NGC 7023 or The Iris Nebula in Cepheus

NGC 7023 is a reflection nebula with surrounding dust.

Hover over the picture for an annotated version

Date:  1 July 2024

FOV:  approximately 108' × 72'; the angular size of the iris is about 18'

Telescope:  Stellarvue SVX102T + SFFX-1 (737mm, 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 90

Pixel size:  4.78 μm

Resolution:  1.333 arcsec/pixel

Filter:  Baader semi-APO

Stacking:  seventy-eight 240 second frames using Pixinsight

Calibration:  20 darks, 20 flats, 20 dark flats

Total Time:  5 hours 12 minutes

Processing:  Pixinsight – DynCrop, SPCC, DBE, SPCC, BlurXT, NoiseXT,

HST, GHS, MStr, PMath MStr + GHS + HST, Sat, Scale

Location:  Darling Hill Observatory near Vesper, NY