GSC 522:799



 

IMAGE DETAILS

Object ............................................ GSC 522:799 (OT) Del
Constellation ..............................  Delphinus
V. Magnitude + Variability......... 12.25-12.93 (0.371)  / EA

RA / DEC ..................................... 20h:31m.32sec / +06 46m.33sec
Period ...........................................  0.646147  days

Comparison star .........................  GSC 522:1241
Check star .................................... G
SC  522:725

Date + Time ................................  11/7/2016  - 19:45 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.........................    RED: 6.1  Hours
Mount .......................................   Paramount ME
Guiding ....................................    Unguided
Processing Details ..................   Maxim , Muniwin
More Details ...........................    Environment Temperature : 25 oC Camera Temperature -30 οC
Sky temperature .....................   -5.4. οC
Notes ........................................   Weather: Clear  Transparence:
Medium  Humidity : 80-85 %
Moon Illumination ...............    88%

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