Status

A new value for the HRMA focal length has been postulated to be 10070 +-3mm (90% interval including systematic uncertainties). The official determination and announcement is posted below.

The new 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:

• HRMA On-orbit Focal Length -- Ping Zhao, 8/9/00
• HRMA Focal Length -- Maxim Markevitch, 12/1/01
• Plate Scale and Relative Chip Postions (with new GEOM file) -- Maxim Markevitch, 12/3/01

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