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Cassiopeia widefield around the "Interstellar Shell" GSH 122+02-77 and SNR G126.2+01.6, Göran Nilsson
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Cassiopeia widefield around the "Interstellar Shell" GSH 122+02-77 and SNR G126.2+01.6

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Cassiopeia widefield around the "Interstellar Shell" GSH 122+02-77 and SNR G126.2+01.6, Göran Nilsson
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Cassiopeia widefield around the "Interstellar Shell" GSH 122+02-77 and SNR G126.2+01.6

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Description

With my dual-RASA rig I recently stumbled upon some mysterious bluish structures in Cassiopeia (https://www.astrobin.com/cnvp2s/), which turned out to be a never before imaged "Interstellar Shell" GSH 122+02-77 (http://simbad.cds.unistra.fr/simbad/sim-basic?Ident=GSH+122%2B02-77&submit=SIMBAD+search), whatever that could be. I have now processed what my piggybacking Samyang 135 was capturing the same night, allowing me to show these structures in relation to some of the more iconic objects in Cassiopeia, including the Ghost and several Sharpless objects. I also realized I could add a second panel (to the right) that I had in store to make a two panel mosaic that also includes the rarely imaged supernova remnant G126.2+01.6.

So the mosaic is based on two Samyang 135 images to which I have added ca 50% RASA data to the main features.

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