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Emission Nebula IC 410




Scope: ES MN152 152 mm  Mak-Newt  @  f/4.8, Dos Picos Park, Ramona, CA,   12 December 2010  Camera: ST8300M

Exposure:  13 x 9  min H-Alpha exposure (1x1),  9 x 5 min H-Alpha exposure (2x2), 7 x 4 min RGB exposures (2x2).

Processing: Images were captured with CCDSoft. Aligned/stacked and dark subtracted in Astroart ; Sigma Combine method was used for stacking subs.  All channels were scaled and rough color balanced in Astroart.  Central Gradient removal  was done in Astroart. Channels were co-registered in Astroart.   The 9 minute H-Alpha  exposures and the 5 minute 2x2 bin H-Alpha exposures were combined  for the main luminance construction with level adjustments and curves to bring out object features.  LRGB combine was done in Photoshop. Saturation adjustments were selectively applied excluding the brighter areas. Bright area exclusion on some portions of Levels, Curves, and Saturation was to avoid core over brightening and out of Gamut.  A light background noise reduction was applied in PixInsight LE (SGBNR).   Selective sharpening was performed.. Final touches and color balance in Photoshop. Final Image size is approximately 3352x2532 (resized to 2800x2100).

All exposures in this image were guided; North is up in this image. IC 410 is an emission  nebula in Auriga. The two nebula features in the upper left resemble "Tadpoles". This nebula region is about 12,000 light years distant from Earth. The size of the nebula is about 100 light years across; the Tadpoles are about 10 light years long. This image replaces an earlier image that can be seen in the Archives here. The Horizontal FOV is 88'.

Image center is located approximately - Equatorial 2000: RA: 05h 22m 46s Dec: +3325'11"




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