Thursday, August 25, 2016

imaged theta Lyrae (Halifax)

The BGO robot imaged the multi-star system θ (theta) Lyrae for me.

multi-star system theta Lyr in luminance

Luminance only, 3 seconds subexposures, 10 stacked shots. FITS Liberator, GIMP. North is up; left is east.

I first viewed this system on 2 Aug 2010 and noted two of the star colours. Learned from the Cambridge Double Star Atlas that it was a triple and made a note to view again.

Easy in the photo. The B star is the bright star to the east-north-east; the C star is fainter, to the east-south-east, at the same separation as B. A lovely triangle.

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