Celestial hemisphere:  Northern  ·  Constellation: Serpens (Ser)  ·  Contains:  Sh2-36
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Sharpless2 36 LRGB and H-Alpha, Jerry Yesavage
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Sharpless2 36 LRGB and H-Alpha

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Sharpless2 36 LRGB and H-Alpha, Jerry Yesavage
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Sharpless2 36 LRGB and H-Alpha

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Description

Again looking for unusual targets in The Sky X I found this one. It led me back to reading the original papers on what these objects are.

https://en.wikipedia.org/wiki/Sharpless_catalog

Has all the references.

Turns out that when he did the original catalogs these were basically blobs of H-alpha whose size varied in relation to which arm on the Mikey Way they were on and how far away from us they were in that arm... the diagrams and tables are a monument to data processing before PCs.

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