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