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NGC 2237 - The Rosette Nebula

From the author of   Sizing Up The Universe

Click here for Hertzsprung-Russell diagram.

19:20 EST Feb 20, 2022.
ZWO ASI2400MC-Pro on 10" Ritchey-Chretien at f/9.
60 min unguided 5-minute LiveStacks of 30-second exposures taken with L-Extreme filter.

Images processed in PixInsight

21:29 EST Jan 19, 2006.
Starlight Express SXV-H9 on 4" Tak FSQ refractor at f/5.
Hα = 160 min (guided 10-minute subexposures).
OIII = 110 min (guided 10-minute subexposures).

Click here to see an image of the same area assembled from R and B frames from the Digitized Sky Survery.

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