Image Description and Details :

Imaging telescopes or lenses: Skywatcher 130PDSImaging cameras: ZWO ASI294MM ProMounts: Synta Sky-Watcher EQ6-r PROGuiding telescopes or lenses: Artesky 70/400 mmGuiding cameras: ZWO ASI290MM MiniFocal reducers: Sky-Watcher Coma corrector 0.9xSoftware: N.I.N.A. Nighttime Imaging 'N' Astronomy · Astro Pixel Processor · PixInshight · PHD2Filters: Astronomik 31mm 6nm SII Astronomik 6nm SII · Astronomik 31mm 6nm OIII Astronomik 6nm OIII · Astronomik 31mm 6nm Ha Astronomik 6nm HaAccessory: Pegasus power box micro · ZWO Off-Axis Guider · ASI ZWO EAF (Electronic Automatic Focuser) · ZWO 8x 1.25" Filter Wheel (EFW) ZWO 8X EFWDates:24 Nov 2021 , 25 Nov 2021 , 3 Dec 2021Frames:Astronomik 31mm 6nm Ha Astronomik 6nm Ha: 57x300" (4h 45') (gain: 120.00) -10C bin 2x2Astronomik 31mm 6nm OIII Astronomik 6nm OIII: 22x300" (1h 50') (gain: 120.00) -10C bin 2x2Astronomik 31mm 6nm SII Astronomik 6nm SII: 48x300" (4h) (gain: 120.00) -10C bin 2x2Integration: 10h 35'Darks: 30Flats: 20Flat darks: 20Avg. Moon age: 22.72 daysAvg. Moon phase: 49.61%Bortle Dark-Sky Scale: 5.00Mean SQM: 20.25Temperature: -3.67

Copyright: Sorin Crisan

Image Description and Details :

This was shot over the course of 18 nights, spanning 4 months (winter skies in Nashville aren't the greatest). The Canon lens was @ f/4.

The real challenge with this photo came from the Spaghetti Nebula (aka SH2-240, Simeis 147). It's incredibly dim and barely shows up in a single 20 minute sub, which is in stark contrast to brightness of the Flaming Star Nebula (IC 405, SH 2-229, or Caldwell 31) and Tadpoles Nebula (IC 410, NGC 1893). I had to process this as HDR so that they appeared to have the same brightness.

Imaging lens: Canon EF 85 mm f/1.8 USM
Imaging cameras: ZWO ASI2600MC Pro
Mounts: Sky-Watcher EQ6R-PRO
Guiding telescopes or lenses: ZWO Mini Guide Scope
Guiding cameras: ZWO ASI290MM Mini
Software: Pleiades Astrophoto PixInisight · Photoshop CC
Filters: Optlong L-eXtreme 2" · Optolong L-eNhance 2"
Accessory: ZWO AsiAir Pro

Dates:
Dec. 10, 2020, Dec. 11, 2020, Dec. 13, 2020, Dec. 18, 2020, Dec. 21, 2020, Dec. 22, 2020, Jan. 6, 2021, Jan. 13, 2021, Jan. 14, 2021, Feb. 4, 2021, Feb. 8, 2021, March 4, 2021, March 5, 2021, March 7, 2021, March 8, 2021, March 9, 2021, March 10, 2021, March 11, 2021

Frames:
Optolong L-Pro 2'': 40x15" (gain: 100.00) -10C bin 1x1
Optolong L-Pro 2'': 40x30" (gain: 100.00) -10C bin 1x1
Optolong L-Pro 2'': 40x60" (gain: 100.00) -10C bin 1x1
Optolong L-eNhance 2": 143x1200" (gain: 100.00) -10C bin 1x1
Optolong L-eXtreme 2": 56x1200" (gain: 100.00) -10C bin 1x1

Integration: 67.5 hours

Darks: ~40

Bortle Dark-Sky Scale: 8.00



Copyright: Jeffrey Horne