Opened 17 years ago
Last modified 16 years ago
#1311 assigned defect
masks for non-existent stars in g band MD06 stacks
| Reported by: | kpat.jhu | Owned by: | eugene |
|---|---|---|---|
| Priority: | normal | Milestone: | |
| Component: | misc | Version: | unspecified |
| Severity: | normal | Keywords: | bright star mask |
| Cc: |
Description
There are masked areas in the MD06 g band images that do not correspond to anything at other wavelengths. From the cross-hair shape of the masks it seems that IPP decided that a star was there. Since the source of the star masks is 2MASS, perhaps these correspond to sources that have some odd SED shape in the IR that IPP decided would only be bright in g. However, since the sources are not their at other wavelengths, maybe this is just some bug that hits only the g band. I have not seen similar non existent star masks popping up in the other bands.
example RGB=irg color images made from the stacks showing this effect can be found at http://ps1sc.ifa.hawaii.edu/PS1wiki/index.php/Stack_Anomalies#non-existent_stars_only_masked_in_the_g_band
Some example coordinates are as follows
#skycell xpix ypix RA Dec
100 3051.0 1355.0 184.259247 47.856604
081 721.0 3501.0 186.533728 47.301351
079 5727.0 4823.0 185.962259 47.380999
