The emission nebula of NGC 4236 (Jon Talbot)

Celestial hemisphere: Northern · Constellation: Draco (Dra) · Contains: NGC 4236

The emission nebula of NGC 4236, Jon Talbot

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The emission nebula of NGC 4236

Link: http://www.starscapeimaging.com/NGC%204236/NGC%204236.html

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The emission nebula of NGC 4236

Link: http://www.starscapeimaging.com/NGC%204236/NGC%204236.html

NGC 4236 is a relatively faint (mag 10.3) barred spiral galaxy we see on an oblique angle to us. It's located in the constellation Draco. NGC 4236 is part of the M81 local group of galaxies which also includes M81 and M82. It lies roughly 11.7 million light years distant. I've seen many nice images of NGC 4236 but a limited few highlighting the emission nebula within the galaxy. There are many beautiful emission nebula (highlighted in pink) which show quite a bit of nice detail on the outer edges of the galaxy. Some of them are huge in comparison to the size of the galaxy. Some are also intermixed with bright blue star star forming regions. I've attached a continuum subtracted Ha image where all the starlight has been removed so you can see the extent of the areas of hydrogen emission. NGC 4236 is full of them. In the attached annotated image there are also many catalogued and uncatalogued faint galaxies in the background. A nice galaxy cluster seems to be just to the right of the top part of the galaxy. At least one of these background galaxies PGC 39369 seems to be actually a large emission nebula within NGC 4236. The full res image resolution is .64 arc seconds/pixel so I hope this image gives you one of the highest resolution views you have seen of these emission nebula. This project spanned two seasons, May and Jun of 2022 and Dec 2022-Feb 2023.

Continuum subtracted Ha image

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Astrometry.net job	8684440
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The emission nebula of NGC 4236

The emission nebula of NGC 4236

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The emission nebula of NGC 4236

The emission nebula of NGC 4236

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