Celestial hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  10 Gem  ·  11 Gem  ·  12 Gem  ·  13 Gem)  ·  13 mu. Gem  ·  7 Gem)  ·  7 eta Gem  ·  8 Gem  ·  9 Gem  ·  Calx (μ Gem  ·  Gem A  ·  HD253134  ·  HD253153  ·  HD253178  ·  HD253179  ·  HD253210  ·  HD253236  ·  HD253238  ·  HD253270  ·  HD253300  ·  HD253302  ·  HD253321  ·  HD253322  ·  HD253323  ·  HD253339  ·  HD253341  ·  HD253342  ·  HD253363  ·  HD253364  ·  HD253365  ·  And 290 more.
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SHO IC443 Jellyfish nebula, Chung Hyun Lee
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SHO IC443 Jellyfish nebula

Getting plate-solving status, please wait...
SHO IC443 Jellyfish nebula, Chung Hyun Lee
Powered byPixInsight

SHO IC443 Jellyfish nebula

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Description

I have used Astronomik MaxFR 6nm SHO filters and am pretty satisfied. 
The apparent magnitude of the two relatively bright stars, η and μ Geminorum, are 3.31 and 2.87, respectively, but I can't see any halo with any bands for these two stars.  
Also, those narrow band filters can effectively suppress the moonlight even under around 60% of the avg. Moon phase.

Thanks to F/2 of RASA 8, the nebula structures can be obtained with a relatively short integration time.

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SHO IC443 Jellyfish nebula, Chung Hyun Lee