Galaxy
NGC 6946, Fireworks Galaxy

Object :	NGC 6946, Fireworks Galaxy
Coordinates/Direction :	RA: 20h34m, DEC: +60^o09'
Object size :	16.2' x 11.2'
Object magnitude :	9.6
More to know :	Wikipedia: https://en.wikipedia.org/ wiki/ NGC_6946

NGC 6946 galaxy crop, 2024-04-11

(Click on image and get one in full resolution in a new window)

Date :	2024-04-11
Time (UT) :	20:07 to 23:52

Mount :

SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019)

Guide :

QHY5 camera with 200 mm f/3.5 lens

Lens/telescope :	Pentax 645 300 mm ED f/4 (medium format lens)
Corrector/Barlow :	-
Field (FOV) :	6.8x4.5^o (full frame) before crop

camera :	Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature:	About 6^o C above surrounding temperature
Film/CCD :	Raw, Cr2
Filter :	none

Control system:

Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux)

Exp. time :	149x60 seconds, iso1600, dithering mode
Image process tool :	Siril, Gimp, Irfanview
Processing :	synthetic bias, flat, photometric color calibration
Weather :	clear, temperature +12^o C

Site :

Sweden, Stockholm, Hagsätra. Bortle 9
Free view Az: 20^o-90^o, 165^o-185^o, La: 20^o-55^o

Comment :

The galaxy NGC 6946 or Fireworks Galaxy, it isn't far away, 25 millions ly as our other neighbors. It has some interesting neighbors which can be seen here on the plate solved image: NGC 6946, plate solved by Astrometry.net. The open cluster NGC 6939 is one of them. Great weather this evening and night. I could get 2.5 hours of exposure. Maybe this was the last night this season for astrophotography.

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Galaxy NGC 6946, Fireworks Galaxy

NGC 6946 galaxy crop, 2024-04-11

Galaxy
NGC 6946, Fireworks Galaxy