|
Object |
NGC 6822
Barnard's Galaxy |
|
Coordinates |
RA:
19 44 56.6 Dec: -14 48 23 Camera PA: 2.0E |
|
Imaging
by |
Greg
Morgan |
|
Date(s) |
August 1 to
8, 2010 |
|
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 |
Cropped
to 29' x 22', N is
up, E is to the left. |
|
Chip Temp |
-15 C |
|
Filter(s) |
Astrodon LRGB |
|
Location |
Sierra
Remote Observatories, Shaver Lake California 4,610 feet |
|
Exposure(s) |
L = 8, R = 4, G = 3, B = 7 x 1800 seconds (11 Hours
Total) |
|
Binning |
1x1 for all
filters |
|
Software |
CCDAutopilot 4,
MaxIm
DL,
TheSky 6, CCDStack 2
with
CCDIS-p
registration, Photoshop CS4,
Russell
Croman's 64-bit GradientXTerminator, 64-bit plug-in for Neat
Image Pro. |
|
Image notes
|
Deconvolution was done with 25 iterations and 50 iterations
to reach a stellar profile of 2.0 arcseconds for each master
channel in CCDStack 2 prior to color combining. Final
processing was done in CS4.
|
