|
Object |
NGC 281 |
|
Coordinates |
RA:
00 52 45.7 Dec: +56 37 07 Camera PA: 4.0 |
|
Imaging
by |
Greg
Morgan |
|
Date(s) |
October
22 - 26, 2008; Processed August 26 - 28, 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 |
38 x 38
arc minutes, N is to the left, E is down. |
|
Chip Temp |
-25 C |
|
Filter(s) |
Astrodon Ha,
OIII, SII narrowband 5 nm |
|
Location |
Sierra
Remote Observatories, Shaver Lake California 4,610 feet |
|
Exposure(s) |
Ha = 24,
OIII = 24, SII = 10
x 1800 seconds (29 Hours
Total) |
|
Binning |
1x1 |
|
Camera control |
MaxIm DL 4 /
CCDAutopilot 3 |
|
Processing
software |
CCDStack, Photoshop CS2 |
|
Image notes |
This
image is limited to narrowband channels only. No RGB
has been added. The NB filters are 5nm each; Ha, OIII
and SII. A total of 74 subframes of 30 minutes each
were collected in October 2008. I ended up using only
58 subframes, 29 hours of the 37 hours of data collected. |
