| | 60 | * Started investigating possible improvements in astrometry for the STS observations. Starting with one of the 7 pointings from 2011 built a DVO database to use as a reference. Passing this to psastro instead of the 2MASS synthetic catalog resulted in significant improvement in the astrometric error. However since all of the inputs are from very similar pointings (STS uses a very small dither), the stars are always observed in the same area of the same chips.) Comparing the solution for a given exposure with the 2 reference catalogs there appears to be a small systematic error using the gpc1 reference catalog that isn't being corrected by the IPP. Going from a 3rd order to 5th order polynomial might correct it but this would require some significant work to implement. More investigation is needed. |
| | 61 | * Spent some time looking into the very high number of false detections in the CNP fields. No conclusions as of yet. More work is needed. Deferred for STS astrometry investigation. |
| | 62 | * released some g, z, and y band m31 observations that were not previously processed sans-magic. |
| | 63 | * several hours investigating some update/cleanup issues that were blocking the postage stamp server. |
| | 64 | * short vacation |
