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11/30/-1
    
Thursday, July 7th, 2011
 
I am not too unhappy with the final image, but getting there was a struggle.  
 
Once again the Dec axis found a new way to lose tracking.  This time it would slowly climb to one pixel above center, hover there for a minute and drop rapidly to one pixel below center.....the graph looks like ocean waves hitting the shore.  DRAT!!!!  I think I balanced the mount about as good as possible.  I must have a gear problem.   I guess the mount needs surgury.
 
Goto worked okay.  I polar aligned and did a "one star" alignment.....then went to "precise Goto".  The scope picked Alderamin.  Hitting "enter" sent the scope to it.....off center but visible in the finder.   Roughly centering it and another "enter" and there was the Fireworks Galaxy in the camera FOV.   Not perfect but better.
 
So, here is the Fireworks galaxy NGC 6946, along with cluster NGC 6939.
 
Orion 6" imaging Newtonian
Celestron CG5 mount
Orion ST80mm guide scope
Canon 350D unmodified
Orion Starshoot II color ccd guide camera
 
Nebulosity
Deep Sky Stacker
Photo Shop CS1
 
NGC 6946:   43 subs @  3 minutes per sub
                    used:  37 lights, 5 darks, 20 flats
 
 


Image Gallery For This Session
ngc6946 embed 1 C2 ngc6946 embed 1 C3
ngc6946 embed 1 B
   

ngc6946-embed-1 C2.jpg
Click picture above for larger version
If the picture seems too bright or too dark, try adjusting the brightness below.
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Comments:
On 07/07/11 at 03:56pm Barry wrote:
Thanks Larry! I have been saying much the same thing...and frankly still am. I am getting there little by little but it's been a slow learning process. It doesn't help that my CG5 doesn't like to guide accurately in the Dec axis.

On 07/07/11 at 01:31pm Larry wrote:
This is really nice work. Hope to get to this point someday.



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