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Scope: C8 f/6;
Location: Dos Picos Park, Ramona, CA; 6 May 2007; Camera: Artemis285
Exposure: 10 x 360 sec Luminance exposures with IR Block Filter (bin 1x1);
6 x 120 sec RGB (bin 2x2)
Processing: Images were captured in Artemis Capture (as FITs). Aligned/stacked
in Registax 4 and saved as FITS. Luminance and Color channels were numerically
scaled and color balanced in Astroart. Channels were co-registered
in Astroart. Central Gradient removal was performed on the L,R,G,B stacked
masters. The IR Block exposure was used as the luminance channel. Curves and
Levels applied in Photoshop to optimize object features. Final LRGB
combine was done in Photoshop using Luminance Layering (or LLRGB). Selective sharpening with layer mask was applied to
galaxy features. Light noise reduction was performed using PixInsight
LE. Final touches were done in Photoshop. Final
Image size is approximately 1392x1040.
North is up in this image. This grouping of galaxies is sometimes called
the Draco Trio as they are located in the constellation of Draco. From left to
right, the three predominant objects are NGC 5985, NGC 5982, and NGC 5981. Horizontal FOV is about
25'
Image Center
approximately - Equatorial 2000: RA: 15h 38m 40s Dec: +59°21'22"
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