BX Peg


 

IMAGE DETAILS

Object ............................................ BX Peg
Constellation ..............................  Pegasus
V. Magnitude + Variability......... 10.8-11.53 V/ EW
/KW
RA / DEC ..................................... 21h:38m.49sec / +2641m.34sec
Period ...........................................  0.280041636 days

Comparison star .........................  GSC 2197:1933
Check star .................................... G
SC  2197:1328

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".

 

Nikos Paschalis