The actual HRMA on-orbit focal length is 10070 +/- 3mm (90% interval including systematic uncertainties). The official determination and announcement are posted below. The GEOM file produces acceptable sky coordinates for all detectors; the residual errors are well within 1" in the areas normally used for imaging observations.
Title | Author | Date |
---|---|---|
Plate Scale and Relative Chip Postions | Maxim Markevitch | 2001-12-03 |
HRMA Focal Length | Maxim Markevitch | 2001-12-01 |