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Alpha Sco (Antares) (Multiple Star, in Scorpius)
Observer: John A. Grant, Jr. (e-mail: jgrant@prcc.edu)
Instrument: 150-mm other Location: Poplarville, Mississippi, USA
Light pollution: moderate Transparency: good Seeing: good
Time: Sun Aug 11 22:00:00 2002 UT Obs. no.: 673
The companion to Antares has been observed several times by me and others in my 150 mm f/12 Maksutov/Cassegrain telescope using a blue filter. We have repeatedly failed to see it in a 14 inch Schmidt-Cassegrain. (Actually we first saw it three years ago with the 150 mm scope through an overcast with Antares invisible to the naked eye.) On this recent evening the companion was readily visible to both my wife and me through the blue filter (150 mm scope) so I tried it with no filter at all. It was easy to see at higher powers (above 200) but not seen at about 144 X. It does look somewhat greenish as described in Burnham, but I think something closer to blue is more accurately descriptive.
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Questions? Problems? E-mail jbc@west.net
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