Nice shot. The ball you are referring to does look to me like an artifact of something in the imaging system. Maybe you could try a test shot with the filter removed and see if the ball goes away. patrick On 11 Nov 2013, at 16:12, gazebo4sale@comcast.net wrote:
Hi, I had an amazing imaging session last night at my home in urban Mesquite Nevada. Sky was dark and the moon setting. I was able to set up, I had no, none, nada issues with drivers, cables or Murphy (this is the first time he deserted me). I would like your opinions as to whether the big bright ball around the intense nebulosity area is an internal reflecton off my pollution filter. I do like my picture and I hope you do also.
Horsehead Nebula see: http://home.comcast.net/~galico/Astropics/Horsehead.jpg
I got 53X250 Second Images,ISO 1600 of which Deep Sky Stacker used 46 with a 85% setting for usable frames. There was a satellite that does show up in the images.
Thanks Steve Gallenson
Equipment Used: Takahashi FSQ 106 N Takahashi EM 200 Temma 2 Canon T3i Hutech Modified Hutech Pollution filter Lodestar Guide Camera mounted on piggybacked 500 mm Nikon Catadioptic Lens. Guided with PHD Captured with Nebulosity Processed with DSS, Nebulosity and Photoshop.