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|Exposure Data:||3/18/2004. LRGB: 40x3m, 10x3m, 10x3m,
10x3m. RGB binned 2x2. -20°C, .59 arc-sec./pixel.
|Processing:||Acquired via Sequencer II and CCDSoft, reduced,
aligned and combined in Mira, L 30xRL
in AIP4WIN, DDP
in Maxim, LLRGB combine, curves, levels and other processing in Photoshop.
|Optical System:||14.5” Ritchey-Chretien RCOS Truss @ F/6.4,
CCD camera, Paramount ME. AstroDon filters with IR-filtered L.
Unguided and dithered 3 arc-sec.
|Comments:||Seeing around 3 arc-sec, deconvolved to 2.4
arc-sec. Acquired using an experimental version of Sequencer II, which
included an automatic meridian flip and unguided dithering. Actual
exposure sequence was 5R, 5G, 5B, 40L, 5B, 5G, 5R. The meridian flip
occurred around the middle of the L sequence.