Taken on the morning of December 27, 2018 using a Stellarvue SV50ED (50mm aperture, f/6.6), an Astro-Physics Advanced Convertible Barlow (at 2.3X), a ZWO ASI183MM Pro camera, and a Baader CCD-filter R (red). Best 50% of 451 frames using Autostakkert!, sharpened with Registax, and finished with Photoshop CC2017.
This was about a 50% reduction from the final master image that was resized to conform to the CN posting guidelines. With the barlow the SV50ED was working at about f/15.2 and an effective focal length of 760mm.
This was a test to see how much detail I could obtain by matching the moon's full disk to the frame bounds of the ASI183 camera. To do so you need to use a focal length of about 800mm, so at 760mm I was a little under the maximum. I'd rate the seeing conditions when this image was taken as only fair (with some passing high clouds), so I expect better results in the future.
In addition to the image of the moon, I've included a picture of the SV50ED with the extensions used to mount the A-P barlow and the ASI183MM camera (with filter wheel). In the future I plan on using an uncooled, Color IMX183 so there will be no need for the filter wheel and the total package will be significantly smaller with less weight on the focuser.
Edited by james7ca, 28 December 2018 - 05:02 AM.