Earlier in the month I threw caution to the wind and took some M51 images under
the full moon just to see what I could come up with. It came out pretty well
even though I had to drop down to ISO200 so the histogram wasn't blown out. Each
subexposure was for 10 minutes @ ISO200 (a total of 20 of them).

After processing that stack, I decided to go back and add a 17 subs I took back
when the supernova flared up just to see how it would look.  Decided to do this
to see if I could get some better detail in M51, and to see if I could drive the
background noise down a bit since I didn't shoot on a full moon.  For this group
I had 17 subexposures shot for 5 minutes @ ISO800.

I stacked the two sets (put into seperate groups with the appropriate
flats/offsets/darks), I ended up with a weird grid pattern in the final image. I
don't get this pattern when I stack the two nights individually.  I have tried
stacking using both the median kappa sigma clipping (3.00, 2 iterations) and
also an average combine and get the same result.

Here is an animated .gif showing what I am talking about.  The first frame is
the full moon night processed.  Second frame is both nights processed.  The
third frame is showing a 400% blowup showing the grid pattern observed.  This
grid pattern is only occurs where the subs from the two nights overlap.

http://home.comcast.net/~zamboni/m51grid.gif

One thing I didn't mention so far is that the subs from the two nights were
rotated ~42 degrees with respect to each other. I have a feeling that this has
something to do with the bayer matrix interpolation, and this pattern is being
caused because of the rotation between the two nights.

Any suggestions on how to avoid or get rid of this pattern?

Hi,

The rotation you mentioned and difference in background may
have something to do with this pattern.  When I stack images
from different nights, I usually stack them separately in DSS.
Then I use programs like registar to further stack them.

Cheers,
Wei-Hao



--- In DeepSkyStacker@yahoogroups.com, "locklear_fred" <zamb0ni@...> wrote:
>
> Earlier in the month I threw caution to the wind and took some M51 images
under the full moon just to see what I could come up with. It came out pretty
well even though I had to drop down to ISO200 so the histogram wasn't blown out.
Each subexposure was for 10 minutes @ ISO200 (a total of 20 of them).
>
> After processing that stack, I decided to go back and add a 17 subs I took
back when the supernova flared up just to see how it would look.  Decided to do
this to see if I could get some better detail in M51, and to see if I could
drive the background noise down a bit since I didn't shoot on a full moon.  For
this group I had 17 subexposures shot for 5 minutes @ ISO800.
>
> I stacked the two sets (put into seperate groups with the appropriate
flats/offsets/darks), I ended up with a weird grid pattern in the final image. I
don't get this pattern when I stack the two nights individually.  I have tried
stacking using both the median kappa sigma clipping (3.00, 2 iterations) and
also an average combine and get the same result.
>
> Here is an animated .gif showing what I am talking about.  The first frame is
the full moon night processed.  Second frame is both nights processed.  The
third frame is showing a 400% blowup showing the grid pattern observed.  This
grid pattern is only occurs where the subs from the two nights overlap.
>
> http://home.comcast.net/~zamboni/m51grid.gif
>
> One thing I didn't mention so far is that the subs from the two nights were
rotated ~42 degrees with respect to each other. I have a feeling that this has
something to do with the bayer matrix interpolation, and this pattern is being
caused because of the rotation between the two nights.
>
> Any suggestions on how to avoid or get rid of this pattern?
>

Wanted to add that I saved the registered/calibrated files while stacking, and
the rotated images all showed the grid pattern, while the ones that aren't
rotated are fine. If I change the reference frame to the other group, the grid
also shows up in the rotated frames.

It is the same if I try using bilinear interpolation, or AHD interpolation while
stacking.

--- In DeepSkyStacker@yahoogroups.com, "locklear_fred" <zamb0ni@...> wrote:
>
> Earlier in the month I threw caution to the wind and took some M51 images
under the full moon just to see what I could come up with. It came out pretty
well even though I had to drop down to ISO200 so the histogram wasn't blown out.
Each subexposure was for 10 minutes @ ISO200 (a total of 20 of them).
>
> After processing that stack, I decided to go back and add a 17 subs I took
back when the supernova flared up just to see how it would look.  Decided to do
this to see if I could get some better detail in M51, and to see if I could
drive the background noise down a bit since I didn't shoot on a full moon.  For
this group I had 17 subexposures shot for 5 minutes @ ISO800.
>
> I stacked the two sets (put into seperate groups with the appropriate
flats/offsets/darks), I ended up with a weird grid pattern in the final image. I
don't get this pattern when I stack the two nights individually.  I have tried
stacking using both the median kappa sigma clipping (3.00, 2 iterations) and
also an average combine and get the same result.
>
> Here is an animated .gif showing what I am talking about.  The first frame is
the full moon night processed.  Second frame is both nights processed.  The
third frame is showing a 400% blowup showing the grid pattern observed.  This
grid pattern is only occurs where the subs from the two nights overlap.
>
> http://home.comcast.net/~zamboni/m51grid.gif
>
> One thing I didn't mention so far is that the subs from the two nights were
rotated ~42 degrees with respect to each other. I have a feeling that this has
something to do with the bayer matrix interpolation, and this pattern is being
caused because of the rotation between the two nights.
>
> Any suggestions on how to avoid or get rid of this pattern?
>

OK, I have identified the problem.  The problem is due to the rotation of the
image in DSS and how it handles it.

To test this out, I took each individual night's images and created a calibrated
registered images. Because there was no rotation involved at this point, the
calibrated registered images are fine.

I took the calibrated registered images from both nights above and stacked them
all.  I also again saved calibrated registered images at this step.  The
calibrated registered images that were rotated all showed the weird grid
pattern, the ones that weren't rotated did not.

The images that were rotated showed an angle in DSS of ~ -137 degrees.

Below is a comparison between the unrotated single sub on the left, and the
rotated sub on the right (I streteched it a bit to show the grid pattern):

http://home.comcast.net/~zamboni/dssrotate.jpg

I have a feeling that DSS is having a problem in figuring out how to rotate the
images, because the square pixel pattern now needs to be rotated into a more
diamond like pattern and somehow is doing some weird interpolation that gives
this grid pattern. I have a suspicion that this grid pattern will be worst at 45
degrees, and -135 degrees of rotation.

I also did a slight bit of searching and found a thread that shows this same
problem. The guy solved it by stacking in a different program than DSS.

http://tech.groups.yahoo.com/group/DeepSkyStacker/message/9273

Any ideas if this can be fixed in DSS, or should I just go and try to stack in a
different program (would rather not)?


Fred

--- In DeepSkyStacker@yahoogroups.com, weihaowang <no_reply@...> wrote:
>
> Hi,
>
> The rotation you mentioned and difference in background may
> have something to do with this pattern.  When I stack images
> from different nights, I usually stack them separately in DSS.
> Then I use programs like registar to further stack them.
>
> Cheers,
> Wei-Hao
>
>
>
> --- In DeepSkyStacker@yahoogroups.com, "locklear_fred" <zamb0ni@> wrote:
> >
> > Earlier in the month I threw caution to the wind and took some M51 images
under the full moon just to see what I could come up with. It came out pretty
well even though I had to drop down to ISO200 so the histogram wasn't blown out.
Each subexposure was for 10 minutes @ ISO200 (a total of 20 of them).
> >
> > After processing that stack, I decided to go back and add a 17 subs I took
back when the supernova flared up just to see how it would look.  Decided to do
this to see if I could get some better detail in M51, and to see if I could
drive the background noise down a bit since I didn't shoot on a full moon.  For
this group I had 17 subexposures shot for 5 minutes @ ISO800.
> >
> > I stacked the two sets (put into seperate groups with the appropriate
flats/offsets/darks), I ended up with a weird grid pattern in the final image. I
don't get this pattern when I stack the two nights individually.  I have tried
stacking using both the median kappa sigma clipping (3.00, 2 iterations) and
also an average combine and get the same result.
> >
> > Here is an animated .gif showing what I am talking about.  The first frame
is the full moon night processed.  Second frame is both nights processed.  The
third frame is showing a 400% blowup showing the grid pattern observed.  This
grid pattern is only occurs where the subs from the two nights overlap.
> >
> > http://home.comcast.net/~zamboni/m51grid.gif
> >
> > One thing I didn't mention so far is that the subs from the two nights were
rotated ~42 degrees with respect to each other. I have a feeling that this has
something to do with the bayer matrix interpolation, and this pattern is being
caused because of the rotation between the two nights.
> >
> > Any suggestions on how to avoid or get rid of this pattern?
> >
>

You're quite right, on review of the files I chose the wrong ISO by mistake, so
I think it is possible the flats might be too over exposed.  Will see what
happens with the next batch.

Carole

--- In DeepSkyStacker@yahoogroups.com, Sander Pool <sander_pool@...> wrote:
>
>
> Hi Carole,
>
> you're not giving us much to go on so all I can suggest is that you
> review all your files carefully and make sure they are taken with the
> correct gain/offset/ISO etc.
>
> DSS did not break all of a sudden. Reinstall -never- fixes these types
> of problems. I don't want to nitpick but flats are not subtracted. Your
> dark subtracted light is divided by a normalized flat. This is important
> because an understanding of what's going on can help you figure out why
> it's not working right now.
>
> (light - dark) / normalized(flat - dark flat)
>
>      Sander
>
> On 4/11/2012 7:52 PM, Carole wrote:
> >
> > I have been using DSS for at least 2 years and today it would not
> > subtract flats from my images. I have never had this problem before,
> > although occasional dust specks sometimes get left, but always the
> > vignetting would be subtracted, however today, nothing got subtracted.
> >
> > Checked and re-checked, checked settings, and tried more than once.
> > Tried a fresh install but still happening.
> >
> > Not had this problem before, so can't understand what is going on.
> >
> > Any ideas?
> >
> > Carole
> >
> >
>
>
> [Non-text portions of this message have been removed]
>

You are very kind, John ”
Happy you like it.
Best regards,
Antonio


Antonio F.Sanchez
SPAG-Monfrague Observatory
http://afesan.es

   ----- Original Message -----
   From: john scholl
   To: DeepSkyStacker@yahoogroups.com
   Sent: Saturday, April 14, 2012 1:18 AM
   Subject: Re: [DeepSkyStacker] First try with QHY10 OSC



   Outstanding image!!
   John Scholl

   --------------------------------------------------
   From: "ToƱo" <afesan@...>
   Sent: Thursday, April 12, 2012 6:48 PM
   To: <DeepSkyStacker@yahoogroups.com>
   Subject: [DeepSkyStacker] First try with QHY10 OSC

   > Hi all..
   > Although I used a QHY8 OSC CCD in the past (years 2007 and 2008) ..lately
   > I was using a monochrome STL11000M CCD.. and I forgot many old tips with
   > those OSC cameras..
   > A friend of mine..lent me a QHY10 OSC CCD ..and I attached it to my actual
   > equipment..This is my first image ,I am trying to remember those old days
   > :-)
   >
   > These are 36x15 minutes subframes taken under moderately dark skies..
   > using an astrograph ASA N12 (1087mm, f/3.6) ..ASA DDM85 mount ..and all
   > subframes were taken unguided..
   > Even I am not inclined to galaxies (I prefer nebulas as targets)..this is
   > not the best season(I must wait to summertime)..
   >
   > Anyway,,,here is my frist try. Galaxies in the field are M88 and M91 into
   > Coma Berenices..
   > Link to image:
   > http://afesan.es/Astrophotography/index.htm?19_L
   >
   > Acquired with CCDAutopilot5 and MaximDL
   > ASA mount software Autoslew and Sequence09
   > Stacked and aligned at DSS
   > Curves,levels and some tips...with PSCS4..
   > Thanks for looking”
   > BR”
   >
   > Antonio F. Sanchez
   > http://afesan.es
   >
   >
   >
   >
   > ------------------------------------
   >
   > Yahoo! Groups Links
   >
   >
   >
   >




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

Many thanks for looking, Len Ā”

Best regards,


Antonio F.Sanchez
SPAG-Monfrague Observatory
http://afesan.es

   ----- Original Message -----
   From: Len & Val Ward
   To: DeepSkyStacker@yahoogroups.com
   Sent: Saturday, April 14, 2012 12:43 AM
   Subject: Re: [DeepSkyStacker] First try with QHY10 OSC



   Antonio ;

   Very nice.

   Fly with Pegasus
   Len

   -----Original Message-----

   From: ToƃĀ±o

   Sent: Apr 12, 2012 7:48 PM

   To: DeepSkyStacker@yahoogroups.com

   Subject: [DeepSkyStacker] First try with QHY10 OSC

   Hi all..

   Although I used a QHY8 OSC CCD in the past (years 2007 and 2008) ..lately I
was using a monochrome STL11000M CCD.. and I forgot many old tips with those OSC
cameras..

   A friend of mine..lent me a QHY10 OSC CCD ..and I attached it to my actual
equipment..This is my first image ,I am trying to remember those old days :-)

   These are 36x15 minutes subframes taken under moderately dark skies..

   using an astrograph ASA N12 (1087mm, f/3.6) ..ASA DDM85 mount ..and all
subframes were taken unguided..

   Even I am not inclined to galaxies (I prefer nebulas as targets)..this is not
the best season(I must wait to summertime)..

   Anyway,,,here is my frist try. Galaxies in the field are M88 and M91 into Coma
Berenices..

   Link to image:

   http://afesan.es/Astrophotography/index.htm?19_L

   Acquired with CCDAutopilot5 and MaximDL

   ASA mount software Autoslew and Sequence09

   Stacked and aligned at DSS

   Curves,levels and some tips...with PSCS4..

   Thanks for lookingĀ”

   BRĀ”

   Antonio F. Sanchez

   http://afesan.es





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

hi everyone,first post.
im using the beta version to stack lights and darks from my canon 600d.
every thing goes ok till the end,compute final image,then a little box appears
with an eclamation mark in a triangle and ok in bottom right hand corner.anybody
any idea,s.thanks ken.

Hi Ken,

See if this explains it:

http://deepskystacker.wikispaces.com/Memory+errors+while+stacking%3F

      Sander

On 4/16/2012 7:12 PM, geordie44_99 wrote:
>
> hi everyone,first post.
> im using the beta version to stack lights and darks from my canon 600d.
> every thing goes ok till the end,compute final image,then a little box
> appears with an eclamation mark in a triangle and ok in bottom right
> hand corner.anybody any idea,s.thanks ken. ~-|**|PrettyHtmlEnd|**|-~
> end group email -->
>


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

Hello,

Last night I took 7 x 5 min subs of M63 (raw) on a 1100D. In APT they look fine
with a decent-ish amount of detail in the galaxy.

However, whenever I stack them (with 1 x dark, 8 x flats, 8 x bias - not many
but I was running out of power...), the galaxy disappears  leaving just the
stars. I've tried the adjusting the luminance in both DSS and photoshop and
nothing appears.

Any ideas what I might be doing wrong?

Many thanks

Tom

Hi Tom,

hard to say as we know nothing of your images. Read this recent message
and see if it gives you some ideas.

http://tech.groups.yahoo.com/group/DeepSkyStacker/message/11932

      Sander

On 4/16/2012 9:52 PM, ginga_tom_cat wrote:
>
> Hello,
>
> Last night I took 7 x 5 min subs of M63 (raw) on a 1100D. In APT they
> look fine with a decent-ish amount of detail in the galaxy.
>
> However, whenever I stack them (with 1 x dark, 8 x flats, 8 x bias -
> not many but I was running out of power...), the galaxy disappears
> leaving just the stars. I've tried the adjusting the luminance in both
> DSS and photoshop and nothing appears.
>
> Any ideas what I might be doing wrong?
>
> Many thanks
>
> Tom
>
>


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

You're not doing anything wrong, it's just the way things work. You're stacking
12 bit raw images into 32 bit images. You are expected to post-process the image
to produce the pretty picture. I've got good results from :PixiInSight.
Expensive and quirky but good. PS6 apparentely manipulates 32 bit  tif files.

http://deepskystacker.wikispaces.com/Why+is+my+image+so+dark%3F
.
Kerry Koppert

   ----- Original Message -----
   From: ginga_tom_cat
   To: DeepSkyStacker@yahoogroups.com
   Sent: Tuesday, April 17, 2012 7:52 AM
   Subject: [DeepSkyStacker] Processing image in DSS makes object completely
disappear...



   Hello,

   Last night I took 7 x 5 min subs of M63 (raw) on a 1100D. In APT they look
fine with a decent-ish amount of detail in the galaxy.

   However, whenever I stack them (with 1 x dark, 8 x flats, 8 x bias - not many
but I was running out of power...), the galaxy disappears leaving just the
stars. I've tried the adjusting the luminance in both DSS and photoshop and
nothing appears.

   Any ideas what I might be doing wrong?

   Many thanks

   Tom





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

Hi,

Has any one contacted Luc recently?

I feel the problem here is kind of serious and
tried to remind Luc about this thread.  I sent
emails to his free.fr account, but the emails
were bounced back immediately.  I wonder if
that email is no longer in use.

Anyone knows?

Cheers,
Wei-Hao

When travelling I sometimes like to take untracked pictures using just
my 50mm f/1.8 lens on a fixed tripod.

However a downside is that the barrel distortion in the lens causes the
distance between stars to vary as they move across the field.

Is there any mechanism in DSS (or perhaps via pre-processing each frame)
that can cope with non-linear transformations in the star field?

thanks,

Ray

Ray;

   Canons "Digital Photo Professional" software has a feature that can correct
for known distortion of Canon lenses. Open the Tool Palette and select the
"NR/Lens/ALO" tab, click the "Tune" button and adjust to your taste.

Fly with Pegasus
Len



-----Original Message-----

From: Ray Bellis

Sent: Apr 20, 2012 10:23 AM

To: DeepSkyStacker@yahoogroups.com

Subject: [DeepSkyStacker] Non-linear stacking transformations?




























       When travelling I sometimes like to take untracked pictures using just

my 50mm f/1.8 lens on a fixed tripod.



However a downside is that the barrel distortion in the lens causes the

distance between stars to vary as they move across the field.



Is there any mechanism in DSS (or perhaps via pre-processing each frame)

that can cope with non-linear transformations in the star field?



thanks,



Ray

Hi Sander

Thanks for replying.

What's the best way to upload tiff/raw? Or would jpeg suffice?

The same problem occurred when I tried to stack 10 x 5 min subs of m101.

Many thanks

Tom
--- In DeepSkyStacker@yahoogroups.com, Sander Pool <sander_pool@...> wrote:
>
>
> Hi Tom,
>
> hard to say as we know nothing of your images. Read this recent message
> and see if it gives you some ideas.
>
> http://tech.groups.yahoo.com/group/DeepSkyStacker/message/11932
>
>      Sander
>
> On 4/16/2012 9:52 PM, ginga_tom_cat wrote:
> >
> > Hello,
> >
> > Last night I took 7 x 5 min subs of M63 (raw) on a 1100D. In APT they
> > look fine with a decent-ish amount of detail in the galaxy.
> >
> > However, whenever I stack them (with 1 x dark, 8 x flats, 8 x bias -
> > not many but I was running out of power...), the galaxy disappears
> > leaving just the stars. I've tried the adjusting the luminance in both
> > DSS and photoshop and nothing appears.
> >
> > Any ideas what I might be doing wrong?
> >
> > Many thanks
> >
> > Tom
> >
> >
>
>
> [Non-text portions of this message have been removed]
>

Deep sky stacker is not really  a processing tool only a stacking tool..

http://deepskystacker.wikispaces.com/Why+is+my+image+so+dark%3F

Great tutorial here on adjusting levels and Photoshop curves to bring
out your details..

http://myastroimages.com/Astro_Imaging_Tutorials/Learning_To_Use_PhotoShop_Curve\
s


Ray J



On 4/21/2012 8:07 PM, ginga_tom_cat wrote:
>
> Hi Sander
>
> Thanks for replying.
>
> What's the best way to upload tiff/raw? Or would jpeg suffice?
>
> The same problem occurred when I tried to stack 10 x 5 min subs of m101.
>
> Many thanks
>
> Tom
> --- In DeepSkyStacker@yahoogroups.com
> <mailto:DeepSkyStacker%40yahoogroups.com>, Sander Pool <sander_pool@...>
> wrote:
>  >
>  >
>  > Hi Tom,
>  >
>  > hard to say as we know nothing of your images. Read this recent message
>  > and see if it gives you some ideas.
>  >
>  > http://tech.groups.yahoo.com/group/DeepSkyStacker/message/11932
>  >
>  > Sander
>  >
>  > On 4/16/2012 9:52 PM, ginga_tom_cat wrote:
>  > >
>  > > Hello,
>  > >
>  > > Last night I took 7 x 5 min subs of M63 (raw) on a 1100D. In APT they
>  > > look fine with a decent-ish amount of detail in the galaxy.
>  > >
>  > > However, whenever I stack them (with 1 x dark, 8 x flats, 8 x bias -
>  > > not many but I was running out of power...), the galaxy disappears
>  > > leaving just the stars. I've tried the adjusting the luminance in both
>  > > DSS and photoshop and nothing appears.
>  > >
>  > > Any ideas what I might be doing wrong?
>  > >
>  > > Many thanks
>  > >
>  > > Tom
>  > >
>  > >
>  >
>  >
>  > [Non-text portions of this message have been removed]
>  >
>
>

Hi Ray,

DSS does have non-linear transformation.  If you open the
alignment tab, you will see that it can do linear,
bi-square, and bi-cublic transform. DSS will automatically
choose one of the three schemes depending on the
number of available stars, or can be forced to use any
of them by the user.

The real issue here is whether DSS can identify corresponding
stars in many differentially distorted images.  I sometimes
suffer from this issue on images taken with good tracking/guiding.
When DSS mis-identifies stars in different images, the bi-cubic
or bi-square results can be ugly.

So the capability is definitely there, but it may not work perfectly.
You can give it a try.  If it works, it works.

Cheers,
Wei-Hao



--- In DeepSkyStacker@yahoogroups.com, Ray Bellis <ray@...> wrote:
>
> When travelling I sometimes like to take untracked pictures using just
> my 50mm f/1.8 lens on a fixed tripod.
>
> However a downside is that the barrel distortion in the lens causes the
> distance between stars to vary as they move across the field.
>
> Is there any mechanism in DSS (or perhaps via pre-processing each frame)
> that can cope with non-linear transformations in the star field?
>
> thanks,
>
> Ray
>

One other thing -- Your 50/1.8 lens probably does not have barrel
distortion.  But the image scale is larger at the edges than at the
center because you are projecting a sphere onto a flat surface.  It is
the same problem as making flat maps of a round earth.

A distortion-free lens (or even a pinhole camera) will perfectly
reproduce a *flat* object.  The flat object is closer to the lens at the
center than at the edges.  Hence the apparent angular size of equal
spaces on the object is smaller near the edges, and these are correctly
reproduced as equal spaces on the film.  The celestial sphere is not
flat -- we imagine the sky as a hollow ball with us at the center, and
we expect angles to be the same everywhere.

There is a nice picture illustrating this in my /Astrophotography for
the Amateur./

It is of course just as much of a challenge for stacking as if it *were*
distortion.

--
Michael A. Covington, Ph.D., Consultant
Covington Innovations, Athens, Georgia, USA
http://www.covingtoninnovations.com




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

Hi

I'm using PS3 to process files after stacking, but it show anything.

I've added a tiff to Tom M folder (raws are too big). It's meant to be M101.
Like M63, the raw image shows the galaxy with some detail, but nothing appears
in the stacked image.

I look forward to your assistance

Thanks

Tom

--- In DeepSkyStacker@yahoogroups.com, Sander Pool <sander_pool@...> wrote:
>
>
> Hi Tom,
>
> hard to say as we know nothing of your images. Read this recent message
> and see if it gives you some ideas.
>
> http://tech.groups.yahoo.com/group/DeepSkyStacker/message/11932
>
>      Sander
>
> On 4/16/2012 9:52 PM, ginga_tom_cat wrote:
> >
> > Hello,
> >
> > Last night I took 7 x 5 min subs of M63 (raw) on a 1100D. In APT they
> > look fine with a decent-ish amount of detail in the galaxy.
> >
> > However, whenever I stack them (with 1 x dark, 8 x flats, 8 x bias -
> > not many but I was running out of power...), the galaxy disappears
> > leaving just the stars. I've tried the adjusting the luminance in both
> > DSS and photoshop and nothing appears.
> >
> > Any ideas what I might be doing wrong?
> >
> > Many thanks
> >
> > Tom
> >
> >
>
>
> [Non-text portions of this message have been removed]
>

Hi Tom,

the image only shows either stars or hot pixels so it is indeed not a
good image. With a size of only 500KB it's doubtful this is the original
autosave.tif so I can't draw any conclusions from that, sorry.

It would be helpful if you did the analysis I proposed in my original
image or uploaded an original autosave.tif. Spend some time on the wiki
please.

      Sander

On 4/22/2012 12:13 AM, ginga_tom_cat wrote:
>
>
> Hi
>
> I'm using PS3 to process files after stacking, but it show anything.
>
> I've added a tiff to Tom M folder (raws are too big). It's meant to be
> M101. Like M63, the raw image shows the galaxy with some detail, but
> nothing appears in the stacked image.
>
> I look forward to your assistance
>
> Thanks
>
> Tom ~-|**|PrettyHtmlEnd|**|-~ end group email -->
>


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

Good evening!



I was out at the lake last night with my CGEM and camera (no telescope
yet).  My Canon 60D was mounted directly to the CGEM using an ADM
plate.  All five images were taken with the Canon EF 300mm f/4.0L IS USM
  lens, except for the Milky Way image, which was taken using the Canon
EF 28mm f/1.8L USM lens.  All were processed using Deep Sky Stacker and
then edited in Photoshop.  Below are links and short setting
descriptions for each image - enjoy, and please comment; I'd love to
know what you think.



http://ap.scodavis.com/M13.jpg

ISO 1600, f/5.6, 60 Seconds

38/40 Lights, 9 Darks



http://ap.scodavis.com/M44.jpg

ISO 1600, f/5.6, 60 Seconds

38/40 Lights, 9 Darks



http://ap.scodavis.com/M45.jpg

ISO 800, f/5.6, 60 Seconds

28/30 Lights, 5 Darks



http://ap.scodavis.com/M51.jpg

ISO 1600, f/4.0, 75 Seconds

38/40 Lights, 9 Darks



http://ap.scodavis.com/MilkyWay.jpg

ISO 800, f/2.5, 60 Seconds

9/10 Lights, 3 Darks



-Scott



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

Hi Scott,

Nice images, just push Photoshop a bit more or use PixInsight to get some more
signal out of your images.
I could get some more signal out of your M45 jpg image in PI.

Love to have a crack at the tif file(s) in PI.

-Eelko.


________________________________
  From: Scott Davis <scodavis@...>
To: deepskystacker@yahoogroups.com
Sent: Sunday, April 22, 2012 10:40 PM
Subject: [DeepSkyStacker] Images From 4/21/12


Ā 

Good evening!

I was out at the lake last night with my CGEM and camera (no telescope
yet).  My Canon 60D was mounted directly to the CGEM using an ADM
plate.  All five images were taken with the Canon EF 300mm f/4.0L IS USM
lens, except for the Milky Way image, which was taken using the Canon
EF 28mm f/1.8L USM lens.  All were processed using Deep Sky Stacker and
then edited in Photoshop.  Below are links and short setting
descriptions for each image - enjoy, and please comment; I'd love to
know what you think.

http://ap.scodavis.com/M13.jpg

ISO 1600, f/5.6, 60 Seconds

38/40 Lights, 9 Darks

http://ap.scodavis.com/M44.jpg

ISO 1600, f/5.6, 60 Seconds

38/40 Lights, 9 Darks

http://ap.scodavis.com/M45.jpg

ISO 800, f/5.6, 60 Seconds

28/30 Lights, 5 Darks

http://ap.scodavis.com/M51.jpg

ISO 1600, f/4.0, 75 Seconds

38/40 Lights, 9 Darks

http://ap.scodavis.com/MilkyWay.jpg

ISO 800, f/2.5, 60 Seconds

9/10 Lights, 3 Darks

-Scott



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




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

I have encountered the same problem as Timothy: "DSS Live" starts OK, but when I
click on the desktop icon placed by the DSS setup program, or on the DSS icon in
the "Start - All Programs" DSS group, the MS message saying that "DeepSkyStacker
has encountered a problem and needs to close" appears, and asks me to notify
Microsoft about the problem. This happens every time I try to run it.

I have never used DSS before, and just installed version 3.3.2, downloaded from
DSS's website.

My computer has an Intel Q9550 cpu, a Gigabyte G41MT-ES2L motherboard, an NVIDIA
GeForce 9800 GT video card with 1024MB of video memory, the motherboard has 4GB
of RAM installed, the system has a 1TB Western Digital hard drive, and the OS is
WinXP Pro SP3 with all of the current MS updates installed. I am not
overclocking anything.

Any guidance would be greatly appreciated. Thanks in advance.

Anders

Hi,

unfortunately we hardly ever figure out what's causing those problems.
First install the beta please.

http://deepskystacker.wikispaces.com/Where+do+I+get+the+beta%3F

      Sander

On 4/25/2012 1:20 AM, ajn41989 wrote:
>
> I have encountered the same problem as Timothy: "DSS Live" starts OK,
> but when I click on the desktop icon placed by the DSS setup program,
> or on the DSS icon in the "Start - All Programs" DSS group, the MS
> message saying that "DeepSkyStacker has encountered a problem and
> needs to close" appears, and asks me to notify Microsoft about the
> problem. This happens every time I try to run it.
>
> I have never used DSS before, and just installed version 3.3.2,
> downloaded from DSS's website.
>
> My computer has an Intel Q9550 cpu, a Gigabyte G41MT-ES2L motherboard,
> an NVIDIA GeForce 9800 GT video card with 1024MB of video memory, the
> motherboard has 4GB of RAM installed, the system has a 1TB Western
> Digital hard drive, and the OS is WinXP Pro SP3 with all of the
> current MS updates installed. I am not overclocking anything.
>
> Any guidance would be greatly appreciated. Thanks in advance.
>
> Anders ~-|**|PrettyHtmlEnd|**|-~ end group email -->
>


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

The beta appears to be working! Thanks very much, Sander!

Anders

--- In DeepSkyStacker@yahoogroups.com, Sander Pool <sander_pool@...> wrote:
>
>
> Hi,
>
> unfortunately we hardly ever figure out what's causing those problems.
> First install the beta please.
>
> http://deepskystacker.wikispaces.com/Where+do+I+get+the+beta%3F
>
>      Sander
>
> On 4/25/2012 1:20 AM, ajn41989 wrote:
> >
> > I have encountered the same problem as Timothy: "DSS Live" starts OK,
> > but when I click on the desktop icon placed by the DSS setup program,
> > or on the DSS icon in the "Start - All Programs" DSS group, the MS
> > message saying that "DeepSkyStacker has encountered a problem and
> > needs to close" appears, and asks me to notify Microsoft about the
> > problem. This happens every time I try to run it.
> >
> > I have never used DSS before, and just installed version 3.3.2,
> > downloaded from DSS's website.
> >
> > My computer has an Intel Q9550 cpu, a Gigabyte G41MT-ES2L motherboard,
> > an NVIDIA GeForce 9800 GT video card with 1024MB of video memory, the
> > motherboard has 4GB of RAM installed, the system has a 1TB Western
> > Digital hard drive, and the OS is WinXP Pro SP3 with all of the
> > current MS updates installed. I am not overclocking anything.
> >
> > Any guidance would be greatly appreciated. Thanks in advance.
> >
> > Anders ~-|**|PrettyHtmlEnd|**|-~ end group email -->
> >
>
>
> [Non-text portions of this message have been removed]
>

Excellent! Thanks for letting us know.

      Sander

On 4/25/2012 1:26 PM, ajn41989 wrote:
>
>
> The beta appears to be working! Thanks very much, Sander!
>
> Anders
>


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

Really this galaxy seems to me like a cream cookie of my local cake shop

NGC4725 is a medium sized galaxy positioned around center of a constellation of
Coma Berenices. The galaxy isn't so well known because there are many famous
galaxies being distributed around this star-field. But has a diameter of 10 arc
minutes and 10th magnitude, it's unexpectedly worth seeing. NGC4725 is a galaxy
classified in so-called the "Bared galaxy"; it consists of bar-structure across
the nuclei and a pair of arms surrounding them. The arms of NGC4725 are coiled
up fairly tight, it seems that the arms surround the galaxy in circumference.
And this picture shows you two fine neighboring galaxies; they are NGC4747 and
NGC4715 at the upper left and the right of NGC4725, respectively.

NGC 4747 seems to be interacting with NGC 4725... it“s really a distorted
galaxy. More info:  htthttp://adsabs.harvard.edu/full/1979AJ.....84.1830H
p://adsabs.harvard.edu/full/1979AJ.....84.1830H

The overall image is the result of 68x15 subframes of 15 minutes each...All
unguided with the DDM85 "S" mount.  ASA N12 astrograph as usual and a OSC CCD
camera QHY10,, ( 6.05 microms..ultra low noise”).
Personal procesing taste investe here.  .I like "soft" procesing and as natural
as possible.. But this is just personal.Image is showed here a 63% in it“s
bigger size.

Stacked with DSS.

PSCS4 and PixInsight

Link to image:
http://afesan.es/Astrophotography/index.htm?20_L

Best regards

Antonio
http://afesan.es

Beautiful image, Antonio.  The color and detail that you were able to get in the
galaxies is stunning!

-Scott




To: DeepSkyStacker@yahoogroups.com
From: afesan@...
Date: Wed, 25 Apr 2012 23:21:10 +0000
Subject: [DeepSkyStacker] NGC 4725 and a cream cookie with QHY10


























       Really this galaxy seems to me like a cream cookie of my local cake shop



NGC4725 is a medium sized galaxy positioned around center of a constellation of
Coma Berenices. The galaxy isn't so well known because there are many famous
galaxies being distributed around this star-field. But has a diameter of 10 arc
minutes and 10th magnitude, it's unexpectedly worth seeing. NGC4725 is a galaxy
classified in so-called the "Bared galaxy"; it consists of bar-structure across
the nuclei and a pair of arms surrounding them. The arms of NGC4725 are coiled
up fairly tight, it seems that the arms surround the galaxy in circumference.
And this picture shows you two fine neighboring galaxies; they are NGC4747 and
NGC4715 at the upper left and the right of NGC4725, respectively.



NGC 4747 seems to be interacting with NGC 4725... it“s really a distorted
galaxy. More info:  htthttp://adsabs.harvard.edu/full/1979AJ.....84.1830H
p://adsabs.harvard.edu/full/1979AJ.....84.1830H



The overall image is the result of 68x15 subframes of 15 minutes each...All
unguided with the DDM85 "S" mount.  ASA N12 astrograph as usual and a OSC CCD
camera QHY10,, ( 6.05 microms..ultra low noise”).

Personal procesing taste investe here.  .I like "soft" procesing and as natural
as possible.. But this is just personal.Image is showed here a 63% in it“s
bigger size.



Stacked with DSS.



PSCS4 and PixInsight



Link to image:

http://afesan.es/Astrophotography/index.htm?20_L



Best regards



Antonio

http://afesan.es


















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

Thanks a lot for your kind commentaries, Scott””
Happy you like it”
BR ”
Antonio

-----Mensaje original-----
From: Scott Davis
Sent: Wednesday, April 25, 2012 11:33 PM
To: deepskystacker@yahoogroups.com
Subject: RE: [DeepSkyStacker] NGC 4725 and a cream cookie with QHY10


Beautiful image, Antonio.  The color and detail that you were able to get in
the galaxies is stunning!

-Scott




To: DeepSkyStacker@yahoogroups.com
From: afesan@...
Date: Wed, 25 Apr 2012 23:21:10 +0000
Subject: [DeepSkyStacker] NGC 4725 and a cream cookie with QHY10


























       Really this galaxy seems to me like a cream cookie of my local cake
shop



NGC4725 is a medium sized galaxy positioned around center of a constellation
of Coma Berenices. The galaxy isn't so well known because there are many
famous galaxies being distributed around this star-field. But has a diameter
of 10 arc minutes and 10th magnitude, it's unexpectedly worth seeing.
NGC4725 is a galaxy classified in so-called the "Bared galaxy"; it consists
of bar-structure across the nuclei and a pair of arms surrounding them. The
arms of NGC4725 are coiled up fairly tight, it seems that the arms surround
the galaxy in circumference. And this picture shows you two fine neighboring
galaxies; they are NGC4747 and NGC4715 at the upper left and the right of
NGC4725, respectively.



NGC 4747 seems to be interacting with NGC 4725... it“s really a distorted
galaxy. More info:  htthttp://adsabs.harvard.edu/full/1979AJ.....84.1830H
p://adsabs.harvard.edu/full/1979AJ.....84.1830H



The overall image is the result of 68x15 subframes of 15 minutes each...All
unguided with the DDM85 "S" mount.  ASA N12 astrograph as usual and a OSC
CCD camera QHY10,, ( 6.05 microms..ultra low noise”).

Personal procesing taste investe here.  .I like "soft" procesing and as
natural as possible.. But this is just personal.Image is showed here a 63%
in it“s bigger size.



Stacked with DSS.



PSCS4 and PixInsight



Link to image:

http://afesan.es/Astrophotography/index.htm?20_L



Best regards



Antonio

http://afesan.es


















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



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

Yahoo! Groups Links




Antonio
http://afesan.es