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IC1871 in Cassiopeia

RA = 02h 57m;, Dec = +60deg 40min

Date & Site:

Imaged on 09/28/13; Runningman Observatory, Carlsbad, CA

Clear; excellent seeing


Telescope: TEC 140 f/7 refractor (fl 980mm)

Mount: Losmandy G-11 with Gemini
Camera: ST-10XME; CFW10 with 3 nm Astrodon filters;

Hutech Off-Axis Guider


Exposures: 135 min each of Ha; OIII and SII for a total of 6 hrs 45 min

Color mapped by assigning Ha to Green; OIII to blue and SII to Red

FOV = 52 x 35 arc minutes

IC1871 an emission nebula located in the Eastern portion of the larger object known as the Soul Nebula (SH2-199, LBN 667 or IC 1848). Narrowband filters bring out the ionized hydrogen and sulfur to create the brilliant yellow, red, and orange hues with ionized oxygen appearing as blue.

6,500 light years away

Reduced to 60% of original

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