| 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
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| More to know : |
KIC 8230523, Kepler Input Catalog:
http://vizier.cfa.harvard.edu/ ...
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| 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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