Gallery XVI

It seems as though it has rained forever. I set up in the driveway on a clear dry night and imaged with the Stellacam EX, a Steve Mogg f6 focal reducer and the 10" f5.6 dob on a Tom Ospowski equatorial platform this is the 10"'s platform with no electronic adjustments so centering was problematic given this dob's rough movements. At first I shot 80 second images and later increased this to 4 minute images. I'm still having problems with dark subtraction with this camera. Th galaxies were shot towards my neighbors house and at that time his garage lights were on. later he did shut them off for me (Thanks). The Stellacam was set at sense up of 128x with the gain on a one "click" down from maximum.

M27 - the dumbbell nebula - This is a composite of 2, 80 second exposures

M27 - a single 80 second image

M27 - 80 seconds shot through an OIII filter

M57 - the ring nebula - a single 80 second image, this needs more image scale. Is it me or is there a hint of the central star

These are the galaxies - NGC 4490 and 4485 - one 80 sec image

M51 and its companion galaxy - 3, 80 second images

NGC 4490 and 4485 processed differently - lots of amp glow

M51 - single 80 second image - see the hot pixel trails?

Part of NGC 6888 - the crescent nebula - I saw nothing on the raw image - 4 minutes

  

Part of NGC 6888 shot for 4 minutes with a OIII filter, different camera orientation (had to take it out to put on the filter)

  

 

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