It looks like an ordinary star but...

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It looks like an ordinary star but...

Postby Bob Andersson » Mon Jun 23, 2014 9:15 am

Hi folks,

I grabbed this image of Albireo a couple of nights ago:

    Image

The bright orange star has a surface temperature of about 4,500K and the blue one a surface temperature a little over 10,000K, hence the beautiful colour contrast between the two of them. For reference the Sun has a surface temperature a little under 6,000K.

Albireo should be easy to find in the night sky right now so long as you don't live way down in the Southern hemisphere or in a city. Have a look to the east around midnight and see if you can find the constellation of Cygnus, the Swan, as shown on the star chart here. The same chart also shows Albireo (near the bottom). To the naked eye it looks like a single fairly unremarkable star. 8)

Bob.
Sony RX1R II. Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, M.Zuiko Digital ED 40-150mm f/2.8 + 1.4x T/C, Lumix 7-14mm f/4, Leica DG Summilux 15mm f/1.7 ASPH, M.Zuiko Digital 45mm 1:1.8
M.Zuiko Digital ED 75mm 1:1.8, Leica D Vario-Elmar 14mm-150mm f/3.5 - f/5.6 ASPH.
OM-D E-M5, H-PS14042E, Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.
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Re: It looks like an ordinary star but...

Postby Gordon Laing » Mon Jun 23, 2014 9:09 pm

Nice shot Bob!
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