Imaging telescopes or lenses: William Optics Star 71 f/4.9
Imaging cameras: ZWO ASI183MC Pro
Mounts: Sky-Watcher EQ-6R Pro SynScan
Guiding telescopes or lenses: Agena Astro 50mm f/3.9 Guidescope
Guiding cameras: ASI224MC
Software: IDEIKI AstroPhotography Tool (APT) · Stark Labs Nebulosity 4.2 · Digital Photo Professional · Annie's Astro Actions V7 · Noel Carboni's Astro Tools for PhotoShop Noel Carboni Actions · PHD2 Guiding
Filters: Astronomik L2 UV/IR Cut
Dates:Oct. 4, 2019
Frames:Astronomik L2 UV/IR Cut: 39x180" (gain: 120.00) -15C bin 1x1
Integration: 1.9 hours
Darks: ~30
Avg. Moon age: 6.22 days
Avg. Moon phase: 37.79%
Bortle Dark-Sky Scale: 4.00
Mean SQM: 20.00
Mean FWHM: 4.50
Temperature: 7.50
Astrometry.net job: 2974720
RA center: 20h 34' 53"
DEC center: +60° 8' 56"
Pixel scale: 0.954 arcsec/pixel
Orientation: 181.402 degrees
Field radius: 0.382 degrees
Resolution: 2400x1600
Data source: Backyard
NGC 6946 (Caldwell12, PGC 65001, UGC 11597, Arp 29) - The Fireworks Galaxy is a face-on intermediate spiral galaxy with a small bright nucleus, in the constellation Cepheus . It is 25.2 million light years from Earth. Discovered by William Herschel on 9 September 1798, this well-studied galaxy has a diameter of approximately 40,000 light-years, about one-third of the Milky Way's size and it contains roughly half the number of stars as the Milky Way.
It is called the "Fireworks Galaxy" because it has an unusually high rate of supernovae production, with 10 discovered in the last 100 years, compared to our Milky Way galaxy, whose rate averages just one supernova event per century. This is the more remarkable as our Galaxy comprises twice as many stars
Comments