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Astronomy Science Data
Kepler data, sensor pos 41


Search for micro variables, object 1, Kepler data pos 41

Kepler data, sensor pos 41: Search for micro variation variable stars, object 1
Coordinates/Direction : RA: 290.427033o, DEC: +43.624771o. Angle calculator
Object size : sensor about 1 x 1 degrees
Object magnitude : -
Object : Area of Cygnus, Lyra and Draco
Date : 2009-08-19 to 2013-04-08
Lens/telescope : Kepler Space observatory
Film/CCD : Sensor position 41 (from sensor 41, 42, 43, 44), Kepler data, credits: STScI
Filter/Wavelength : 420 to 900 nm
Exp. time : 27 minutes x 44 frames
Image process tool :  AstroImageJ, Fitswork, Irfanview
Processing : Multi aperture analyze
Site : Space
Comment : Here I with differential photometry looking for stars that just have small amounts of variation relative there neighbor stars. Just by random pick up 8 stars and compare them against each other. Here is a star that have a different pattern compare to the other 7 stars that I use as reference stars. The signal is just above the noise level.

I have not find out which stars this is yet.
With help from Hans at Astronet forum the star now is identified as KIC 8230523
More to know : KIC 8230523, Kepler Input Catalog:
http://vizier.cfa.harvard.edu/ ...

Differential Photometry of variable star with micro variations

Kepler data, sensor pos 41: Search for micro variation variable stars, object 1

Without error bars for clarity

Kepler data, sensor pos 41: Search for micro variation variable stars, object 1
Image process tool : AstroImageJ, Irfanview
Processing : Multi aperture analyze
Site : Space
Comment : This is the irregularly pattern this star shows. None of the other 7 stars show this pattern, otherwise I had thought it to be an instrumental error.
More to know : Semiregular variable star, Wikipedia:
https://en.wikipedia.org/ wiki/ Semiregular variable star
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