navi_211212

Navi (Gamma Cassiopeiae, 27 Cas, HR 264), a variable double star (mag 2.2 and 10.9) 550 light years distant, and surrounding region

Test image to demonstrate ring/halo issue

Officina Stellara RH-200 Riccardi-Honders astrograph, 600-mm focal length, f/3

69 30-second subs

No guiding

Mount: iOptron GEM45

Camera: ZWO ASI2600MC

IDAS LPS D2 light pollution filter

Capture and calibration: Nebulosity 4

Processing: PixInsight 1.8

Done