(Click on image for full size version)
|Description:||This planetary nebula is very bright and
relatively small, measuring 42 arc-sec. in diameter. It has also been
called the Clown Face Nebula. The central star is magnitude 9.
|Exposure Data:||2/22/2003. RGB: 6x5m, 6x5m, 6x5m @ 1x1
|Processing:||Acquired via Sequencer, reduced and aligned in
Mira, sub-frames and calibration frames combined in Sigma, RGB: 3x
CCDSharp, RGB combined 1.0:0.9:1.4 in Maxim, 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 - 2.6 arc-sec. Deconvolved
to 1.7 arc-sec.