Strange spot on HIP66004
Posted 24 March 2013 - 09:44 PM
Posted 26 March 2013 - 03:50 AM
I appreciate this is difficult with a single shot from I assume a remote scope. Check the frame for other artifacts/ hot pixels etc. For my SN hunting I always take two or more images to avoid false alarms.
Posted 26 March 2013 - 05:58 AM
Looks like a dead pixel.
Seems likely. This happens to be amazingly similar to an artist's rendition of an exoplanet transiting a star. But of course the resolution of even a big professional scope with adaptive optics is 1,000 times to low to resolve this star, which lies some 400 light-years away and is no doubt a dwarf (B-V=0.234, spectral class A5, luminosity around 20 Suns, right on the main sequence).
So the "disk" is in fact entirely spurious as, no doubt, is the "planet."