[2020BC (Bill Christie)]

Subject: Clavius, Longomontanus and Tycho
Scope: LXD-75 SN-8 (x2 Barlow) F=1624mm
Camera: Mintron 13V1C, Shutter 1/500; AGC +0; Gamma 0.45
Exposure: Stack 50/500 sorted by Registax.
Processing: Registax, Photoshop, and Noiseware.