Open Star Cluster NGC 457 in The Constellation Cassiopeia 2020-09-18.

Aberkenfig, South Wales

Lat +51.542 Long -3.593

 

Skywatcher 254mm Newtonian Reflector, Olympus E410 at prime focus. EQ6 Syntrek Mount.

 

12 x 40s ISO 800

Also 10 dark frames

 

Imaging session commenced at 00:08 UT

 

Processed with Deep Sky Stacker and final levels adjusted with G.I.M.P.

 

The final image is cropped but it still displays some coma towards the edges. This is one drawback of a parabolic f/4.8

Newtonian.

Done