Imaging telescope or lens: APM LZOS 130/780 f/6 LW CNC II 130mm APO
Imaging camera: FLI ML16200
Mount: Takahashi EM-200 Temma2
Guiding telescope or lens: Orion Deluxe 50mm MiniGuider
Guiding camera: Orion SSAG
Focal reducer: Riccardi Model 1 1.0x Flattener
Integration: 11.7 hours
Mean SQM: 21.59
Astrometry.net job: 1687524
RA center: 308.703 degrees
DEC center: 60.153 degrees
Pixel scale: 1.552 arcsec/pixel
Orientation: 177.813 degrees
Field radius: 0.339 degrees
NGC 6946 (Fireworks Galaxy) with Supernova 2017eaw in the strong upper arm at about 1 o’clock. That is the 10th supernova going off in this galaxy in the last 100 years, leading to its common name. In contrast, the Milky Way is only good for one per century. The face-on galaxy is classified as an intermediate spiral starburst galaxy. It is about one-third of the size of the Milky Way and is at 22 million light-years distance in Cepheus and Cygnus.
This 11.7 hr HaLRGB was collected during three nights (6/24, 7/22, 7/29/2017) at a very dark site in Pinnacles National Park, CA (Bear Gulch Users Area on the East side) with SQM readings as high as 21.80 (a fellow imager got 21.90 at one point that night).
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