Hemisphere:  Northern  ·  Constellation: Auriga (Aur)  ·  Contains:  21 sig Aur  ·  24 phi Aur  ·  IC 417  ·  M 36  ·  M 38  ·  NGC 1907  ·  NGC 1912  ·  NGC 1931  ·  NGC 1960  ·  Sh2-231  ·  Sh2-232  ·  Sh2-233  ·  Sh2-234  ·  Sh2-235  ·  Sh2-237  ·  The star σAur  ·  The star φAur
Getting plate-solving status, please wait...
Cosmic Marbles: Sh2-232 to M38, 



    
        

            Jeffrey K Lovelace
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Cosmic Marbles: Sh2-232 to M38

Getting plate-solving status, please wait...
Cosmic Marbles: Sh2-232 to M38, 



    
        

            Jeffrey K Lovelace
Powered byPixInsight

Cosmic Marbles: Sh2-232 to M38

Acquisition details

Dates:
Jan. 17, 2021
Frames:
Astrodon B 50mm square E Series: 47×120(1h 34′) -25°C bin 1×1
Astrodon G 50mm square E Series: 49×120(1h 38′) -25°C bin 1×1
Astrodon Hα 50mm round 5nm: 53×1200(17h 40′) -25°C bin 1×1
Astrodon O-III 50mm square 3nm: 51×1800(25h 30′) -25°C bin 1×1
Astrodon R 50mm square E Series: 47×120(1h 34′) -25°C bin 1×1
Astrodon S-II 50mm Square 3nm: 36×1800(18h) -25°C bin 1×1
Integration:
65h 56′
Darks:
23
Flats:
25
Bias:
50
Avg. Moon age:
4.31 days
Avg. Moon phase:
19.61%

RA center: 05h35m38s.10

DEC center: +35°4937.6

Pixel scale: 9.419 arcsec/pixel

Orientation: 2.160 degrees

Field radius: 3.075 degrees

More info:Open 

Resolution: 1920x1356

File size: 2.3 MB

Locations: Sierra Remote Observatories, Auberry, CA, United States

Data source: Own remote observatory

Remote source: Sierra Remote Observatories

Description

Data Acquisition from 2019-11-24 until 2021-01-17

DSO Color Mapping: Stars RGB, Nebulae Modified Hubble Palette

Original Image Scale: 4.00

Note: This scope is located at Sierra Remote Observatory. I personally configured and installed this scope and make regular trips to SRO to perform maintenance and upgrades. When not on site, I operate the scope nightly from home using a remote desktop application.

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This is a dynamic looking region of the constellation Auriga where spherical nebulas appear to be shot toward each other. The image includes the nebulae Sh2-232, Sh2-235, Sh2-231, Sh2-234 and LBN 796, among others, and the open star clusters M38 and M36.

The eyeball looking nebula (Sh2-232) has been mistaken for a planetary nebula, but none of the round or semi-spherical objects in this field of view are actually classified as PNs (per Galaxy Map and SIMBAD). In fact, the big fuzzy ball in the lower left center (right above cluster M36) does not seem to have any designation at all and is merely a part of the greater nebula LBN 796.

A 2012 paper suggests that these unusual forms are all part of an expanding shell, the result of an ancient supernova. In turn, this shell exists within a larger molecular cloud. which is located 1800 pc from Earth. By comparison the two clusters are much closer, of course: M36 (bottom center) is 1330 pc distant, and M38 (center right) lies only 1066 pc away.

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