Jellyfish Nebula – IC 443

Click to enlarge

Click to enlarge

Common Name: Jellyfish Nebula
Formal Name: IC 443   (SH2 – 248)
Date: 6/8/2015
Constellation: Gemini
Location: BrewSky Observatory, Casa Grande
Hardware: Takahashi Sky90 on Paramount, SBig ST2000XM Camera/Filter Wheel

unguided exposures

Temperature: -15C
Bin Mode: 1×1
Images: (13) x 10 minute Red exposures    2.5 hr
(12) x 10 minute Green                  1.67 hr
(12) x 10 minute Blue                     2.5 hr
(30) x 10 minute HAlpha                1.5 hr
(16) x 10 minute Lum                     2.7 hr
Total Time =  10.2 hours
Synthetic Luminance = integration RGB + Ha + Lum)
Sky Flat fields
Processing: The RGB portion is processed as usual, then combined with a Synthetic Luminance which is the integration of R, G, B, Halpha, and Luminance exposures.
Reduced in Maxim, Aligned/Stacked/Processed in PixInsight
Notes: IC 443 (also known as the Jellyfish Nebula and Sharpless 248 (Sh2-248)) is a Galactic supernova remnant (SNR) in the constellation Gemini. On the plan of the sky, it is located near the star Eta Geminorum. Its distance is roughly 5,000 light years from Earth.

IC 443 may be the remains of a supernova that occurred 3,000 – 30,000 years ago. The same supernova event likely created the neutron star CXOU J061705.3+222127, the collapsed remnant of the stellar core. IC 443 is one of the best-studied cases of supernova remnants interacting with surrounding molecular clouds. – Wikipedia

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