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Re: XRT/CCD bias and dark
Ed Deluca wrote:
> There is some discussion on pg 2-24 of the Blue Book (XRT section)
> a PDF copy is available at:
I am actually hoping to see a document that examines
the level of bias and dark current in flight. Esp.
dark seems to vary a bit with a slight change in CCD
temperature (I'm looking at CCD_TMPC keyword value).
> Steve Saar has looked at structures in the dark images and his code to
> remove those is in the XRT_PREP routine.
It'd be really nice to have a *brief* written document
on the logic of dark subtraction applied into xrt_prep.
> There is also a "grey book" on the CCD that I have only seen in hardcopy,
> maybe Kano has an extra copy available. I think the Blue Book text is from
> the grey book.
It'd be nice to make available on line, too.
I'll ping Kano-san about it.
"Bish" K. Ishibashi, Ph.D.
NorthWest Research Associates, Inc. e firstname.lastname@example.org
CoRA Division w 303-415-9701 x241
3380 Mitchell Lane f 303-415-9702
Boulder, CO 80303
U.S.A. h www.cora.nwra.com/~bish