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Gamma Virginis (Porrima).

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About this observation
Observer
Chris Dole
Time of observation
23/05/2017 - 21:53
Object
Porrima
Observing location
Newbury. G.B.
Equipment
180mm Maksutov Cassegrain @f30
ASI224mc camera.
ZWO ADC.
EQ6 pro mount.
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Very good seeing conditions are needed to image closer binaries and I was lucky enough to have excellent seeing on this occasion. Porrima consists of a pair of white F type stars of equal 3.5 magnitude. They are 38 light years away with an orbital period of 169 years. Currently they have a separation of 2.55 arc seconds and are slowly widening.

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