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Scope: C8 f/7.5;
Location: Laguna Mountains, CA; 19 May, 2007; Camera: Artemis285
Exposure: 8 x 360 sec Luminance exposures with IR Block Filter (bin 1x1);
5 x 180 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 1392x1044.
North is up in this image. NGC 5247 is a multi-armed spiral galaxy in the
constellation of Virgo. It's distance from Earth is not well known - some
estimates put the distance at 50 million light years. Horizontal FOV is about
19'
Image Center
approximately - Equatorial 2000: RA: 13h 38m 03s Dec: -17°53'05"
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