KW Peg


IMAGE DETAILS

Object ............................................ KW Peg
Constellation ..............................  Pegasus
V. Magnitude + Variability......... 11.9  - 12.3 EA

RA / DEC ..................................... 21h:39m.11sec / +26 42m.34.3sec
Period ...........................................  "0.81640193 d" (19.593646h)

Comparison star .........................  GSC 2197:1871
Check star ....................................  GSC 2197:1450

Date + Time ................................  13/08/2017  - 18:50 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: 5.7  Hours
Mount .......................................   Paramount ME
Guiding ....................................    Unguided
Processing Details ..................   ACP , Maxim , 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 ...............    97.38%

Target details .........................  EA-β Persei-type (Algol) eclipsing systems. Binaries with spherical or slightly ellipsoidal components. It is possible to specify, for their light curves, the moments of the beginning and end of the eclipses. Between eclipses the light remains almost constant or varies insignificantly because of reflection effects, slight ellipsoidality of the components, or physical variations. Secondary minima may be absent. An extremely wide range of periods is observed, from 0.2 to ≥10000 days. Light amplitudes are also quite different and may reach several magnitudes.

                

                

'The Artistic Image above, reproduced courtesy of Mark A. Garlick / markgarlick.com. No unauthorized use".

Nikos Paschalis