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Object
............................................ NGC 6946 - Fireworks
Galaxy
Constellation ............................... Cepheus & Cygnus
Distance + Ap. Magnitude......... 22.5 million Light years (6.9 Mpc)
- 9.6
RA / DEC
.....................................
20h:34m.52sec /
+60° 09m.14sec
Date + Time ............................... 29-30/5/15 &
12-13/5/2015 - 20:00 UTC
Location .................................... "Nunki
Observatory" - Skiathos
Optics .........................................
Officina Stellare Advanced RILA 400
f/5.25
Tools .......................................... The Sky
X
Camera .....................................
SBIG STXL11002
with
FW8G-STXL (Astrodon filters)
Exposure Time.......................
Luminance: 18 X 600sec RGB: 10 X 600sec
More Details ...........................
Environment Temperature : 24oC Camera Temperature -30οC
Mount ....................................... Paramount
ME
Guiding .................................... Self guided
Processing Details ................ Photoshop ,
Maxim
Notes ........................................
Weather: Clear - Transparence: Medium - Humidity : 65-85 %
Target details ......................... NGC
6946, (also known as the Fireworks Galaxy, Arp 29,
and Caldwell 12), is anintermediate spiral galaxy about 18
million light-years away, in 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. The diameter of the
galaxy is approximately 40,000 light-years or just about a third of
the size of the Milky Way. |
