|
|
|
|
| Classification: |
Spiral Galaxy/ Fireworks Galaxy |
| Constellation: |
Cepheus / Cygnus |
| Object Location: |
Ra 20h 35m 14s Dec +60° 12’3 (current) |
| Size & Distance: |
11.5 x 9.8 Apx. 22.5 million light-years |
|
| Date & Location: |
8-23-2014 Palomar Mountian |
| Exposure: |
LRGB 90,90,90,90, 9x10 ea., bin 1x1, 6h Total. |
| Optics: |
Telescope Engineering Company APO180FL @ f/5.23 using an Astro-Physics TCC160 F/L 940mm |
| Mount: |
Astro-Physics 1200 GTO / ATS 10x36 Pier |
| Camera: |
FLI-MLx694 @-20c / CFW2-7 / FLI-Atlas focuser / Guided by SBIG ST-I / w OAG. |
| Filters: |
Astrodon G2 LRGB |
| Software: |
MaxImDL 6, Photoshop CS5 |
|
| Notes: |
Sky conditions: Average seeing, calm winds, low 60’s
Image Field of view is 29.5 x 25.4 arcmin.
________________________________________________
NGC 6946, (also known as the Fireworks Galaxy, Arp 29, and Caldwell 12), is an intermediate
spiral galaxy about 22.5 million light-yearsaway 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.
Nine supernovae (SN 1917A, SN 1939C, SN 1948B, SN 1968D, SN 1969P, SN 1980K,
SN 2002hh, SN 2004et, and SN 2008S) in the last 60 years or so, have been observed in NGC 6946.
.
.
|
|
|
