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11/30/-1
    
Tuesday, June 30th, 2009
 Shortly after dark last night, my son and I took out his 6" Dob.  We viewed the moon, Saturn and the Ring nebula.  I would rate the seeing a 2/5 to 3/5.....kept changing second by second.   The view of the moon was pretty good at times.....viewed a very hard to see rille.   I pointed out that some of the craters have a central peak, and some don't. 
 
Saturn (133x) was too low in the sky for good viewing.  We could see (just barely) the shadow of the rings across the equator, with just a slight hint of the north and south atmospheric belts.
 
Later, I set up my imaging equipment in the back yard.......got started about 11pm.   My first target was NGC 6946, 10 million light years away.  It has a magnitude of 8.9 but according to what I have read, it is partially obscured by dust clouds in the Milky Way.  I then moved on the M31......although I was probably 30 days premature.   It is still fairly low in the sky at 2am.   My last target was M92.  Try as I might, I could not get a good focus......I suspect the seeing had deteriorated, and the optics of my little 80mm are marginal at best.
 
 
NGC 6946:    60 subs @ 40 seconds per sub, unguided.   I persisted, but I could tell with the
                     first frame that my polar alignment wasn't good enough.
 
M31:              66 subs @ 20 seconds per sub unguided.   This is my best M31, but only
                      because my new camera has a larger FOV.  The quality of the image is only
                      marginally improved.
 
M92:              29 subs @ 30 seconds per sub.   The central core is blown out, and the stars are
                      hopeless blobs......not posting an image at this point.   I may go out again
                      tonight and try again to get the polar alignment corrected.   Maybe the seeing
                      will have improved.
 


Image Gallery For This Session
Galaxy NGC 6946 6 29 09 M31 66x20 6 30 09
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Galaxy_NGC_6946_6_29_09.jpg
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Comments:
On 06/30/09 at 06:44pm Beth Brence wrote:
Very nice, hon. Thank you for being such a great dad, and teaching our little guy so much great science!



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