27./28.7.2012 – variable stars and noctilucent clouds

Date: 27./28.7.2012
Time: 01:45-03:30
Observing site: Perniö, Salo, Finland
Instrument: L102/1000mm (4” Refractor), camera: Canon EOS 1100D, lens: Canon EF-S 18-55mm, Samyang 8mm fish eye

NELM: 4,3
SQM: 18,18
Darkness of the background sky: 5
Seeing: 2
Transparency: 2
Weather: Mostly clear sky, light wind, +10 °C, noctilucent clouds in the northern sky

Objects observed: R Cyg (visual)

The starting of this session was delayed also this time because I was observing noctilucent clouds during the early night also this time. The dark enough -time during the nights this time of year is still so short, that there isn’t much time to make any proper observations. That was the case also now. This time I could do one proper observation of a variable star, this time I observed star R Cyg.

Noctilucent clouds 27./28.7.2012, observed in Naarila, Perniö, Finland

Variable star observations:

Date Time Star Mag. Comp.
27./28.7.2012 02.49 R Cyg 8.3 8.3/9.9

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