[Last Change: 21 Feb 2012 (rev 8)]

Focal Length, Plate Scale, and Detector Positions

Status

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.

Analysis:

Title	Author	Date
Plate Scale and Relative Chip Postions	Maxim Markevitch	2001-12-03
HRMA Focal Length	Maxim Markevitch	2001-12-01

| HRMA On-orbit Focal Length | Ping Zhao | 2000-08-09 |