Celestial hemisphere:  Northern  ·  Constellation: Orion (Ori)  ·  Contains:  PK197-02.1  ·  Sh2-271  ·  Sh2-272
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Sh2 271-272 HA RGB, Jerry Yesavage
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Sh2 271-272 HA RGB

Equipment

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Acquisition details

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Description

This image is a 2-Fer (for non-English primary language, that means two for the price of one).

From GalaxyMap:

Sh 2-271 contains the infrared cluster [BDS2003] 82 and is embedded in a 9800 solar mass molecular cloud. This is an HII region, not a planetary nebula as is sometimes reported.

Sh 2-271 and the much fainter Sh 2-272 are both part of the Avedisova star formation region 197.77-2.31. She concludes that these nebulae are ionised by two uncatalogued stars: MFJ Sh 2-271 1 (O9 V) and MFJ Sh 2-272 3 (B1 V).

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

I have been on a project for several years now to image all the Sharpless2 Objects that I can see from my location near San Francisco. I chose these because they are visible in light polluted areas. These objects generally represent left over Hydrogen along the edge of the Milky Way that has gotten molded into interesting shapes.

There are 313 Sh2 objects and those below 70 and above 283 are generally too low on the horizon for me to image... this leaves me 213 that are feasible... and I have imaged all of these but 20. 13 of these are too big for my system. So 7 to go: (226, 228, 262, 269, 278, 279 and 282).

Many were taken with my old Tak 180 ED, which had a wide field of view, but was replaced with my Stellarvue 130, which is more narrow field.

This is my collection:

Sharpless2

Please note there is also a Sharpless2 Group with now more than 1000 examples.

Hope you enjoy these obscure but interesting objects...

Comments

Revisions

  • Sh2 271-272 HA RGB, Jerry Yesavage
    Original
  • Sh2 271-272 HA RGB, Jerry Yesavage
    B
  • Sh2 271-272 HA RGB, Jerry Yesavage
    C
  • Sh2 271-272 HA RGB, Jerry Yesavage
    D
  • Sh2 271-272 HA RGB, Jerry Yesavage
    E
  • Final
    Sh2 271-272 HA RGB, Jerry Yesavage
    F

B

Description: Color processed 500x500 pixel standard crop.

Uploaded: ...

C

Description: Trying to enhance structure but very bright.

Uploaded: ...

D

Description: As per David's suggestion, destaturate... HA very very bright when added to Red channel.

Uploaded: ...

E

Description: HDRM repeated

Uploaded: ...

F

Description: De-saturate sponge judiciously applied....

Uploaded: ...

Sky plot

Sky plot

Histogram

Sh2 271-272 HA RGB, Jerry Yesavage

In these collections

Sharpless2 Objects