Search the web
Sign In
New User? Sign Up
OAFs · Ottawa Astronomy FriendS
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Real people. Real stories. See how Yahoo! Groups impacts members worldwide.

Best of Y! Groups

   Check them out and nominate your group.
Having problems with message search? Fill out this form to ensure your group is one of the first to be migrated to the new message search system.

Messages

  Messages Help
Advanced
Messages 25128 - 25157 of 25157   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Show Message Summaries   (Group by Topic) Sort by Date ^  
#25128 From: "Bob Olson" <r.olson@...>
Date: Wed Nov 18, 2009 7:35 pm
Subject: Re: Any OAFs going to the WSP in Feb?
r_olson2
Offline Offline
Send Email Send Email
 
Hi Mike,

Ginny and I will be at the WSP.

See you there!

Bob

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

#25129 From: Attilla Danko <danko@...>
Date: Wed Nov 18, 2009 8:21 pm
Subject: Re: Any OAFs going to the WSP in Feb?
attilladanko
Offline Offline
Send Email Send Email
 
Hey Mike.

I sent my check in to wsp. No reply yet.

-ad

On 2009-11-18, MikeZ <mike.zeidler@...> wrote:
>
> Just want to know who I might run into down there. WSP cashed my check so I
> presume that I have a spot.
>
> Looking forward to it.
>
> ziggy
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>


--
attilla danko, danko@..., http://cleardarksky.com/csk

#25130 From: "Douglas B. George" <dg@...>
Date: Wed Nov 18, 2009 10:01 pm
Subject: M42 Narrowband
maximccd
Offline Offline
Send Email Send Email
 
Here's a shot I took this week of good ol' M42, but with a twist.  I used
narrowband filters, and assigned SII to Red, Ha to Green, and OIII to blue. The
stars came out very red, but the details in the nebula are emphasized.

http://www.cyanogen.com/doug/M42-NarrowProc2shrunk.jpg

Equipment:  Ceravolo 300 Astrograph in f/9 mode, Astrodon narrowband filters,
Apogee Alta U9 CCD camera, Paramount ME.  Acquired and processed in MaxIm DL.

Doug

--

Doug George
dgeorge@...

Diffraction Limited
Makers of Cyanogen Imaging Products
http://www.cyanogen.com/

100 Craig Henry Dr., Suite 202
Ottawa, Ontario,
Canada, K2G 5W3

Phone:    (613) 225-2732
Fax:      (613) 225-9688

#25131 From: Attilla Danko <danko@...>
Date: Wed Nov 18, 2009 10:13 pm
Subject: Re: M42 Narrowband
attilladanko
Offline Offline
Send Email Send Email
 
Cool image. Unusual colorbalance. I note you resolved the trapesium. -ad

On Wed, Nov 18, 2009 at 17:01, Douglas B. George <dg@...> wrote:
> Here's a shot I took this week of good ol' M42, but with a twist.  I used
> narrowband filters, and assigned SII to Red, Ha to Green, and OIII to blue.
The
> stars came out very red, but the details in the nebula are emphasized.
>
> http://www.cyanogen.com/doug/M42-NarrowProc2shrunk.jpg
>
> Equipment:  Ceravolo 300 Astrograph in f/9 mode, Astrodon narrowband filters,
> Apogee Alta U9 CCD camera, Paramount ME.  Acquired and processed in MaxIm DL.
>
> Doug
>
> --
>
> Doug George
> dgeorge@...
>
> Diffraction Limited
> Makers of Cyanogen Imaging Products
> http://www.cyanogen.com/
>
> 100 Craig Henry Dr., Suite 202
> Ottawa, Ontario,
> Canada, K2G 5W3
>
> Phone:    (613) 225-2732
> Fax:      (613) 225-9688
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>



--
attilla danko, danko@..., http://cleardarksky.com/csk

#25132 From: "Douglas B. George" <dg@...>
Date: Wed Nov 18, 2009 10:56 pm
Subject: Re: M42 Narrowband
maximccd
Offline Offline
Send Email Send Email
 
Attilla Danko wrote:
> Cool image. Unusual colorbalance. I note you resolved the trapesium. -ad

To be precise, it's not actually color balance... it's really false color.  I've
mapped narrowband images arbitrarily to RGB.

Yes, one of the reasons I decided to try narrowband was so I wouldn't get
enormous blooms, and it would let me resolve the trapesium.

Doug

--

Doug George
dgeorge@...

Diffraction Limited
Makers of Cyanogen Imaging Products
http://www.cyanogen.com/

100 Craig Henry Dr., Suite 202
Ottawa, Ontario,
Canada, K2G 5W3

Phone:    (613) 225-2732
Fax:      (613) 225-9688

#25133 From: Attilla Danko <danko@...>
Date: Wed Nov 18, 2009 11:30 pm
Subject: Re: M42 Narrowband
attilladanko
Offline Offline
Send Email Send Email
 
>> To be precise, it's not actually color balance... it's really false color.

Yes. I mis-spoke. I should have written, unusual choice of colors.
Usual M42 is rendered much more saturated. But then color in
astrophotography seems to be largely a matter of taste and art.  For
false color images, I think one is free to just make colors up.

Still a cool image.


On Wed, Nov 18, 2009 at 17:56, Douglas B. George <dg@...> wrote:
> Attilla Danko wrote:
>> Cool image. Unusual colorbalance. I note you resolved the trapesium. -ad
>
> To be precise, it's not actually color balance... it's really false color.
 I've
> mapped narrowband images arbitrarily to RGB.
>
> Yes, one of the reasons I decided to try narrowband was so I wouldn't get
> enormous blooms, and it would let me resolve the trapesium.
>
> Doug
>
> --
>
> Doug George
> dgeorge@...
>
> Diffraction Limited
> Makers of Cyanogen Imaging Products
> http://www.cyanogen.com/
>
> 100 Craig Henry Dr., Suite 202
> Ottawa, Ontario,
> Canada, K2G 5W3
>
> Phone:    (613) 225-2732
> Fax:      (613) 225-9688
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>



--
attilla danko, danko@..., http://cleardarksky.com/csk

#25134 From: "majikthyze" <andre@...>
Date: Thu Nov 19, 2009 7:22 pm
Subject: Another M42 and a few others
majikthyze
Offline Offline
Send Email Send Email
 
Yet another M42, and a few others taken in the last month or so:

In LRGB:
http://www.flickr.com/photos/26671216@N02/4105758003/in/set-721576051192\
49428/

In narrowband HA only:
http://www.flickr.com/photos/26671216@N02/4105756087/in/set-721576051192\
49428/

NGC 891:
http://www.flickr.com/photos/26671216@N02/4105760383/in/set-721576051192\
49428/

M45:
http://www.flickr.com/photos/26671216@N02/4107088099/in/set-721576051192\
49428/

The above images were taken here in Ottawa (carp) with my 12.5" CDK,
U16M camera, and CGE Pro mount.

Here's one of NGC7331 and Stephan's Quintet from a recent trip to the
Mojave that I took with the 20" CDK, U16M camera, and custom GEM mount:

http://www.flickr.com/photos/26671216@N02/4107537493/in/set-721576051192\
49428/

Cheers,

Andre

#25135 From: "sivarulrasa" <angelasanjeev@...>
Date: Fri Nov 20, 2009 1:45 am
Subject: Re: Another M42 and a few others
sivarulrasa
Offline Offline
Send Email Send Email
 
Wow. Stunning.

Andre - are your mount/OTA the commercially available versions?

Sanjeev

--- In OAFs@yahoogroups.com, "majikthyze" <andre@...> wrote:
>
> Yet another M42, and a few others taken in the last month or so:
>
> In LRGB:
> http://www.flickr.com/photos/26671216@N02/4105758003/in/set-721576051192\
> 49428/
>
> In narrowband HA only:
> http://www.flickr.com/photos/26671216@N02/4105756087/in/set-721576051192\
> 49428/
>
> NGC 891:
> http://www.flickr.com/photos/26671216@N02/4105760383/in/set-721576051192\
> 49428/
>
> M45:
> http://www.flickr.com/photos/26671216@N02/4107088099/in/set-721576051192\
> 49428/
>
> The above images were taken here in Ottawa (carp) with my 12.5" CDK,
> U16M camera, and CGE Pro mount.
>
> Here's one of NGC7331 and Stephan's Quintet from a recent trip to the
> Mojave that I took with the 20" CDK, U16M camera, and custom GEM mount:
>
> http://www.flickr.com/photos/26671216@N02/4107537493/in/set-721576051192\
> 49428/
>
> Cheers,
>
> Andre
>

#25136 From: "majikthyze" <andre@...>
Date: Fri Nov 20, 2009 1:55 am
Subject: Re: Another M42 and a few others
majikthyze
Offline Offline
Send Email Send Email
 
Thanks.  Yup, everything is a standard production model without any special
tweaking.

Andre



--- In OAFs@yahoogroups.com, "sivarulrasa" <angelasanjeev@...> wrote:
>
> Wow. Stunning.
>
> Andre - are your mount/OTA the commercially available versions?
>
> Sanjeev
>
> --- In OAFs@yahoogroups.com, "majikthyze" <andre@> wrote:
> >
> > Yet another M42, and a few others taken in the last month or so:
> >
> > In LRGB:
> > http://www.flickr.com/photos/26671216@N02/4105758003/in/set-721576051192\
> > 49428/
> >
> > In narrowband HA only:
> > http://www.flickr.com/photos/26671216@N02/4105756087/in/set-721576051192\
> > 49428/
> >
> > NGC 891:
> > http://www.flickr.com/photos/26671216@N02/4105760383/in/set-721576051192\
> > 49428/
> >
> > M45:
> > http://www.flickr.com/photos/26671216@N02/4107088099/in/set-721576051192\
> > 49428/
> >
> > The above images were taken here in Ottawa (carp) with my 12.5" CDK,
> > U16M camera, and CGE Pro mount.
> >
> > Here's one of NGC7331 and Stephan's Quintet from a recent trip to the
> > Mojave that I took with the 20" CDK, U16M camera, and custom GEM mount:
> >
> > http://www.flickr.com/photos/26671216@N02/4107537493/in/set-721576051192\
> > 49428/
> >
> > Cheers,
> >
> > Andre
> >
>

#25137 From: "majikthyze" <andre@...>
Date: Fri Nov 20, 2009 4:41 am
Subject: Re: Another M42 and a few others
majikthyze
Offline Offline
Send Email Send Email
 
Here's another one (M77) that I took on the CDK20 while in the Mojave.  There
are a number of issues with the image (including just lack of exposure) but I
really love the "rainbow spotlight" shining down on the galaxy from a mag 4 star
(82-Delta Ceti) just outside the field...
http://www.paquettefamily.ca/astro/20091016_m77_half.jpg

Cheers,

Andre

--- In OAFs@yahoogroups.com, "majikthyze" <andre@...> wrote:
>
> Yet another M42, and a few others taken in the last month or so:
>
> In LRGB:
> http://www.flickr.com/photos/26671216@N02/4105758003/in/set-721576051192\
> 49428/
>
> In narrowband HA only:
> http://www.flickr.com/photos/26671216@N02/4105756087/in/set-721576051192\
> 49428/
>
> NGC 891:
> http://www.flickr.com/photos/26671216@N02/4105760383/in/set-721576051192\
> 49428/
>
> M45:
> http://www.flickr.com/photos/26671216@N02/4107088099/in/set-721576051192\
> 49428/
>
> The above images were taken here in Ottawa (carp) with my 12.5" CDK,
> U16M camera, and CGE Pro mount.
>
> Here's one of NGC7331 and Stephan's Quintet from a recent trip to the
> Mojave that I took with the 20" CDK, U16M camera, and custom GEM mount:
>
> http://www.flickr.com/photos/26671216@N02/4107537493/in/set-721576051192\
> 49428/
>
> Cheers,
>
> Andre
>

#25138 From: "meteorshowersca" <dob14.5@...>
Date: Sun Nov 22, 2009 8:13 pm
Subject: New email address
meteorshowersca
Offline Offline
Send Email Send Email
 
Hello all,

Effective immediately, I am going with a new ISP.  My current email address
dob14.5 at sympatico.ca is no longer going to work.

From now on, you can reach me at pmartin at teksavvy.com

(be sure to replace the "at" with the @)

Clear skies!

- Pierre

#25139 From: bruce <DancesWithWords@...>
Date: Tue Nov 24, 2009 6:57 pm
Subject: Re: Another M42 and a few others
staglite
Offline Offline
Send Email Send Email
 
Wow! Awesome photos.

bruce
Member IEEE, SPIE, IACR
http://faintfuzzies.ca

#25140 From: "RichardOtt" <richard@...>
Date: Tue Nov 24, 2009 10:12 pm
Subject: Correct-to-scale image of solar system
rmgpz
Offline Offline
Send Email Send Email
 
This page:
    http://www.phrenopolis.com/perspective/solarsystem/
has  great image on it.  It shows the Sun and planets at their correct-to-scale
distances from the Sun.

You have to scroll to the right a bit because the solar system is a big place -
at 72 dots per inch, the image is just under one kilometre wide.

#25141 From: Attilla Danko <danko@...>
Date: Tue Nov 24, 2009 10:27 pm
Subject: Re: Correct-to-scale image of solar system
attilladanko
Offline Offline
Send Email Send Email
 
Clever.  I found all the planets except uranus.

#25142 From: Robert Alexander <Tranquillitatis01@...>
Date: Wed Nov 25, 2009 12:01 am
Subject: Re: Correct-to-scale image of solar system
countstar16
Offline Offline
Send Email Send Email
 
At 22:12 +0000 2009/11/24, RichardOtt wrote:
>This page:
><http://www.phrenopolis.com/perspective/solarsystem/>http://www.phrenopolis.com\
/perspective/solarsystem/
>has great image on it. It shows the Sun and planets at their
>correct-to-scale distances from the Sun.

Very cool!  Thanks for posting that.

Rob

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

#25143 From: Stephen J McIntyre <mcintyre_sj@...>
Date: Wed Nov 25, 2009 1:06 am
Subject: Re: Correct-to-scale image of solar system
mcintyre_sj
Offline Offline
Send Email Send Email
 
Maybe the IAU has declared it to be a non-planet.

Attilla Danko wrote:
> Clever.  I found all the planets except uranus.
> ------------------------------------
> Yahoo! Groups Links
>     Individual Email | Traditional
>     http://docs.yahoo.com/info/terms/

#25144 From: "Douglas B. George" <dg@...>
Date: Wed Nov 25, 2009 6:16 pm
Subject: M1
maximccd
Offline Offline
Send Email Send Email
 
I got a big surprise when I put together a narrowband version of M1 - the thing
is psychedelic.

http://www.cyanogen.com/doug/M1-Narrow.jpg

220 minutes SII as Red
230 minutes Ha as Green
215 minutes OIII as Blue

Ceravolo 300 Astrograph / Apogee U9 / Astrodon Filters / Paramount ME.  Acquired
and processed in MaxIm DL.

Doug

--

Doug George
dgeorge@...

Diffraction Limited
Makers of Cyanogen Imaging Products
http://www.cyanogen.com/

100 Craig Henry Dr., Suite 202
Ottawa, Ontario,
Canada, K2G 5W3

Phone:    (613) 225-2732
Fax:      (613) 225-9688

#25145 From: Attilla Danko <danko@...>
Date: Wed Nov 25, 2009 6:29 pm
Subject: Re: M1
attilladanko
Offline Offline
Send Email Send Email
 
Kewl.

I suggest you show it at the Dec rasc meeting.

It would probably look more psychedelic if you cropped it a bit.

-ad

On Wed, Nov 25, 2009 at 13:16, Douglas B. George <dg@...> wrote:
> I got a big surprise when I put together a narrowband version of M1 - the
thing
> is psychedelic.
>
> http://www.cyanogen.com/doug/M1-Narrow.jpg
>
> 220 minutes SII as Red
> 230 minutes Ha as Green
> 215 minutes OIII as Blue
>
> Ceravolo 300 Astrograph / Apogee U9 / Astrodon Filters / Paramount ME.
 Acquired
> and processed in MaxIm DL.
>
> Doug
>
> --
>
> Doug George
> dgeorge@...
>
> Diffraction Limited
> Makers of Cyanogen Imaging Products
> http://www.cyanogen.com/
>
> 100 Craig Henry Dr., Suite 202
> Ottawa, Ontario,
> Canada, K2G 5W3
>
> Phone:    (613) 225-2732
> Fax:      (613) 225-9688
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>



--
attilla danko, danko@..., http://cleardarksky.com/csk

#25146 From: Robert Alexander <Tranquillitatis01@...>
Date: Wed Nov 25, 2009 6:29 pm
Subject: Re: M1
countstar16
Offline Offline
Send Email Send Email
 
At 13:16 -0500 2009/11/25, Douglas B. George wrote:
>I got a big surprise when I put together a narrowband version of M1
>- the thing
>is psychedelic.
>
><http://www.cyanogen.com/doug/M1-Narrow.jpg>http://www.cyanogen.com/doug/M1-Nar\
row.jpg

That colour is octarine, isn't it?  The colour of magic...?

;)

Rob




KEEPER: WHAT is your favorite colour?
LAUNCELOT: Blue.
KEEPER: Right. Off you go.

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

#25147 From: "attilladanko" <danko@...>
Date: Wed Nov 25, 2009 6:38 pm
Subject: Re: M1
attilladanko
Offline Offline
Send Email Send Email
 
> http://www.cyanogen.com/doug/M1-Narrow.jpg

Reminds me of that Startrek TOS eposiode with the 17000km wide amoeba. :)

#25148 From: "Bob Olson" <r.olson@...>
Date: Wed Nov 25, 2009 7:02 pm
Subject: Re: M1
r_olson2
Offline Offline
Send Email Send Email
 
Hi Doug,

Great image! Psychedelic for sure.

What focal length mode is the scope?

Bob

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

#25149 From: "Douglas B. George" <dg@...>
Date: Wed Nov 25, 2009 7:20 pm
Subject: Re: M1
maximccd
Offline Offline
Send Email Send Email
 
Attilla Danko wrote:
> Kewl.
>
> I suggest you show it at the Dec rasc meeting.

Sure.

> It would probably look more psychedelic if you cropped it a bit.

Well if your screen is 1024 x 768... take out the middle bit and put that on the
powerpoint.

Doug

--

Doug George
dgeorge@...

Diffraction Limited
Makers of Cyanogen Imaging Products
http://www.cyanogen.com/

100 Craig Henry Dr., Suite 202
Ottawa, Ontario,
Canada, K2G 5W3

Phone:    (613) 225-2732
Fax:      (613) 225-9688

#25150 From: "Douglas B. George" <dg@...>
Date: Wed Nov 25, 2009 7:21 pm
Subject: Re: M1
maximccd
Offline Offline
Send Email Send Email
 
Bob Olson wrote:
> Hi Doug,
>
> Great image! Psychedelic for sure.
>
> What focal length mode is the scope?

That was taken in the f/9 mode.  The image I posted is actually at 50% of full
scale.  I can post the full res version if you're interested.

Doug

--

Doug George
dgeorge@...

Diffraction Limited
Makers of Cyanogen Imaging Products
http://www.cyanogen.com/

100 Craig Henry Dr., Suite 202
Ottawa, Ontario,
Canada, K2G 5W3

Phone:    (613) 225-2732
Fax:      (613) 225-9688

#25151 From: "keith.hadley" <yeldahtron@...>
Date: Thu Nov 26, 2009 1:10 am
Subject: Re: M1
keith.hadley
Offline Offline
Send Email Send Email
 
It's a really interesting, detailed image. Don't know about others, but I would
appreciate seeing the full-resolution image.

--- In OAFs@yahoogroups.com, "Douglas B. George" <dg@...> wrote:
>   I can post the full res version if you're interested.
>
> Doug
>
> --

#25152 From: "Bob Olson" <r.olson@...>
Date: Thu Nov 26, 2009 5:52 am
Subject: Re: M1
r_olson2
Offline Offline
Send Email Send Email
 
Hi Doug,

I would love to see a full scale image.   I could be the cropped image that
Attilla wants if you wish.

I love the detail that you are able to get out of these narrow band images!!
Incredible.

Bob

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

#25153 From: "Douglas B. George" <dg@...>
Date: Thu Nov 26, 2009 5:12 pm
Subject: Re: M1
maximccd
Offline Offline
Send Email Send Email
 
Bob Olson wrote:
> Hi Doug,
>
> I would love to see a full scale image.   I could be the cropped image that
> Attilla wants if you wish.

Okay, here is a small piece cropped out of the middle of the image.

http://www.cyanogen.com/doug/M1-Narrow-Crop.jpg

Doug

--

Doug George
dgeorge@...

Diffraction Limited
Makers of Cyanogen Imaging Products
http://www.cyanogen.com/

100 Craig Henry Dr., Suite 202
Ottawa, Ontario,
Canada, K2G 5W3

Phone:    (613) 225-2732
Fax:      (613) 225-9688

#25154 From: Attilla Danko <danko@...>
Date: Thu Nov 26, 2009 5:27 pm
Subject: Re: M1
attilladanko
Offline Offline
Send Email Send Email
 
#25155 From: "Bob Olson" <r.olson@...>
Date: Thu Nov 26, 2009 5:37 pm
Subject: Re: M1
r_olson2
Offline Offline
Send Email Send Email
 
Hi Doug,

The star images are perfectly round. Wow, do you ever have your setup dialled
in!

I am in a Florida condo right now, typing on a laptop.  Typos are therefore
almost guaranteed.  I am so glad that you didn't crop me.

Great image.

Bob

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

#25156 From: "Douglas B. George" <dg@...>
Date: Thu Nov 26, 2009 7:17 pm
Subject: Re: M1
maximccd
Offline Offline
Send Email Send Email
 
Bob Olson wrote:
> Hi Doug,
>
> The star images are perfectly round. Wow, do you ever have your setup dialled
> in!

I've got a good mount, PEC trained using many passes in PEMPro so the periodic
error is much smaller than the seeing.  On top of that, to take out any slow
drift I'm autoguiding with a very low aggressiveness that averages out the
seeing.

With this setup I don't get trailed stars unless something goes very wrong, e.g.
some bonehead bumps into the telescope (one more reason why I stay out of the
dome).  Of course MaxIm DL automatically kicks any trailed images out of the
stack, so if I do get a bad image it doesn't affect anything.

> I am in a Florida condo right now, typing on a laptop.  Typos are therefore
> almost guaranteed.  I am so glad that you didn't crop me.

Luckily being in Florida you were too far away to get cropped.  So I just did it
to the image instead.

Doug

--

Doug George
dgeorge@...

Diffraction Limited
Makers of Cyanogen Imaging Products
http://www.cyanogen.com/

100 Craig Henry Dr., Suite 202
Ottawa, Ontario,
Canada, K2G 5W3

Phone:    (613) 225-2732
Fax:      (613) 225-9688

#25157 From: "keith.hadley" <yeldahtron@...>
Date: Fri Nov 27, 2009 2:07 am
Subject: Re: M1
keith.hadley
Offline Offline
Send Email Send Email
 
--- In OAFs@yahoogroups.com, "Douglas B. George" <dg@...> wrote:

> Okay, here is a small piece cropped out of the middle of the image.
> http://www.cyanogen.com/doug/M1-Narrow-Crop.jpg

Wow... I don't know what to say.

Messages 25128 - 25157 of 25157   Oldest  |  < Older  |  Newer >  |  Newest
Advanced
Add to My Yahoo!      XML What's This?

Copyright © 2009 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines - Help