|
Date: |
August, 2008 |
|
Location: |
Elizabeth, CO. Mag 5.5 skies, alt ~6500 ft |
|
Telescope: |
16" f/4.9, f/9.8 Newtonian, Pegasus Optics
primary |
|
Mount: |
MI-500 w/ Astrophysics AP1200 GTO computer
control |
|
Exposure Duration: |
Luminance = total ~360 mins (6 hrs) = 30
x 8 min subexposures at f/4.9, 30 x 8 min supexposures at f/9.8,
-15 deg C
Color = total 90 mins = 9 x 10 min subexposures,
-15 deg C |
|
Imager: |
SBIG ST-10XME for luminance, ST-2000XCM for
color |
|
Filtration: |
Custom Scientific luminance filter mounted
after 3" Keller/Wynne coma corrector |
|
Guiding: |
Normal self-guiding |
|
Seeing: |
~1.5" - 2" |
|
Comments: |
Luminances collected in Maxim. Subs median
combined in sets of three, medians then summed. f/9.8 sum 2 x
2 binned, registered and added to f/4.9 sum in Maxim, to give
approximate 6 hr luminance. Deconvolution/DDP/sharpening in CCDStack.
Color images collected in Maxim, calibrated in CCDOps. Color
conversion in Maxim, color subs median combined in two sets of
three, medians then summed, colorizing image created in Maxim.
Color and luminance data registered in Registar and final LRGB
assembly in Corel's PhotoPaint 12 using LAB |
