NGC 7635 and M52 in Cassiopeia

NGC 7635, the Bubble Nebula, and M52, an open cluster in Cassiopeia.

The zombie star nova V1405 Cas 2021 is the brightest red star at the vertex of

the right angle formed by moving up from the Bubble and left of M52.

Date:  28 August 2021 and 3 July 2022

FOV:  approximately 110' × 73'; the distance between them is about 30'

Telescope:  Stellarvue SVX102T + SFFX-1 flattener (714mm, f/7)

Guiding:  ZWO ASI120MM mini mono guide camera,

Stellarvue F050G 50mm guide scope

Computer:  ASIair pro Raspberry Pi

Mount:  iOptron CEM40

Camera:  ZWO ASI071MC Pro Cooled (-10°C) Color CMOS with gain 240

Filter:  Baader Light Pollution Moonglow filter with IR cut (10 frames)

and Optolong L-eNhance narrow dual band (32 frames)

Stacking:  Forty-two 240 second frames using Deep Sky Stacker

Total Time:  2 hours 48 minutes

Processing:  GIMP

Location:  Darling Hill Observatoryt near Vesper NY (28 August 2021)

and Cherry Springs State Park near Coudersport, PA (3 July 2022)