Hemisphere:  Southern  ·  Constellation: Hydra (Hya)  ·  Contains:  PK303+40.1  ·  Sh2-313
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Abell 35 (Sh2 313), 


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Abell 35 (Sh2 313)

Getting plate-solving status, please wait...
Abell 35 (Sh2 313), 


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Abell 35 (Sh2 313)

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 3nm OIII 31mm  ·  AstroDon 5nm Ha filter

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

Dates:Feb. 19, 2021

Astrodon 3nm OIII 31mm: 6x1800" (3h)
Astrodon H-alpha 5nm: 10x1800" (5h)

Integration: 8h

Avg. Moon age: 7.13 days

Avg. Moon phase: 47.32%

Astrometry.net job: 4239092

RA center: 12h 53' 32"

DEC center: -22° 52' 24"

Pixel scale: 1.222 arcsec/pixel

Orientation: 178.274 degrees

Field radius: 0.240 degrees

Resolution: 1000x1000

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

Data source: Own remote observatory

Remote source: Non-commercial independent facility


The planetary nebula Abell 35 appears strikingly different when photographed in O III as compared to its H-alpha image. The disparity is believed to be due to the effects of a stellar wind originating with a binary central star interacting with the nebular shell. The previously unidentified central star is shown to have a transverse velocity of 150 km/s and exhibits a wind having a terminal velocity of 185 km/s at a mass-loss rate of 3 x 10 to the -9th solar masses per year. The distance to the nebula is 360 pc, as determined photometrically from the visible member of the binary nucleus.

Above from:


See also an earlier article



From Wikipedia:

The Abell Catalog of Planetary Nebulae was created in 1966 by George O. Abell and was composed of 86 entries thought to be planetary nebulae that were collected from discoveries, about half by Albert George Wilson and the rest by Abell, Robert George Harrington, and Rudolph Minkowski. All were discovered before August 1955 as part of the National Geographic Society – Palomar Observatory Sky Survey on photographic plates created with the 48-inch (1.2 m) Samuel Oschin telescope at Mount Palomar. Four were later rejected as not being planetaries: Abell 11 (reflection nebula), Abell 32 (red plate flaw), Abell 76 (ring galaxy PGC 85185), and Abell 85 (supernova remnant CTB 1 and noted as possibly such in Abell's 1966 paper). Another three were also not included in the Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (SEC): Abell 9, Abell 17 (red plate flaw), and Abell 64. Planetaries on the list are best viewed with a large aperture telescope (e.g. 18-inch (0.46 m)) and an OIII filter.

It turns out to my surprise most of these are visible with my Stellarvue 130mm (5-inch) SVX.

Bottom line there are 79 imagable Abell Nebula of which I have imaged 46 (half-way point Feb 6 2012).

This is my collection:

Planetary Nebula (Abell)

These are sorted by number and behind the Abell's are other miscellaneous PNs that I have imaged... I have a list of the 100 brightest.

These are some useful Abell relevant sites:

Color and IMHO Best Filter Information

Images by Season and More Filter information in German