| Date: | April, May 2007 |
| Location: | Elizabeth, CO. Mag 5.5 skies, alt ~6500 ft |
| Telescope: | 16" f/4.9 Newtonian, Pegasus Optics primary |
| Mount: | MI-500 w/ Astrophysics AP1200 GOTO computer control |
| Exposure Duration: |
Luminance = total 144 min = 18x8 min subexposures, -15 deg C Color = total 60 mins = 6x10 min subexposures, -15 deg C |
| Imager: | SBIG ST-10XME for luminance, ST-2000XCM for color |
| Filtration: | SBIG luminance filter mounted after 3" Keller/Wynne coma corrector |
| Guiding: | AO-L guided at ~7.5 Hz |
| Seeing: | ~3.5" |
| Comments: | Luminances collected in Maxim. Subs median combined in sets of three, medians then summed. 50% DDP in Maxim, Curves adjustment, saved as 16-bit TIF. Read into CCDStack, performed 100 iterate PC deconvolution. Color images collected in Maxim, calibrated in CCDOps. Color conversion in Maxim, color subs median combined in two sets of three, medians then summed. 50% DDP in Maxim followed by smoothing to create the colorizing image. Color and luminance data registered in Registar and final LRGB assembly in CCDStack |