Crab Nebula

11 ноября

The Crab Nebula (catalogue designations M1, NGC 1952, Taurus A) is a supernova remnant and pulsar wind nebula in theconstellation of Taurus.[5] Corresponding to a bright supernova recorded by Chinese astronomers in 1054, the nebula was observed later by English astronomer John Bevis in 1731. At an apparent magnitude of 8.4, comparable to that of the largest moon of Saturn, it is not visible to the naked eye but can be made out using binoculars under favourable conditions.

At X-ray and gamma ray energies above 30 keV, the Crab is generally the strongest persistent source in the sky, with measured flux extending to above 10 TeV. Located at a distance of about 6,500 light-years (2 kpc) from Earth, the nebula has a diameter of 11 light years (3.4 pc, corresponding to an apparent diameter of some 7 arc minutes) and expands at a rate of about 1,500 kilometers per second (0.5% c). It is part of the Perseus Arm of the Milky Way galaxy.

Imaging telescopes or lenses: GSO Newton 200/1000 f5
Imaging cameras: Canon EOS 450Da
Mounts: Skywatcher NEQ-6 Pro Synscan
Guiding telescopes or lenses: GSO Viewfinder 8×50
Guiding cameras: ALccd 5L-IIc
Focal reducers: Baader MPCC Mark III
Software: PHD Guiding 2, DeepSkyStacker, Binary Rivers BackyardEOS, Adobe Photoshop CS3
Filters: Baader UHC-S 2″
Resolution: 4226×2786
Dates: Nov. 1, 2014
Locations: Backyard
Frames: Baader UHC-S 2″: 50×180″ ISO800
Integration: 2.5 hours
Avg. Moon age: 8.33 days
Avg. Moon phase: 60.00%
RA center: 83.624 degrees
DEC center: 21.993 degrees
Pixel scale: 1.057 arcsec/pixel
Orientation: -177.900 degrees
Field radius: 0.743 degrees

Аuthot: Opilio

Astro[hotography of the day of SPONLI, 11.11.2014