| Date: | August, 2007 |
| Location: | Elizabeth, CO. Mag 5 skies, elevation ~6500 ft |
| Telescope: | 16" f/4.9 Newtonian, Pegasus Optics primary mirror, working at f/9.8 |
| Mount: | Mathis Instruments MI-500 w/ AP1200 computer control |
| Exposure Duration: |
Luminance = Total 144 min (2.4 hrs), 18x8 min subexpsures Color = Total 60 min, median of fifteen 4 min subexposures |
| Imagers: |
Luminance = SBIG ST10XME w/ AO-L Color = SBIG 2000 XCM w/ AO-7 |
| Filtration: |
Luminance = SBIG research grade luminance filter mounted in front of 2x TeleVue Powermate to go to f/9.8. Image resampled down to 75%, providing final image scale of f/7.4 Color = SBIG research grade luminance filter mounted in front of 2" Lumicon coma corrector. Coma corrector mounted to front of AO-7 |
| Guiding: |
Luminance = AO-L guided at ~7 Hz Color = XCM w/ AO-7 running at ~ 3 Hz |
| Seeing: | Average, ~3"-3.5" |
| Comments: |
Luminance = Calibrated using dark and flat frames, median combined in sets of three, medians summed using Maxim. 75% DDP/Curves adjustment applied using Maxim. 25 iterate PC deconvolution in CCDStack Color = Each sub-exposure calibrated using dark and flat frames, then immediately converted to RGB. Color sub-exposures median combined. DDP/histogram adjustment applied in Maxim. Final LRGB assembled in CCDStack |