NGC 7293 in Aquarius, the Helix Nebula

NGC 7293, the Helix Nebula in Aquarius.

More recently named the God's Eye Nebula.

One of the largest as viewed from and perhaps

the closest planetary nebula to our solar system.

Date:  23 August 2022, 22 October 2022, and 19 August 2023

FOV:  approximately 73' × 49'; the angular size of NGC 7293 is about 25'

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

Pixel size:  4.78 μm

Resolution:  1.336 arcsec/pixel

Frames:  23 Aug 2223 × 240 seconds × 240 gain, Optolong L-eNhanced filter

23 Aug 2214 × 240 seconds ×   90 gain, Baader Light Pollution filter

22 Oct 2254 × 240 seconds × 240 gain, Optolong L-eNhanced filter

19 Aug 2344 × 240 seconds × 240 gain, Optolong L-eNhanced filter

Stacking:  one hundred thirty-five frames using Pixinsight

Calibration frames:  20 dark, 20 flat, 20 dark flat for each session

Total Time:  9 hours

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

HDRMST, Sat, Crop

Location:  Cherry Springs State Park near Coudersport, PA