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:March 3, 2021
Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 9x240"
Astrodon Green Tru-Balance E-Series Gen 2: 9x240"
Astrodon H-alpha 5nm: 8x1800"
Astrodon Red Tru-Balance E-Series Generation 2: 9x240"
Integration: 5.8 hours
Avg. Moon age: 19.36 days
Avg. Moon phase: 77.98%
Astrometry.net job: 4273221
RA center: 7h 31' 42"
DEC center: -17° 0' 50"
Pixel scale: 1.221 arcsec/pixel
Orientation: 108.957 degrees
Field radius: 0.406 degrees
Resolution: 1558x1818
Locations: Stanford Faculty Observatory (Bortle 6 SQM 18.6), Stanford, California, United States
Data source: Own remote observatory
Remote source: Non-commercial independent facility
When working on the Abells I realized I could also get some low to the horizon Sharpless Objects, so here is one I have note done before. Down at about 22 DEG above my horizon.
From GalaxyMap:
This HII region lies within the molecular cloud [JKK96] A and is located well in front of the GS234-02 supershell. It contains the infrared star cluster [DBS2003] 4. Avedisova concludes that it is ionised by stars associated with the Bochum 5 cluster, including the O9.5 V star HD 59986, and places it in star formation region SFR 232.56+0.89, along with several other HII regions and reflection nebulae including VDB 97.
The class for HD 59986 is supported by a 1995 paper by Russeil, the Georgelins and colleagues. SIMBAD, however, gives the class for HD 59986 as B5, which would make it too cool to be an ionising star.
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 the 13 of these are too big for my system. .
This image was the final image in the series and I may add some more if I can get closer to the horizon... the first one was taken on December 23, 2013.
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...
Comments