M 33 - HOO starless version (James E.)

M 33 - HOO starless version

Inspired by a starless SHO image of M33 by Russell Croman on his astrophotography web page, this is a scaled down HOO version made with more modest equipment. There are many interesting loop-type nebula and OIII areas. The largest HII region is NGC 604 which is approx 1500 light years in diameter and one of the largest HII regions in the entire Local Group - this compares with the Tarantula Nebula at an estimated 1800 light years across and is considered the largest visible HII region in the Milky Way.

Revision D is a crop and highlights several of the interesting large loop-type nebula of which several must be well over 1000 light years across. This revision is also posted as a separate image due to the unique structures only seen in close up.

Imaged over two nights: Nov 14, 18, 2021.

Final
Original
D
E
F

D

Description: Crop of interesting region

Uploaded: ...

E

Title: Ha_starless

Uploaded: ...

F

Title: OIII_starless

Uploaded: ...

The refractors!
NOVAC
ZWO ASI2600MM Pro
Narrowband imaging
N.I.N.A. Users

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Status	Basic failed
Started	...
Astrometry.net job	5241250
PixInsight job	n/a
PixInsight queue size	n/a
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