Image of the day 12/25/2013

Winter White Dwarfs, 



    
        

            Giuseppe Donatiello

Winter White Dwarfs

Image of the day 12/25/2013

Winter White Dwarfs, 



    
        

            Giuseppe Donatiello

Winter White Dwarfs

Equipment

Imaging Telescopes Or Lenses
127 ED doublet f/9 (homemade)
Imaging Cameras
Homemade MaxCam 1280x1048 PDS
Mounts
Synta EQ5
Software
Star Tools · RegiStax · Corel Paint Shop Pro x2 · Emil Kraaikamp's AutoStakkert!

Acquisition details

Dates:
Dec. 20, 2013
Frames:
Integration:
0
Avg. Moon age:
17.55 days
Avg. Moon phase:
91.51%

Basic astrometry details

Astrometry.net job: 143976

Resolution: 3738x2394

Locations: Home site, Oria, Brindisi, Italy

Data source: Backyard

Description

From left to right in order of increasing difficulty.

40 Eridani (also known as Omicron2 Eridani, or Keid) is a triple star system less than 16.5 light years away from Earth. It is in the constellation Eridanus. The pair 40 Eridani B/C was discovered on January 31, 1783, by William Herschel. In 1910, it was discovered that although component B was a faint star, it was white in color, in fact it was the first discovered white dwarf.

Sirius A and a faint white dwarf companion of spectral type DA2, called Sirius B. The distance separating Sirius A from its companion varies between 8.1 and 31.5 AU.

Procyon A and a faint white dwarf companion of spectral type DQZ named Procyon B.

Comments

Histogram

Winter White Dwarfs, 



    
        

            Giuseppe Donatiello