I have posted about M51 in the past, but not like I have it now. I have previously posted about some new astronomy gear. I got a CG-5 Advanced Series mount, it is computerized and I’m able to — after properly aligning — type in an object and the mount points directly to it. It also does a pretty good job of framing it in just about the same position over multiple nights. This mount really makes it easy to find the faint targets that you can’t see from dark skies, and definitely not in the light polluted skies I’m shooting from.
Not only did I get the CG-5 mount, but I also got an autoguider setup, the Orion Starshoot Autoguider and the Orion 50mm guidescope. This allows me to lock onto a star and track it to make up for some correction in alignment to keep the object in view allowing for longer exposures. I was previously limited to about 2 minute exposures per image. With the autoguider and the CG-5 mount I’m am shooting at 5 minutes. I haven’t pushed it further yet due to the light pollution from my yard, but once it gets warmer I’ll be experimenting a bit with exposure times.
This is my first round of imaging with the new setup. I got M51 because who doesn’t like two galaxies colliding? On February 28, 2014 I got out for the first clear night in what feels like forever. This was in the least light polluted direction and in a great spot for me to image it.
This image is 21 light frames at 5 minutes with ISO800. Also included was 25 dark frames, and 25 flat frames. Image stacked in deep sky stacker and post processing done in Photoshop.
I have to say the combination of the mount and the autoguider is going to be a major improvement on what I can image. I have another image in store that I am currently working on processing which will hopefully be up with the week.