Cygnus Loop (HOO), 2019
The Cygnus loop (radio source W78 or Sharpless 103) is a large expanding cloud of hot dust and gas born of the death explosion of a massive star in the constellation of Cygnus. The nebula is 1,500 light-years away and the supernova that created it occurred 5,000 to 8,000 years ago and would have been bright enough to be seen with the naked eye from Earth.
Tech Card
Date / Location
August - September 2019, Bedworth, GMT+0, United Kingdom, Bortle Class 5 ~SGM: 19.57 mag./arc sec2
Equipment
Camera: ZWO ASI 1600MM-PRO USB 3.0 Mono (Type CMOS)
Sensor Cooling Temperature: -15C
Filters: 1.25" 5nm Astrodon Ha, 1.25" 3nm Astrodon OIII
Imaging Telescope: Takahashi FS-60CB
Correcting Lens: Takahashi Reducer 0.72x (composite focal length at 264mm and focal ratio at f/4.9)
Mount: iOptron CEM25EC
Image Quality
12Bit ADC (FITS)
Exposure time per image / number of composites and sensitivity
32 x 180" Ha subs (Gain 139, Offset 21, Binning 1x1)
28 x 300" Ha subs (Gain 139, Offset 21, Binning 1x1)
13 x 600" Ha subs (Gain 139, Offset 21, Binning 1x1)
24 x 180" OIII subs (Gain 139, Offset 21, Binning 1x1)
28 x 300" OIII subs (Gain 139, Offset 21, Binning 1x1)
12 x 600" OIII subs (Gain 139, Offset 21, Binning 1x1)
Total Integration Time
11hrs 38mins
Calibration Frames
20 Darks, 20/20 Flats for Ha/OIII
Software
PixInsight 1.8 Core
Photoshop
SharpCap
DEEP SKY
STARSCAPE
SOLAR SYSTEM
EVENTS
