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Delta Cyg (Multiple Star, in Cygnus)
Observer: Giorgos Koronis (e-mail: giorgos.koronis@lies.com)
Instrument: 8-inch Dobsonian reflector Location: Kalamata, Greece
Light pollution: light Transparency: good Seeing: excellent
Time: Sun May 23 23:40:00 2004 UT Obs. no.: 1004
The air was steady.Using a 6.3 mm plossl (144x)the secondary was steadily visible between the difraction spikes.Nice binary and nice test for the steadiness of the air.
Delta Cyg (Multiple Star, in Cygnus)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: light Transparency: good Seeing: fair
Time: Wed Jul 2 06:30:00 1997 UT Obs. no.: 177
Burnham's calls this a "fairly severe test" for a 3" or 4" telescope, but my 8-inch couldn't split it. Presumably he was talking about a refractor, not a reflector. Also, it could have been that the seeing wasn't sufficiently good.
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Questions? Problems? E-mail jbc@west.net
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