Hemisphere:  Northern  ·  Constellation: Auriga (Aur)  ·  Contains:  Sh2-228
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Sh2 228 HA RGB (LBN 784), 


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Sh2 228 HA RGB (LBN 784)

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: Software Bisque TheSky X Professional  ·  photoshop  ·  Starnet ++  ·  CCDWare FocusMax V.4  ·  PixInsight  ·  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:Jan. 16, 2021

Astrodon Blue Tru-Balance E-Series Gen 2: 10x240"
Astrodon Green Tru-Balance E-Series Gen 2: 10x240"
Astrodon H-alpha 5nm: 1x3600"
Astrodon Red Tru-Balance E-Series Generation 2: 10x240"

Integration: 3.0 hours

Avg. Moon age: 3.36 days

Avg. Moon phase: 12.24%

Astrometry.net job: 4159147

RA center: 5h 13' 25"

DEC center: +37° 27' 14"

Pixel scale: 1.222 arcsec/pixel

Orientation: 174.730 degrees

Field radius: 0.120 degrees

Resolution: 500x500

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

Data source: Own remote observatory

Remote source: Non-commercial independent facility


From GalaxyMap:

Also called
LBN 784

Sh 2-228 contains the infrared star cluster [IBP2002] CC01. The 1800 solar mass cluster is 1 to 2 million years old, and the surrounding field stars about 5-6 million years old.

Acquisition Note: I had 8 1800s HA images and they looked much worse that the 1 (ONE) 3600s image. I got rid of the hot pixels with CosmeticCorrection, and that was it.


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 17. 13 of these are too big for my system. So 2 to go: (262 and 279).

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:


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

Hope you enjoy these obscure but interesting objects...