NGC6946_2010-08-11

Galaxies - NGC 6946

R.A.: 20h 34m 52s
Dec.: 60° 09' 14''
Mag.: 9,6

NGC 6946, (also known as the Fireworks Galaxy and Arp 29), is an intermediate spiral galaxy about 22 million light-years away, on the border between the constellations Cepheus and Cygnus. It was discovered by William Herschel on September 9, 1798. NGC 6946 is highly obscured by interstellar matter of the Milky Way galaxy, as it is quite close to the galactic plane. Nine supernovae (SN 1917A, SN 1939C, SN 1948B, SN 1968D, SN 1969P, SN 1980K, SN 2002hh, SN 2004et, and SN 2008S) have been observed in NGC 6946.

© Wikipedia

NGC 6946 – Fireworks Galaxy

Date/time: 12.08.2010 01:15 to 12.08.2010 04:15
Az./Alt. positions: 341° / 71° to 317° / 51°
Ambient conditions: 20°C, clear sky, transparency 5/5, seeing 5/5
Location: Villa Tatti, Tuscany, Italy

Equipment:
Telescope: Deltagraph 300mm f/3.3
Mount: CGE
Camera: SXVF-M25C
Guiding scope: Orion short tube 80mm f/5
Guiding camera: ATIK 16IC
Filters: No

Acquisition:
Software: Maxim DL 5
FOV, Image scale: 62.5 x 54.8 arcmin, 1.62 arcs/pixel
Sub-exposures: 1 h 54 m (38 x 3 min) light frames
No darks, 100 bias, 50 x 10 ms flats

Processing:
Images Plus 3.75: Calibration of light frames with bias and flats, DDP
Maxim DL: Stacking of calibrated frames with SDMask, color balance R85:G100:B120
CS3: Curves and Levels, GradientXterminator, selective Smart Sharp on galaxy core and arms, color enhancement using Gabanys method, noise reduction with Noiseware Professional.

Comments:
I would have expected more details from the galaxy, which was quite difficult to process.

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Information

Filename: galaxies/ngc6946_2010-08-11_full.jpg
Filesize: 3567475 Kb
Download limit: unlimited

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