Hemisphere:  Northern  ·  Constellation: Auriga (Aur)  ·  Contains:  PK173+02.1  ·  Sh2-231  ·  Sh2-233  ·  Sh2-235
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Sharpless2 231, 233 and 235 Details HA RGB, 



    
        

            jerryyyyy
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Sharpless2 231, 233 and 235 Details HA RGB

Getting plate-solving status, please wait...
Sharpless2 231, 233 and 235 Details HA RGB, 



    
        

            jerryyyyy
Powered byPixInsight

Sharpless2 231, 233 and 235 Details HA RGB

Imaging telescopes or lenses: Stellarvue SVT 130T

Imaging cameras: SBIG STT 8300M

Mounts: Astro-Physics Mach1AP GTO CP4

Guiding telescopes or lenses: Stellarvue SVT 130T

Guiding cameras: SBIG STT 8300M

Software: PixInsight  ·  Software Bisque TheSky X Professional  ·  photoshop  ·  Starnet ++  ·  CCDWare FocusMax V.4  ·  Straton Destar 2.0  ·  Topaz Denoise AI  ·  3D LUT Creator  ·  Maxim DL  ·  EQMOD  ·  DC-3 Dreams ACP Observatory Control Software  ·  Astro-Physics Command Center (APCC) Software  ·  Annie's Astro Actions Version 7.0

Filters: Astrodon Red Tru-Balance E-Series Generation 2  ·  Astrodon Blue Tru-Balance E-Series Gen 2  ·  Astrodon Green Tru-Balance E-Series Gen 2  ·  AstroDon 5nm Ha filter

Accessory: Moonlite Nitecrawler 3.5  ·  Tolga Astro Alnitak Flat-Man Electroluminescent Flat Fielding Device


Dates:Dec. 11, 2020

Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 15x240" (1h)
Astrodon Green Tru-Balance E-Series Gen 2: 15x240" (1h)
Astrodon H-alpha 5nm: 12x1800" (6h)
Astrodon Red Tru-Balance E-Series Generation 2: 15x240" (1h)

Integration: 9h

Avg. Moon age: 25.93 days

Avg. Moon phase: 13.98%


RA center: 05h39m48s.861

DEC center: +35°5516.34

Pixel scale: 1.220 arcsec/pixel

Orientation: 174.843 degrees

Field radius: 0.589 degrees

More info:Open 


Resolution: 2611x2291

Locations: Stanford Faculty Observatory (Bortle 6 SQM 18.6), Stanford, California, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

From GalaxyMap:

Sh 2-231 to Sh 2-235 form a complex of HII regions located together in the Perseus arm in the outer galaxy. This complex may be associated with an old (330 thousand years) supernova remnant, FVW 172.8+1.5.

There is a giant molecular cloud, G174+2.5, containing Sh 2-231, Sh 2-232, Sh 2-233, and Sh 2-235 that is at a distance of about 1800 pc.

See this old Tak 180 ED image for the basic lay of the land... I had lost this image but found it again when Salvador fixed his systems...

Sharpless2 231-235 via Tak 180 ED

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 30. 13 of these are too big for my system. So 17 to go.

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...

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