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This double is Struve 644. I looked at it last month in my NexStar 9.25
inch SCT, and while it split fairly easily, at the time I could see
little if any color contrast (the primary appeared a sort of
yellowish-orange color (K-class spectral type)). There is a third
fainter star in the field but it may not have been related to the other
two. For a more interesting color-contrasting target, try Psi-5
Aurigae, as it shows an off-white primary and a fainter orangish
companion about 31 arc seconds away. Better yet, Iota Cancri is a real
beauty when it comes to color contrast, so it easily trumps the other
two stars. Clear skies to you.
--
David W. Knisely KA0CZC@xxxxxxxxx
Prairie Astronomy Club: http://www.prairieastronomyclub.org
Hyde Memorial Observatory: http://www.hydeobservatory.info/
**********************************************
* Attend the 13th Annual NEBRASKA STAR PARTY *
* July 23-28, 2006, Merritt Reservoir *
* http://www.NebraskaStarParty.org *
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