Celestial hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  HD20509  ·  HD20750  ·  HD20824  ·  LBN 685  ·  Sh2-203
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Sh2 203, Jerry Yesavage
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Sh2 203

Getting plate-solving status, please wait...
Sh2 203, Jerry Yesavage
Powered byPixInsight

Sh2 203

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Description

Another Sharpless2 object that is seen in the context of the surrounding H-alpha clouds thanks to the CMOS chip and stretching optimized with GHS. 

GHS Forum Discussion

Followed GHS Dave's suggestion to represent Hb as 20% of Ha as Blue in the coloring of this image.  I think it looks better, but hard to tell?  
(C is without the Blue). 
Nice discussion on Cloudy Nights.

From GalaxyMap:

This extended diffuse HII region may be ionised by the B class star LS I +55 47. Russeil combines Sh 2-203 with the better known nebula BFS 31 into one star formation region.

Avedisova also combines Sh 2-203 and BFS 31 into the star formation region 143.51-1.86 and in addition adds the HII region [url=http://simbad.harvard.edu/simbad/sim-id?Ident=[ZPT98]%20143.83-01.56]Mol 5[/url] and numerous other infrared and radio sources.

GENERAL NOTE ON SHARPLESS2 OBJECTS>>>>>>>>>>>>>

There are 313 Sh2 objects.  All now imaged.

This is my collection:

Sharpless2

Wide-Angle Hydrogen Alpha Nikon Image Sh2 79-171

Please note there is also a Sharpless2 Group with now more than 2700 examples.

Sharpless2 Group

Other useful links include:

Gary Imm's Collection

GalaxyMap's Collection

The Sharpless Catalog

The MDW H-alpha Sky Survey

Reiner Vogel's detailed observing catalog

Hope you enjoy these obscure but interesting objects...

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