Date Posted: 1/28/2020
Date Taken: 7/3/2018
Scope: Planewave CDK 12.5 f/8, 2541mm
Camera: SBIG STL-11000 with Astrodon Tru-Balance E-Series Gen2 filters
Temp: -25C
Mount: Losmandy Titan
Guiding: none
Exposure: Luminance only, 5 x 0.004 seconds, unbinned.
This was just an experiment early one morning when I was finishing up. I took 5 shots. After failing miserably to stack them with Registax, I combined them with MaximDL using planetary alignment. I then did some small-scale Sharpening with Photoshop. I'm quite happy with the results, especially consdering how little work it took.
There are two versions, the crop is just a digital crop centered on Copernicus crater. In the zoom, Eratosthenes is center-right, and Kepler is upper left-center.