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Date + Time ................................
04/09/2017 - 22:00 UTC
Location ....................................
"Nunki Observatory" - Skiathos
Optics .........................................
Officina Stellare Advanced RILA 400 f/5.25
Tools .......................................... THE SKY
X
Camera ......................................
SBIG
STXL11002 with FW8G-STXL (Astrodon
filters)
Exposure Time.........................
Rc: 7.7 Hours
Mount ....................................... Paramount
ME
Guiding .................................... Unguided
Processing Details .................. ACP , Muniwin
More Details ...........................
Environment Temperature : 21 oC Camera Temperature -25 οC
Sky temperature ..................... 8.4. οC
Notes ........................................ Weather:
Clear Transparence:
Medium
Humidity : 75-85%
Moon Illumination ............... 98%
Target details ......................... EW-
KW
EW-Ursae Majoris-type eclipsing variables.
These are eclipsers with periods usually shorter than 1 day,
consisting of ellipsoidal components almost in contact and having
light curves for which it is impossible to specify the exact times
of onset and end of eclipses. The depths of the primary and
secondary minima are almost equal or differ insignificantly. Light
amplitudes are usually <0.8 mag. in V.
The components generally belong to spectral types F-G and later.
KW
Contact systems of the W UMa type, with ellipsoidal components of
F0-K spectral type. Primary components are main-sequence stars and
secondaries lie below and to the left of the main sequence in the
(MV, B-V) diagram.
'The Artistic Image above, reproduced courtesy of Mark A. Garlick / markgarlick.com.
No unauthorized use". |
