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|Description:||M3 is a large cluster approximately 34,000
light years away and covers around 16 arc-min. of the sky. The FOV of
this image 12 x 18 arc-min., so the entire extent of the cluster is not
|Exposure Data:||5/26/2003. RGB: 3x10m, 3x10m, 3x10m. RGB binned
-10°C, 0.49 arc-sec./pixel.
|Processing:||Acquired via Sequencer in Maxim, reduced and
aligned in Mira. median combine, RGB combine in Maxim. RGB assembled
with curves, levels and other adjustments in Photoshop.
|Optical System:||12.5” Ritchey-Chretien @ F/9, ST-10XME NABG/CFW-8A
CCD camera, Paramount ME. AO-7 guided.
|Comments:||Raw FWHM was 2.1 arc-sec.