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|Description:||This faint galaxy measures 0.4 x 3.3 arc-min. NW is up.
|Exposure Data:||2/7/2003. LRGB: 8x10m, 4x7m, 4x7m,
4x10m, RGB 2x2. -20°C,
|Processing:||Acquired via Sequencer, reduced and aligned in
Mira, sub-frames and calibration frames combined in Sigma, L: 10x RL in AIP4WIN,
gradient removal and RGB combined 1.0:0.9:1.0 in Maxim, LLRGB assembly,
curves, levels, mild USM other processing in Photoshop. 10 darks, 20
bias and 10 flats per filter used in calibration, also combined in Sigma.
|Optical System:||14.5” Ritchey-Chretien truss prototype by
RCOS @ F/9, ST-8E USB NABG/CFW-8A
CCD camera, AO-7 auto-guided, Paramount ME mount.
|Comments:||Seeing was 2.4 - 2.8 arc-sec. Deconvolved
luminance was 1.7 arc-sec.