Subject: clarification on SPIcam filter wheel/CCD

From: Alan Diercks

Submitted: Wed, 19 Feb 1997 09:41:56 -0800

Message number: 127 (previous: 126, next: 128 up: Index)

Just answer a couple of questions which were raised in the user's committee
meeting....

>  A filter wheel exists; they are now working on making it
> controllable remotely.

The filter wheel is currently controllable remotely.


>  It is not clear whether the chip in SPICAM is thinned.  If it is
> not, then (unlike DSC) SPICAM has very little response in the UV.

The SPIcam CCD is thinned and AR coated with SITe's standard AR coating.
This is not the UV optimized AR coating that is used on the Sloan
u' chips or on the DSC chip.

Plans for a head to head comparison of the u' throughput of each
instrument during some engineering time are underway.

-Alan
APO APO APO APO APO  Apache Point Observatory 3.5m  APO APO APO
APO
APO  This is message 127 in the apo35-general archive. You can find
APO  the archive on http://www.astro.princeton.edu/APO/apo35-general/INDEX.html
APO  To join/leave the list, send mail to apo35-request@astro.princeton.edu
APO  To post a message, mail it to apo35-general@astro.princeton.edu
APO
APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO APO