A new greenhorn here... just took my first photo of the Orion Nebula a few weeks back and have now fallen in love with DSO astrophotography!
My equipment is: Canon 80D (unmodified) and Celestron NexStar 6SE. I am shooting prime focus with a T-ring on the back of the SCT. I have also shifted forward the tube as much as possible to try and balance out the weight of the camera and tube.
Just spent my first devoted night out shooting the Orion Nebula, and I have had a few problems:
1. Tracking. I tried both Auto Two-Star and Three Star (SkyAlign), and after trying with both multiple times, went with Three Star because I had a bit more success. However, the tracking was TERRIBLE! Even with 10-second exposures, most were unusable. I took 63 30-second exposures and about 2/3rds came out with blur. I have made a GIF of the photos to show: https://media.giphy....g7PQ/giphy.gif
- So. Would the StarSense module be a good investment, especially with the 10 additional objects that can be entered? Would this improve tracking?
- and is my camera the culprit here? I ran all of the tracking alignment and after that with the 80D attached... pretty sure that the tracking was still bad when I looked through an eyepiece and aligned it with only the eyepiece.
2. Imaging. The telescope is 10 years old, and I know that the telescope is a bit uncollimated. There also appears to be a bit of film/condensation on the corrector plate. I plan on cleaning the interior with alcohol and DI water. When trying to focus, after a certain point, fine tuning is useless because the stars morph between different versions of blurry. I attached an uncropped and cropped photo of my best shot. Also attached a photo of the corrector plate.
3. Probably as a result of this, DSS can't stack any of the light frames. Even when I set the the threshold to 2.
Any advice appreciated?