NGC6946 Fireworks Galaxy and SN2017eaw REPROCESSED

NGC 6946 (Fireworks Galaxy) with Supernova 2017eaw in the strong upper arm at about 00:30 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.

 

The data was collected during three nights 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).

 

Imaging telescope: APM LZOS 130/780 f/6 LW CNC II 130mm APO

Imaging camera: FLI ML16200

Mount: Takahashi EM-200 Temma2

Guiding telescope: Orion Deluxe 50mm MiniGuider

Guiding camera: Orion SSAG

Focal reducer: Riccardi Model 1 1.0x FF

Software: PixInsight 1.8.5, TheSkyX, PS CS6

Filters: Astrodon 5nm Halpha, Astrodon Gen2E LRGB

 

8/23/17 Version REPROCESSED with DRIZZLE plus PI 1.8.5 Local Normalization, Large-scale Pixel Rejection and Photometric Color Calibration.

 

 

ngc6946HaLRGBps5DZ1

jpeg dyn-cropped from post 9/11/17

ngc6946HaLRGB_CR crop of ABIN 2019 2/3/19

ngc6946HaLRGB_CR crop of ABIN 2019-2020 5/14/20

smaller stars big and small

NGC6146-Fireworks-120222NXShrkCR 12/2/22

Done