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(IAAC) Obj: 39 Dra (STF 2323) - Inst: Discovery DHQ 8" dobsonian
IAAC Deep-Sky Observing Log Entry
Name of observer: Tom Campbell
Your observing skills then: Advanced (many years)
Date/time of observation: June 6, 2003 11:30pm CDT
Site type: Exurban
Location: Iola, Kansas (Long: 95o24'W Lat: 37o55'N)
Transparency: Clear (8/10)
Seeing: Mostly Stable (7/10)
Moon presence: Major - Gibbous or near object
Instrument: Discovery DHQ 8" dobsonian
Powers: 49x, 81x, 125x, 203x, 305x
Filters: None
Deep Sky Object: 39 Draconis (Struve 2323)
Object category: Multiple Star.
Object class: Triple Star
Constellation: Dra
Position: RA: 18h 23m 54s | Dec: +58o48'
Object data: Mag: 5.1, 8.0, 8.1
Description:
With the nearly first quarter Moon high overhead as twilight neared an
end, I knew that my Herschel galaxies were out of the question from my
back yard. So instead, I gathered up the last couple of issues of
Sky&Telescope to see what objects were featured. As it turned out,
most of the observing articles were about double stars. In the
moonlight, doubles seemed the best course to take, so I thought it was
fitting. I hand-picked several of those listed that I either hadn't
seen yet, or else I hadn't visited in quite a while. I began in Corona
Borealis, but the glare of the Moon in that region of sky made me
retreat into Draco, the land of the Dragon.
--
The two brighter stars of this triple system were widely separated at
49x. The brighter component was white and the secondary star was
blue-white. The third component was detected at 88x, but 125x provided
a nice view of the faint star nestled in closely to the brightest
member. This third component appeared white or blue-white and was
about three magnitudes fainter than the brightest star. The three
stars were almost, but not quite, in a straight line.
--
Any Web URL related to log:
http://www.iolaks.com/softech/astro
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