Aaron,
You might want to check out Mike Wise's presentation at the April CIAO
workshop, available from http://asc.harvard.edu/ciao/wrkshp_apr_ps.html
where he discusses issues concerning the spatial dependence of the response.
At the end of the day the decision as to whether or not you can get away with
one RMF depends on what level of accuracy you desire, but Mike's presentation
does show that the RMF does not vary largely over S3 (within about +-10% for
most of the chip, see presentation for further details).
Doug
On Thursday 02 August 2001 19:23, Aaron D. Lewis wrote:
> Thanks for these products Leisa et al.,
>
> On your web page describing them, you state that for S3, only one RMF is
> needed, since the spectral response has little spatial dependence. I have
> extended sources covering the entire S3 chip, which I intend to divide
> into annuli for spectral analysis - can I truly use one RMF for the entire
> analysis?
>
> Also, I am interested in using Alexey Vikhlinin's background reduction
> code and I wanted to confirm my assumption that his code could
> be run following yours, and that it would be 'safe' to do so.
>
> -Aaron Lewis
> UC Irvine
>
> On Tue, 31 Jul 2001, Leisa Townsley wrote:
> > Hi everyone,
> >
> > Code for mitigating the effects of charge transfer inefficiency (CTI)
> > in ACIS CCDs is now available to interested users. It works on devices
> > I0-I3, S2, and S3 at focal plane temperatures of -110C and -120C.
> > Matching RMFs are available as well.
> >
> > The RMFs were generated using our Monte Carlo CCD simulator code, which
> > is also available.
> >
> > Please see http://www.astro.psu.edu/users/townsley/cti/
> > and http://www.astro.psu.edu/users/townsley/simulator/
> > for details and instructions.
> >
> > We welcome your input.
> >
> > Leisa Townsley and Patrick Broos
> >
> > Pennsylvania State University
> > Department of Astronomy and Astrophysics
> > 525 Davey Lab
> > University Park, PA 16802-6305
> > http://www.astro.psu.edu/
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