|
Object |
NGC 7331 |
|
Coordinates |
RA:
22 37 12.4 Dec: +34 23 40 Camera PA: 0.1 |
|
Imaging
by |
Greg
Morgan |
|
Date(s) |
August 24
& 25, 2009 |
|
Optics |
RCOS
12.5 inch f/9 Ritchey-Chrétien with a
2,857mm focal length |
|
Mount |
Paramount
ME |
|
Camera |
Apogee
Alta U16M, 9 micron 4098 x 4098 pixels |
|
Guiding |
Off-axis
with the Astrodon Monster MOAG and SBIG ST-402XM |
|
Field Scale |
0.64 arcseconds / pixel |
|
FOV |
29 x 22
arc minutes, N is to the right, E is up. |
|
Chip Temp |
-15 C |
|
Filter(s) |
Astrodon LRGB
Gen 2 |
|
Location |
Sierra
Remote Observatories, Shaver Lake California 4,610 feet |
|
Exposure(s) |
L = 15, R
= 5, G = 5, B = 5
x 1800 seconds (15 Hours
Total) |
|
Binning |
1x1 |
|
Camera control |
MaxIm DL 4 /
CCDAutopilot 3 |
|
Processing
software |
CCDStack, Photoshop CS2 |
|
Image notes |
The first
night was dedicated to Lum data. The second night, RGB
data were collected. The total processing time on
Wednesday the 26th was less than 5 hours. I think that
is a record for the fewest total hours spent processing.
There are a few color noise problems with the stars from
processing but, oh well.
I have included
a full frame image showing the full 43 arc
second square FOV. Note the extensive dust that
surrounds NGC 7331 to the west (below). Click
here for a 800 x 800 pixel
full FOV image ~ 0.7 MB. Click
here for the full
resolution 4098 x 4098 pixel image ~16.7 MB |
