u/Atticular

130/650 Newt

Untracked

Samsung galaxy m06 smartphone camera

10mm + 3x barlow

Took 4k subs and stacked top 15%

Programmes used :

PIPP

Autostakkert

Registax

Adobe Lightroom (colour correction)

My buddy told me there was a GRS transit so i rushed to take a picture. When I initially saw this other dark spot i believed it was some stacking artifact, so I stacked again to no avail.

Then I checked stellarium and lo and behold, I accidentally captured a Callisto transit with the GRS.