Subject: Plots of DIS noise & the fix

From: Alan Uomoto

Submitted: Tue, 15 Apr 1997 13:58:49 -0400

Message number: 31 (previous: 30, next: 32 up: Index)

I've plotted examples of the 60 Hz noise from the DIS Calibration
Archive(*) back to November 1994. The 60 Hz noise level is now lower than
it's ever been. Michael Strauss has put the plots and a short summary on
the Princeton WWW server (
http://www.astro.princeton.edu/APO/DISnoisefixed/index.html ).

If you want to be more quantitative, the before and after bias frames that
Jon Brinkmann obtained are availabe via anonymous ftp at
galileo.apo.nmsu.edu:/pub/images/au/.

Alan Uomoto
April 15, 1997

(*) See message 129 in the apo35-general mailing list for the request for
DIS Calibration Archive data. These data will be generally available as
soon as we install a new disk at JHU (but we're accepting contributions
now). Thanks to Don Hoard, Luisa Rebull, and Gordon Richards for the data
they've already sent.

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