While prepping the scope and waiting for the double shadow transit of Jupiter to start, I did a few quick 30 second imaging runs of the moon. Of note is the difficulty in remembering what it was you imaged, after the fact, and trying to identify the objects!

All were taken with the 20cm Meade LX200GPS (f10, FL=2000mm) with a x2 barlow and the ZWO ASI 120MC colour camera, on a shaky pier. A short dew shield is attached along with a primary lens heater running at about 20% duty cycle.

The first image focus was not too sharp, as we were also battling intermittent clouds wafting by.

https://en.wikipedia.org/wiki/Mare_Humboldtianum was the 2nd image of the night and we used the sharp edge of the moon to help in focusing. After that we slewed left over to:

This is one of the nicest images of the evening. A combination of rukl’s paper atlas and Virtual Moon Atlas helped to identify it after the fact. Focus was better than the first two images.

https://en.wikipedia.org/wiki/Archimedes_(crater) was next up. Focus was pretty good but I am wondering whether to increase the exposure a tad.

https://en.wikipedia.org/wiki/Copernicus_(lunar_crater) Again this was not too bad at all… closer to the terminator with a few mountain peaks in the light.


This was the last lunar image of the evening, as Jupiter was next on the list. A little overexposed on the left side of the crater wall but otherwise not too bad.

All exposures were on the order of 3 to 10 ms and processed with autostakkert! which also did the sharpening.