Greetings to all,

I am wondering if anyone has any experience at solar viewing/imaging
with the Fringer Killer and Red 610 combo?

I have the Fringe Killer already and am considering either the Red 610
or the Solar Continuum filter for solar work.

I have made with the Baader solar film a filter for my 127ED and
noticed more surface detail when I use a Celestron red filter. So this
makes me wonder if the Baader Red would be a better choice over the
Continuum.

Any experience, images or thoughts would be greatly appreciated.

Best regards,
Brian Davis

Thank you Mike, for setting me straight and directing me to the rest of the
story...
I always refer people to your nexstarsite 'cause, you're the best!

Cheers,
Wyatt.



From: Michael Swanson
Sent: Saturday, September 27, 2008 8:02 PM
To: Baader-Planetarium@yahoogroups.com
Subject: RE: [Baader-Planetarium] Re: Semi-Apo Filter


Hi Wyatt,

I have not reviewed the Semi-APO filter. The Semi-APO and Fringe-Killer are
two different filters. Basically the Semi-APO is the Fringe-Killer coupled
with the Moon and Skyglow filter. More details in a post I made back in
February:
http://tech.groups.yahoo.com/group/Baader-Planetarium/message/12

That said, all these filters will help to correct is chromatic aberration.
Some of the larger short-tube refractors have other aberrations which these
filters will not help with.

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

-----Original Message-----
From: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of Wyatt
Sent: Sunday, September 28, 2008 2:25 AM
To: Baader-Planetarium@yahoogroups.com
Subject: [Baader-Planetarium] Re: Semi-Apo Filter

Hi Mike,

I'm trying to find your review of the Semi-APO filter, but only see
the Baader Fringe-Killer Filter review.

Are they one in the same and you have christened the Baader Fringe-
Killer Filter as a Semi-APO filter?

BTW, I have a SW 120 MM short tube refractor and based on your review
of the Baader Fringe-Killer, bought the filter. It is indeed a fringe
killer, but Semi_APO?

Cheers,
Wyatt.

--- In Baader-Planetarium@yahoogroups.com, "Michael Swanson"
<swanson.michael@...> wrote:
>
> Hi Joe,
>
> You may want to read my review of the Fringe-Killer (Equipment
Reviews
> section of my web site). The Semi-APO is essentially a combination
of the
> Fringe-Killer coatings plus the Moon and Skyglow coatings. Most of
the
> false color suppression is provided by the Fringe-Killer coatings
while the
> Moon and Skyglow coatings return a more neutral color balance.
Thus, the
> improvement in resolution and detail is the same as I report in my
review
> with the added benefit of a more natural color.
>
> Best regards,
> Mike Swanson
> Author of "The NexStar User's Guide"
> Author of "NexStar Observer List"
> http://www.NexStarSite.com
>
> -----Original Message-----
> From: Baader-Planetarium@yahoogroups.com
> [mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of jrneuberger
> Sent: Friday, April 04, 2008 8:05 PM
> To: Baader-Planetarium@yahoogroups.com
> Subject: [Baader-Planetarium] Re: Semi-Apo Filter
>
> Doug,
> I too have the C6R and am considering different filters for this
> purpose. So please let us know what you think about this Semi APO
> filter.
> Regards,
> Joe Neuberger
> Wilmington, Delaware
>
> --- In Baader-Planetarium@yahoogroups.com, "doug" <baileydoug76@>
> wrote:
> >
> > I found out about this filter, so I wound up ordering it in the
2"
> size
> > instead of the Fringe Killer for my C6R. Hope to recieve it soon.
> > Doug
> >
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>

------------------------------------

Yahoo! Groups Links





[Non-text portions of this message have been removed]

Hi Wyatt,

I have not reviewed the Semi-APO filter.  The Semi-APO and Fringe-Killer are
two different filters.  Basically the Semi-APO is the Fringe-Killer coupled
with the Moon and Skyglow filter.  More details in a post I made back in
February:
http://tech.groups.yahoo.com/group/Baader-Planetarium/message/12

That said, all these filters will help to correct is chromatic aberration.
Some of the larger short-tube refractors have other aberrations which these
filters will not help with.

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

-----Original Message-----
From: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of Wyatt
Sent: Sunday, September 28, 2008 2:25 AM
To: Baader-Planetarium@yahoogroups.com
Subject: [Baader-Planetarium] Re: Semi-Apo Filter

Hi Mike,

I'm trying to find your review of the Semi-APO filter, but only see
the Baader Fringe-Killer Filter review.

Are they one in the same and you have christened the Baader Fringe-
Killer Filter as a Semi-APO filter?

BTW, I have a SW 120 MM short tube refractor and based on your review
of the Baader Fringe-Killer, bought the filter. It is indeed a fringe
killer, but Semi_APO?

Cheers,
Wyatt.



--- In Baader-Planetarium@yahoogroups.com, "Michael Swanson"
<swanson.michael@...> wrote:
>
> Hi Joe,
>
> You may want to read my review of the Fringe-Killer (Equipment
Reviews
> section of my web site).  The Semi-APO is essentially a combination
of the
> Fringe-Killer coatings plus the Moon and Skyglow coatings.  Most of
the
> false color suppression is provided by the Fringe-Killer coatings
while the
> Moon and Skyglow coatings return a more neutral color balance.
Thus, the
> improvement in resolution and detail is the same as I report in my
review
> with the added benefit of a more natural color.
>
> Best regards,
> Mike Swanson
> Author of "The NexStar User's Guide"
> Author of "NexStar Observer List"
> http://www.NexStarSite.com
>
> -----Original Message-----
> From: Baader-Planetarium@yahoogroups.com
> [mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of jrneuberger
> Sent: Friday, April 04, 2008 8:05 PM
> To: Baader-Planetarium@yahoogroups.com
> Subject: [Baader-Planetarium] Re: Semi-Apo Filter
>
> Doug,
> I too have the C6R and am considering different filters for this
> purpose.   So please let us know what you think about this Semi APO
> filter.
> Regards,
> Joe Neuberger
> Wilmington, Delaware
>
> --- In Baader-Planetarium@yahoogroups.com, "doug" <baileydoug76@>
> wrote:
> >
> > I found out about this filter, so I wound up ordering it in the
2"
> size
> > instead of the Fringe Killer for my C6R. Hope to recieve it soon.
> > Doug
> >
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>



------------------------------------

Yahoo! Groups Links

Hi Mike,

I'm trying to find your review of the Semi-APO filter, but only see
the Baader Fringe-Killer Filter review.

Are they one in the same and you have christened the Baader Fringe-
Killer Filter as a Semi-APO filter?

BTW, I have a SW 120 MM short tube refractor and based on your review
of the Baader Fringe-Killer, bought the filter. It is indeed a fringe
killer, but Semi_APO?

Cheers,
Wyatt.



--- In Baader-Planetarium@yahoogroups.com, "Michael Swanson"
<swanson.michael@...> wrote:
>
> Hi Joe,
>
> You may want to read my review of the Fringe-Killer (Equipment
Reviews
> section of my web site).  The Semi-APO is essentially a combination
of the
> Fringe-Killer coatings plus the Moon and Skyglow coatings.  Most of
the
> false color suppression is provided by the Fringe-Killer coatings
while the
> Moon and Skyglow coatings return a more neutral color balance.
Thus, the
> improvement in resolution and detail is the same as I report in my
review
> with the added benefit of a more natural color.
>
> Best regards,
> Mike Swanson
> Author of "The NexStar User's Guide"
> Author of "NexStar Observer List"
> http://www.NexStarSite.com
>
> -----Original Message-----
> From: Baader-Planetarium@yahoogroups.com
> [mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of jrneuberger
> Sent: Friday, April 04, 2008 8:05 PM
> To: Baader-Planetarium@yahoogroups.com
> Subject: [Baader-Planetarium] Re: Semi-Apo Filter
>
> Doug,
> I too have the C6R and am considering different filters for this
> purpose.   So please let us know what you think about this Semi APO
> filter.
> Regards,
> Joe Neuberger
> Wilmington, Delaware
>
> --- In Baader-Planetarium@yahoogroups.com, "doug" <baileydoug76@>
> wrote:
> >
> > I found out about this filter, so I wound up ordering it in the
2"
> size
> > instead of the Fringe Killer for my C6R. Hope to recieve it soon.
> > Doug
> >
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>

Hi Mike

Thanks for your suggestions. I still haven't had any luck with the
Baader filters. I have Hutech, Lumicon and DGM filters and these all
screw on and off easily. Maybe I just got unlucky twice with the
Baaders but I won't be buying any more.

Regards
Gavin

--- In Baader-Planetarium@yahoogroups.com, "Michael Swanson"
<swanson.michael@...> wrote:
>
> Hi Gaven,
>
> Unfortunately threads on 2" eyepieces and diagonals are not
completely
> standardized - there is significant variation from one manufacturer
to the
> next.  Add to that the fact that most manufacturers paint the
inside of the
> barrel, including the threads.  Baader's filters are precise, but
in order
> to keep them from unscrewing from loose fitting eyepieces and
diagonals,
> they can be a little tight in some equipment.  Consider how upset a
customer
> would be if a filter fell down inside an SCT.
>
> What I've found is that I need to work it back and forth (as you've
tried)
> and on all of my equipment that has cleared out the paint from the
eyepieces
> and diagonals so that the filter goes on much easier.
>
> Also, Baader's filter cells are thin-walled to ensure the maximum
clear
> aperture, even when stacking filters.  So, hold and turn the filter
gently
> with your thumb and first three fingers.  Distribute your thumb and
fingers
> evenly around the rim of the filter at 90 degree separation from
each other.
> This will help reduce any tendency of the filter cell from
deforming due to
> excessive pressure.
>
> One last trick that I've heard used, though I haven't needed to try
it, is
> to use a very, very small amount of temperature stable grease on the
> threads.
>
> Hope that helps.
>
> Best regards,
> Mike Swanson
> Author of "The NexStar User's Guide"
> Author of "NexStar Observer List"
> http://www.NexStarSite.com
>
> -----Original Message-----
> From: Baader-Planetarium@yahoogroups.com
> [mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of Gavin Bray
> Sent: Saturday, September 13, 2008 1:02 PM
> To: Baader-Planetarium@yahoogroups.com
> Subject: [Baader-Planetarium] Thread issues with Baader-Planetarium
filters
>
> Hello
>
> I know this group is new but hopefully there's someone with Baader
> filter experience who can help me.
>
> I bought a 2" Moon and SkyGlow filter and a 2" UV-IR cut filter and
I
> find it difficult to thread these filters onto various pieces of
> equipment including TV Naglers, Optec focal reducers and AP star
> diagonals. With persistence and a lot of care not to cross thread I
> can do this during the day but at night I find it too difficult. I
> have non-Baader filters that screw on easily so I think it's an
issue
> with the Baader filters.
>
> I've tried turning the filters back and forth for several minutes
> once screwed but so far this has not helped.
>
> Has anyone had any issues with these filters or any suggestions for
> fixing the problem?
>
> At the moment I'm quite disappointed with these filters.
>
> Thanks
> Gavin
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>

Hi Gaven,

Unfortunately threads on 2" eyepieces and diagonals are not completely
standardized - there is significant variation from one manufacturer to the
next.  Add to that the fact that most manufacturers paint the inside of the
barrel, including the threads.  Baader's filters are precise, but in order
to keep them from unscrewing from loose fitting eyepieces and diagonals,
they can be a little tight in some equipment.  Consider how upset a customer
would be if a filter fell down inside an SCT.

What I've found is that I need to work it back and forth (as you've tried)
and on all of my equipment that has cleared out the paint from the eyepieces
and diagonals so that the filter goes on much easier.

Also, Baader's filter cells are thin-walled to ensure the maximum clear
aperture, even when stacking filters.  So, hold and turn the filter gently
with your thumb and first three fingers.  Distribute your thumb and fingers
evenly around the rim of the filter at 90 degree separation from each other.
This will help reduce any tendency of the filter cell from deforming due to
excessive pressure.

One last trick that I've heard used, though I haven't needed to try it, is
to use a very, very small amount of temperature stable grease on the
threads.

Hope that helps.

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

-----Original Message-----
From: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of Gavin Bray
Sent: Saturday, September 13, 2008 1:02 PM
To: Baader-Planetarium@yahoogroups.com
Subject: [Baader-Planetarium] Thread issues with Baader-Planetarium filters

Hello

I know this group is new but hopefully there's someone with Baader
filter experience who can help me.

I bought a 2" Moon and SkyGlow filter and a 2" UV-IR cut filter and I
find it difficult to thread these filters onto various pieces of
equipment including TV Naglers, Optec focal reducers and AP star
diagonals. With persistence and a lot of care not to cross thread I
can do this during the day but at night I find it too difficult. I
have non-Baader filters that screw on easily so I think it's an issue
with the Baader filters.

I've tried turning the filters back and forth for several minutes
once screwed but so far this has not helped.

Has anyone had any issues with these filters or any suggestions for
fixing the problem?

At the moment I'm quite disappointed with these filters.

Thanks
Gavin


------------------------------------

Yahoo! Groups Links

Hello

I know this group is new but hopefully there's someone with Baader
filter experience who can help me.

I bought a 2" Moon and SkyGlow filter and a 2" UV-IR cut filter and I
find it difficult to thread these filters onto various pieces of
equipment including TV Naglers, Optec focal reducers and AP star
diagonals. With persistence and a lot of care not to cross thread I
can do this during the day but at night I find it too difficult. I
have non-Baader filters that screw on easily so I think it's an issue
with the Baader filters.

I've tried turning the filters back and forth for several minutes
once screwed but so far this has not helped.

Has anyone had any issues with these filters or any suggestions for
fixing the problem?

At the moment I'm quite disappointed with these filters.

Thanks
Gavin

It certainly! I have tested the filter and adding red 610 and FK you get a
filter HA da 50-60nm.

On a bubble nebula give me similar results to UHC-s of Baader but 'more' large
in the spectrum.

Sorry, I speak little English and use a translator Google.

We send two photos explanatory.

Bye

Marco Bensi
Osservo e riprendo con:
C.P.GOERZ 1270/110 - Refrattor of 1913
Meade LXD75 Newton 6" - Autostar 497
Celestron Mak 2000/130 modificato
MTO Maksutov 1100/110
Meade ETX 90AT-UHTC + 497+EC
Meade ETX 70AT + 494
Binocolo 20x80 KonusVue Giant
Telecamere Meade LPI,DSI e DSI2pro
Oculari Baader Hyperion 5-17-24mm
Filtri Baader UHC-s,OIII,Semi-APO,Fringe Killer

http://groups.yahoo.com/group/etx_italy/
Le mie immagini sono su:
http://quasar.teoth.it/gallery/thumbnails.php?album=31



> Hi Marco,
>
> Welcome to the group!
>
> I'm not much of an imager so I haven't had an opportunity to try the Fringe
> Killer/Red filter combination.  Have you?
>
> Best regards,
> Mike Swanson
> Author of "The NexStar User's Guide"
> Author of "NexStar Observer List"
> http://www.NexStarSite.com
>
> -----Original Message-----
> From: Baader-Planetarium@yahoogroups.com
> [mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of Marco Bensi
> Sent: Thursday, September 04, 2008 9:32 PM
> To: Baader-Planetarium@yahoogroups.com
> Subject: [Baader-Planetarium] Hello to all friends of the Baader filters!
>
> Hello to all friends of the Baader filters!
>
> Use form long time filters Baader SemiAPO, Fringe Killer, LRGB, O3,
> UHC-s and I am happy how they work.
>
> Have you ever tried the Fringe Killer along with Red filter to make a
> filter HA?
>
> Hello and greetings
>
> Marco Bensi
> Italy
>
> Osservo e riprendo con:
> C.P.GOERZ 1270/110 - Rifrattore
> Meade LXD75 Newton 6" - Autostar 497
> Celestron Mak 2000/130 modificato
> MTO Maksutov 1100/110
> Meade ETX 90AT-UHTC + 497+EC
> Meade ETX 70AT + 494
> Binocolo 20x80 KonusVue Giant
> Telecamere Meade LPI,DSI e DSI2pro
> Oculari Baader Hyperion 5-17-24mm
> Filtri Baader UHC-s,OIII,Semi-APO,Fringe Killer
>
> http://groups.yahoo.com/group/etx_italy/
> Le mie immagini sono su:
> http://quasar.teoth.it/gallery/thumbnails.php?album=31
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>
>
>
>




[Non-text portions of this message have been removed]

Hi Marco,

Welcome to the group!

I'm not much of an imager so I haven't had an opportunity to try the Fringe
Killer/Red filter combination.  Have you?

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

-----Original Message-----
From: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of Marco Bensi
Sent: Thursday, September 04, 2008 9:32 PM
To: Baader-Planetarium@yahoogroups.com
Subject: [Baader-Planetarium] Hello to all friends of the Baader filters!

Hello to all friends of the Baader filters!

Use form long time filters Baader SemiAPO, Fringe Killer, LRGB, O3,
UHC-s and I am happy how they work.

Have you ever tried the Fringe Killer along with Red filter to make a
filter HA?

Hello and greetings

Marco Bensi
Italy

Osservo e riprendo con:
C.P.GOERZ 1270/110 - Rifrattore
Meade LXD75 Newton 6" - Autostar 497
Celestron Mak 2000/130 modificato
MTO Maksutov 1100/110
Meade ETX 90AT-UHTC + 497+EC
Meade ETX 70AT + 494
Binocolo 20x80 KonusVue Giant
Telecamere Meade LPI,DSI e DSI2pro
Oculari Baader Hyperion 5-17-24mm
Filtri Baader UHC-s,OIII,Semi-APO,Fringe Killer

http://groups.yahoo.com/group/etx_italy/
Le mie immagini sono su:
http://quasar.teoth.it/gallery/thumbnails.php?album=31


------------------------------------

Yahoo! Groups Links

Hello to all friends of the Baader filters!

Use form long time filters Baader SemiAPO, Fringe Killer, LRGB, O3,
UHC-s and I am happy how they work.

Have you ever tried the Fringe Killer along with Red filter to make a
filter HA?

Hello and greetings

Marco Bensi
Italy

Osservo e riprendo con:
C.P.GOERZ 1270/110 - Rifrattore
Meade LXD75 Newton 6" - Autostar 497
Celestron Mak 2000/130 modificato
MTO Maksutov 1100/110
Meade ETX 90AT-UHTC + 497+EC
Meade ETX 70AT + 494
Binocolo 20x80 KonusVue Giant
Telecamere Meade LPI,DSI e DSI2pro
Oculari Baader Hyperion 5-17-24mm
Filtri Baader UHC-s,OIII,Semi-APO,Fringe Killer

http://groups.yahoo.com/group/etx_italy/
Le mie immagini sono su:
http://quasar.teoth.it/gallery/thumbnails.php?album=31

New member here but already know some of you posting. I have a few
Baader Planetarium pieces of equipment and feel it is some of the
highest quality 'astro gear' on the market today. The fit and finish
are top notch AND the modular design allows the mixing and matching of
several parts. This flexibility is refreshing and most useful.

'Nuff said, good to be here!

Rick

Hi Tim,

I don't think that would be safe at all.  As you indicate, IR, and also UV,
would not be blocked by an ND filter.

Explain to the bean-counters that a potential law suit will cost
immeasurably more than the small increase in price for the correct filter.

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

-----Original Message-----
From: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of Tim Cole
Sent: Wednesday, July 16, 2008 10:01 AM
To: Baader-Planetarium@yahoogroups.com
Subject: [Baader-Planetarium] Photographic vs. Visual Solar Film

Greetings all,
Can photographic density solar film (Density 3.8) be made safe for
visual observation with the addition of a neutral density filter? It's
one thing to select a ND filter to increase the *calculated* optical
density to 5.0, but would that reduce the IR to safe levels?

(Frankly, I'd sooner just buy the visual density solar film. Alas, I'm
hearing bean-counter nonsense. Go figure....)

Cheers,
Tim Cole
Ottawa ON


------------------------------------

Yahoo! Groups Links

Greetings all,
Can photographic density solar film (Density 3.8) be made safe for
visual observation with the addition of a neutral density filter? It's
one thing to select a ND filter to increase the *calculated* optical
density to 5.0, but would that reduce the IR to safe levels?

(Frankly, I'd sooner just buy the visual density solar film. Alas, I'm
hearing bean-counter nonsense. Go figure....)

Cheers,
Tim Cole
Ottawa ON

Hi Michael,

I just discovered the 2" Semi-APO is now available in the US through
Alpine - and had come to just the same conclusions you have! Thanks
for the help.

-drl

--- In Baader-Planetarium@yahoogroups.com, "Michael Swanson"
<swanson.michael@...> wrote:
>
> Hi,
>
> I don't think you will see too dramatic of an improvement with the
> Moon/Skyglow filter when used on the 10" reflector - in my NexStar
11 about
> the only time I use it is when viewing planets and that is because it
> improves the contrast of some surface features.  The Contrast
Booster is a
> more aggressive version of the Moon/Skyglow, basically adding in
filtering
> of violet/blue light.  That more or less limits it to use in achromatic
> refractors.
>
> The Semi-APO filter is basically a combination of the Fringe Killer
and the
> Moon/Skyglow.  The advantage of adding those two into a single
filter is to
> return a more natural color after the Fringe Killer cuts out so much
of the
> violet/blue spectrum.  It would be a very good choice for permanent
use in
> your 5", but it might cut down too much light for your 3".
>
> So, maybe the best choice would be a Semi-APO for the 5" and then a
> Moon/Skyglow for improved contrast in the 3" and occasional use in
the 10".
>
> There certainly are a lot of ways to go about this and any given filter
> would be useful at times.
>
> Best regards,
> Mike Swanson
> Author of "The NexStar User's Guide"
> Author of "NexStar Observer List"
> http://www.NexStarSite.com
>
> -----Original Message-----
> From: Baader-Planetarium@yahoogroups.com
> [mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of DRLunsford
> Sent: Saturday, June 07, 2008 1:30 AM
> To: Baader-Planetarium@yahoogroups.com
> Subject: [Baader-Planetarium] Advice
>
> Hello,
>
> I own a 5" f/9.3 achromat w/2" diagonal, a 3" f/10 terrestrial
> refractor, and a 10" reflector. I use both 1.25" and 2" eyepieces in
> both. I am buying some combination of the FK, the CB, and the MSF in
> one or the other form factor. What do you think is the optimum
> combination (don't say buy all six :)? I was thinking ..
>
> - 2" FK permanently attached to the diagonal of the 5"
> - 1.25" and 2" MSF for use in both the 5" and 10"
>
> or
>
> - 2" FK permanently attached to the diagonal of the 5"
> - 2" MSF for use with the 10" at low power when skyglow is an issue,
> also in combination with the 5" FK for natural color
> - 1.25" CB for use in all 1.25" eyepieces and for violet correction in
> the 3" scope
>
> There are so many combinations my head hurts. What do you think?
>
> -drl
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>

Hi,

I don't think you will see too dramatic of an improvement with the
Moon/Skyglow filter when used on the 10" reflector - in my NexStar 11 about
the only time I use it is when viewing planets and that is because it
improves the contrast of some surface features.  The Contrast Booster is a
more aggressive version of the Moon/Skyglow, basically adding in filtering
of violet/blue light.  That more or less limits it to use in achromatic
refractors.

The Semi-APO filter is basically a combination of the Fringe Killer and the
Moon/Skyglow.  The advantage of adding those two into a single filter is to
return a more natural color after the Fringe Killer cuts out so much of the
violet/blue spectrum.  It would be a very good choice for permanent use in
your 5", but it might cut down too much light for your 3".

So, maybe the best choice would be a Semi-APO for the 5" and then a
Moon/Skyglow for improved contrast in the 3" and occasional use in the 10".

There certainly are a lot of ways to go about this and any given filter
would be useful at times.

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

-----Original Message-----
From: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of DRLunsford
Sent: Saturday, June 07, 2008 1:30 AM
To: Baader-Planetarium@yahoogroups.com
Subject: [Baader-Planetarium] Advice

Hello,

I own a 5" f/9.3 achromat w/2" diagonal, a 3" f/10 terrestrial
refractor, and a 10" reflector. I use both 1.25" and 2" eyepieces in
both. I am buying some combination of the FK, the CB, and the MSF in
one or the other form factor. What do you think is the optimum
combination (don't say buy all six :)? I was thinking ..

- 2" FK permanently attached to the diagonal of the 5"
- 1.25" and 2" MSF for use in both the 5" and 10"

or

- 2" FK permanently attached to the diagonal of the 5"
- 2" MSF for use with the 10" at low power when skyglow is an issue,
also in combination with the 5" FK for natural color
- 1.25" CB for use in all 1.25" eyepieces and for violet correction in
the 3" scope

There are so many combinations my head hurts. What do you think?

-drl





------------------------------------

Yahoo! Groups Links

Hello,

I own a 5" f/9.3 achromat w/2" diagonal, a 3" f/10 terrestrial
refractor, and a 10" reflector. I use both 1.25" and 2" eyepieces in
both. I am buying some combination of the FK, the CB, and the MSF in
one or the other form factor. What do you think is the optimum
combination (don't say buy all six :)? I was thinking ..

- 2" FK permanently attached to the diagonal of the 5"
- 1.25" and 2" MSF for use in both the 5" and 10"

or

- 2" FK permanently attached to the diagonal of the 5"
- 2" MSF for use with the 10" at low power when skyglow is an issue,
also in combination with the 5" FK for natural color
- 1.25" CB for use in all 1.25" eyepieces and for violet correction in
the 3" scope

There are so many combinations my head hurts. What do you think?

-drl

Thank Mike,

   i solved the issue using the baader crayford that has the possibility to
use insert a 2" filter

Regards

Fabio
   -----Messaggio originale-----
   Da: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com]Per conto di Michael Swanson
   Inviato: mercoledi 21 maggio 2008 8.26
   A: Baader-Planetarium@yahoogroups.com
   Oggetto: RE: [Baader-Planetarium] Help to fit ALAN GEE II


   Hi Fabio,

   In the Astro Downloads section of his web site (http://www.dd1us.de/),
   Matthias Bopp's has an article on several adapters in use with an Alan Gee
   II:
   http://www.dd1us.de/Downloads/Alan%20Gee%202%20adapted%20to%20N11GPS%201_0
.p
   df

   Hopefully that helps!

   Best regards,
   Mike Swanson
   Author of "The NexStar User's Guide"
   Author of "NexStar Observer List"
   http://www.NexStarSite.com

   -----Original Message-----
   From: Baader-Planetarium@yahoogroups.com
   [mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of Fabio Acquarone
   Sent: Tuesday, April 29, 2008 6:00 AM
   To: Baader-Planetarium@yahoogroups.com
   Subject: [Baader-Planetarium] Help to fit ALAN GEE II

   Hi to all,

   I need to buy adapters for a ALAN EGE II.
   Currently I have two adapters:
   T2-21 for inclusion in a SC (C9.25) and the T-25A as an extension.

   Using it I can connect a CCD camera (SXVH-H9C) directly to the
   ALAN GEE II

   Now my needs are as follows:

   -- Be able to use 2" filters between the CCD and the ALAN GEE II
   -- Use a crayford directly connected to the C9.25, and fit the camera
   with the 2" filter and the ALAN GEE

   what I need?

   Sincerely

   Fabio Acquarone
   http://www.fabioh2o.it

   ------------------------------------

   Yahoo! Groups Links






[Non-text portions of this message have been removed]

Hi Fabio,

In the Astro Downloads section of his web site (http://www.dd1us.de/),
Matthias Bopp's has an article on several adapters in use with an Alan Gee
II:
http://www.dd1us.de/Downloads/Alan%20Gee%202%20adapted%20to%20N11GPS%201_0.p
df

Hopefully that helps!

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

-----Original Message-----
From: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of Fabio Acquarone
Sent: Tuesday, April 29, 2008 6:00 AM
To: Baader-Planetarium@yahoogroups.com
Subject: [Baader-Planetarium] Help to fit ALAN GEE II

Hi to all,

    I need to buy adapters for a ALAN EGE II.
    Currently I have two adapters:
    T2-21 for inclusion in a SC (C9.25) and the T-25A as an extension.

    Using it I can connect a CCD camera (SXVH-H9C) directly to the
ALAN GEE II

    Now my needs are as follows:

-- Be able to use 2" filters between the CCD and the ALAN GEE II
-- Use a crayford directly connected to the C9.25, and fit the camera
with the 2" filter and the ALAN GEE

    what I need?

   Sincerely

Fabio Acquarone
http://www.fabioh2o.it


------------------------------------

Yahoo! Groups Links

Hi Larry,

Read message 12 here in the Group:
http://tech.groups.yahoo.com/group/Baader-Planetarium/message/12

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

--- In Baader-Planetarium@yahoogroups.com, "mineralman55"
<Larryo55@...> wrote:
>
> I'm wondering what are the major differences between these two
filters.
> What is the preferred application of each? I've got the 2" M&SG
filter,
> and it does a fair job on my light polluted suburban sky with my SV
> 80mmED.
>
> Any suggestions here particularly for planetary viewing?
>
> Larry
>

I'm wondering what are the major differences between these two filters.
What is the preferred application of each? I've got the 2" M&SG filter,
and it does a fair job on my light polluted suburban sky with my SV
80mmED.

Any suggestions here particularly for planetary viewing?

Larry

Hi Fabio,

This will require some research but I'll see what I can come up with.

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

-----Original Message-----
From: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of Fabio Acquarone
Sent: Tuesday, April 29, 2008 6:00 AM
To: Baader-Planetarium@yahoogroups.com
Subject: [Baader-Planetarium] Help to fit ALAN GEE II

Hi to all,

    I need to buy adapters for a ALAN EGE II.
    Currently I have two adapters:
    T2-21 for inclusion in a SC (C9.25) and the T-25A as an extension.

    Using it I can connect a CCD camera (SXVH-H9C) directly to the
ALAN GEE II

    Now my needs are as follows:

-- Be able to use 2" filters between the CCD and the ALAN GEE II
-- Use a crayford directly connected to the C9.25, and fit the camera
with the 2" filter and the ALAN GEE

    what I need?

   Sincerely

Fabio Acquarone
http://www.fabioh2o.it


------------------------------------

Yahoo! Groups Links

Hi to all,

    I need to buy adapters for a ALAN EGE II.
    Currently I have two adapters:
    T2-21 for inclusion in a SC (C9.25) and the T-25A as an extension.

    Using it I can connect a CCD camera (SXVH-H9C) directly to the
ALAN GEE II

    Now my needs are as follows:

-- Be able to use 2" filters between the CCD and the ALAN GEE II
-- Use a crayford directly connected to the C9.25, and fit the camera
with the 2" filter and the ALAN GEE

    what I need?

   Sincerely

Fabio Acquarone
http://www.fabioh2o.it

Hi,

There wouldn't be much benefit in purchasing a 2" diagonal if you don't have
any 2" eyepieces.  A couple of things to consider are that 2" diagonals are
generally higher optical quality than 1.25" models and that almost all 2"
diagonals have a compression ring that holds the eyepieces better than just
set screws.

Regarding dew straps, the eye lens is rather large so if you have a
significant dew problem in your area you will need one.  The diameter of the
eyepiece is a bit less than 60mm.

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

-----Original Message-----
From: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of rlderderian
Sent: Wednesday, April 09, 2008 9:14 AM
To: Baader-Planetarium@yahoogroups.com
Subject: [Baader-Planetarium] Re: 24mm

Thanks for that answer.  Now with that in mind, if I never buy a 2"
EP, is there any reason to get a 2" diagonal?



--- In Baader-Planetarium@yahoogroups.com, "Mike Swanson"
<swanson.michael@...> wrote:
>
> Hello,
>
> The view is exactly the same whether you are using the eyepieces in
a
> 1.25" diagonal or a 2" diagonal.  Regarding using them in a 2"
> diagonal, the lowest black section of the eyepiece is the 2" barrel
> so you slide the eyepiece in as is.  For a picture of how that
looks,
> see the Files section of this Group and view the various manuals
and
> brochures posted there.  Note the description urging care when
using
> these eyepieces in a low profile 2" diagonal - it is possible for
the
> 1.25" barrel of the eyepiece to bang into the mirror in some
cases.
> If you find this to be an issue with a given 2" diagonal, Baader
> created 2" stop rings to prevent this problem.
>
> One additional note - the 13mm has the option of removing the 1.25"
> barrel from the bottom of the eyepiece which takes the first lens
> group with it.  In that instance, the eyepiece can only be used in
a
> 2" diagonal and the focal length changes to about 23mm.  In this
> configuration, the view at the edge of the field deteriorates and
> since you already have the 24mm, you probably won't want to use the
> 13mm in this fashion.
>
> Best regards,
> Mike Swanson
> Author of "The NexStar User's Guide"
> Author of "NexStar Observer List"
> http://www.NexStarSite.com
>
>
> --- In Baader-Planetarium@yahoogroups.com, "rlderderian"
> <rlderderian@> wrote:
> >
> > I have a CPC 1100.  I just received the 13mm and 24mm Hyperions.
> In
> > the future I am going to get a 2 diagonal.  How do you convert
> these
> > EP's to 2"?  Do you need additional parts?  Will these EP's give
> better
> > views with a 1.25" diagonal or 2", or about the smae?
> >
>



------------------------------------

Yahoo! Groups Links

What size dew strap do I need for these EP's, the 1.25"  or 2"?  (13mm
or 24mm).

Do you find you need dew straps for EP's?

Thanks for that answer.  Now with that in mind, if I never buy a 2"
EP, is there any reason to get a 2" diagonal?



--- In Baader-Planetarium@yahoogroups.com, "Mike Swanson"
<swanson.michael@...> wrote:
>
> Hello,
>
> The view is exactly the same whether you are using the eyepieces in
a
> 1.25" diagonal or a 2" diagonal.  Regarding using them in a 2"
> diagonal, the lowest black section of the eyepiece is the 2" barrel
> so you slide the eyepiece in as is.  For a picture of how that
looks,
> see the Files section of this Group and view the various manuals
and
> brochures posted there.  Note the description urging care when
using
> these eyepieces in a low profile 2" diagonal - it is possible for
the
> 1.25" barrel of the eyepiece to bang into the mirror in some
cases.
> If you find this to be an issue with a given 2" diagonal, Baader
> created 2" stop rings to prevent this problem.
>
> One additional note - the 13mm has the option of removing the 1.25"
> barrel from the bottom of the eyepiece which takes the first lens
> group with it.  In that instance, the eyepiece can only be used in
a
> 2" diagonal and the focal length changes to about 23mm.  In this
> configuration, the view at the edge of the field deteriorates and
> since you already have the 24mm, you probably won't want to use the
> 13mm in this fashion.
>
> Best regards,
> Mike Swanson
> Author of "The NexStar User's Guide"
> Author of "NexStar Observer List"
> http://www.NexStarSite.com
>
>
> --- In Baader-Planetarium@yahoogroups.com, "rlderderian"
> <rlderderian@> wrote:
> >
> > I have a CPC 1100.  I just received the 13mm and 24mm Hyperions.
> In
> > the future I am going to get a 2 diagonal.  How do you convert
> these
> > EP's to 2"?  Do you need additional parts?  Will these EP's give
> better
> > views with a 1.25" diagonal or 2", or about the smae?
> >
>

Hello,

The view is exactly the same whether you are using the eyepieces in a
1.25" diagonal or a 2" diagonal.  Regarding using them in a 2"
diagonal, the lowest black section of the eyepiece is the 2" barrel
so you slide the eyepiece in as is.  For a picture of how that looks,
see the Files section of this Group and view the various manuals and
brochures posted there.  Note the description urging care when using
these eyepieces in a low profile 2" diagonal - it is possible for the
1.25" barrel of the eyepiece to bang into the mirror in some cases.
If you find this to be an issue with a given 2" diagonal, Baader
created 2" stop rings to prevent this problem.

One additional note - the 13mm has the option of removing the 1.25"
barrel from the bottom of the eyepiece which takes the first lens
group with it.  In that instance, the eyepiece can only be used in a
2" diagonal and the focal length changes to about 23mm.  In this
configuration, the view at the edge of the field deteriorates and
since you already have the 24mm, you probably won't want to use the
13mm in this fashion.

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com


--- In Baader-Planetarium@yahoogroups.com, "rlderderian"
<rlderderian@...> wrote:
>
> I have a CPC 1100.  I just received the 13mm and 24mm Hyperions.
In
> the future I am going to get a 2 diagonal.  How do you convert
these
> EP's to 2"?  Do you need additional parts?  Will these EP's give
better
> views with a 1.25" diagonal or 2", or about the smae?
>

I have a CPC 1100.  I just received the 13mm and 24mm Hyperions.  In
the future I am going to get a 2 diagonal.  How do you convert these
EP's to 2"?  Do you need additional parts?  Will these EP's give better
views with a 1.25" diagonal or 2", or about the smae?

Hi Joe,

You may want to read my review of the Fringe-Killer (Equipment Reviews
section of my web site).  The Semi-APO is essentially a combination of the
Fringe-Killer coatings plus the Moon and Skyglow coatings.  Most of the
false color suppression is provided by the Fringe-Killer coatings while the
Moon and Skyglow coatings return a more neutral color balance.  Thus, the
improvement in resolution and detail is the same as I report in my review
with the added benefit of a more natural color.

Best regards,
Mike Swanson
Author of "The NexStar User's Guide"
Author of "NexStar Observer List"
http://www.NexStarSite.com

-----Original Message-----
From: Baader-Planetarium@yahoogroups.com
[mailto:Baader-Planetarium@yahoogroups.com] On Behalf Of jrneuberger
Sent: Friday, April 04, 2008 8:05 PM
To: Baader-Planetarium@yahoogroups.com
Subject: [Baader-Planetarium] Re: Semi-Apo Filter

Doug,
I too have the C6R and am considering different filters for this
purpose.   So please let us know what you think about this Semi APO
filter.
Regards,
Joe Neuberger
Wilmington, Delaware

--- In Baader-Planetarium@yahoogroups.com, "doug" <baileydoug76@...>
wrote:
>
> I found out about this filter, so I wound up ordering it in the 2"
size
> instead of the Fringe Killer for my C6R. Hope to recieve it soon.
> Doug
>



------------------------------------

Yahoo! Groups Links

I have the 2inch Baader Semi-Apo filter.I use it on my Orion 120mm F/8.3 Achro
Refractor.

   The difference is utterly jaw-dropping when the semi-apo filter is
installed.There is almost zero false color found on any object at any power.
   The clarity in the Lunar surface as well as the banding on Jupiter is
impressive enough to make me think I have another 20mm of aperature on my
telescope.

   If you were to only buy 1 filter,make it the 2inch Semi-Apo Filter.It is worth
twice the selling price.
   In my opinion it is the best filter(not including solar filters)ever to be
produced and sold.
   It is almost Magical in its performance.

   Sincerely,
   Michael Todd Carter

jrneuberger <JRNeuberger@...> wrote:
   Doug,
I too have the C6R and am considering different filters for this
purpose. So please let us know what you think about this Semi APO
filter.
Regards,
Joe Neuberger
Wilmington, Delaware

--- In Baader-Planetarium@yahoogroups.com, "doug"
wrote:
>
> I found out about this filter, so I wound up ordering it in the 2"
size
> instead of the Fringe Killer for my C6R. Hope to recieve it soon.
> Doug
>



------------------------------------

Yahoo! Groups Links






[Non-text portions of this message have been removed]

Doug,
I too have the C6R and am considering different filters for this
purpose.   So please let us know what you think about this Semi APO
filter.
Regards,
Joe Neuberger
Wilmington, Delaware

--- In Baader-Planetarium@yahoogroups.com, "doug" <baileydoug76@...>
wrote:
>
> I found out about this filter, so I wound up ordering it in the 2"
size
> instead of the Fringe Killer for my C6R. Hope to recieve it soon.
> Doug
>