IC443 - The Jellyfish Nebula - HOO

[Buzzard75]

IC443 is The Jellyfish Nebula in the constellation Gemini. It can be found near the star Propus (right), which makes up part of the left foot (our right) of the twin Castor. The star on the left of the image is Tejat Posterior. The other emission nebula in the image on the left is Sh2-249. There is also a reflection nebula in this image, IC444, but does not show up well with narrowband filters as well as part of the open cluster Collinder 89. This image was a late season target and I only gathered about five hours of data in just two nights this past weekend. It is transiting the meridian earlier and earlier and I lose it behind a tree in my front yard a couple hours later. Still, for just under five hours of data it's not a bad image.

ASI183MM Pro, Gain 111, offset 10, temp -10C
William Optics Redcat 51
Chroma 3nm Ha and OIII 31mm filters
iOptron CEM40EC
ZWO Mini guide scope and ASI290MM mini for guiding
28x300s Ha, 31x300s OIII
HOO (PixelMath RGB channel combination Ha, .45*Ha+.55*OIII, OIII)
Bortle 5-6 skies
Captured in APT, processed in Pixinsight and Photoshop