|
Object |
M27 The
Dumbbell Nebula |
|
Coordinates |
RA: 19 59
34.4 Dec: +22 43 16 PA:
11 |
|
Imaging
by |
Greg
Morgan |
|
Date(s) |
July 11 -
12, 2008
|
|
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 |
0.75
degrees square, N is up, E is to the
left. |
|
Chip Temp |
-15 C |
|
Filter(s) |
Astrodon LRGB
Generation 2 |
|
Location |
Sierra
Remote Observatories, Shaver Lake California 4,610 feet |
|
Exposure(s) |
L 9
x 900 , R 9 x 900, G 6 x 900, B 8 x 900 seconds (8 Hours
Total) |
|
Binning |
1x1 |
|
Camera control |
MaxIm DL 4 /
CCDAutopilot 3 |
|
Processing
software |
CCDStack, Photoshop CS2 |
|
Image notes |
LRGB only, no
Ha data. The image below is full frame, 0.75 degrees
square. The near full moon was out for most of both
imaging nights. This was also a time when California
wild fires filled most of the state with a lot of smoke.
The seeing monitor indicated the seeing was between 2.0 and
2.5 for both nights. This is first light with the Astrodon Generation 2 filters. |
