Neptune

10.1″ f/4.5, Mallincam DS432cTEC with 5x barlow
Exposure = 566 msec, Gain = 120 of 250
August 6, 2022  5:40 UTC

Neptune appears as a distinctly green small disk in this view. According to the RASC Observer’s Handbook the disk is 2.3 arcseconds across. Approximately 4 arcminutes northward is a 9.6 magnitude star designated UCAC4-435-121272. In the upper-righthand corner of the image is a 10.8 magnitude star. Neptune at this time is magnitude 7.8.

Image stacked in Autostakkert using the top 10% of 250 SER frames, post-processed in Affinity Photo.

North at 11 o’clock, East at 8 o’clock