[Fwd: Re: [Fwd: [Fwd: Plate Scale for Hinode/XRT]]]

[Leon Golub <golub@head.cfa.harvard.edu>]

-------- Original Message --------
Subject: Re: [Fwd: [Fwd: Plate Scale for Hinode/XRT]]
Date: Mon, 23 Apr 2007 12:09:39 -0400
From: Peter Cheimets <pcheimets@cfa.harvard.edu>
To: Mark Weber <mweber@cfa.harvard.edu>
CC: Leon Golub <golub@head.cfa.harvard.edu>, Paul Reid <preid@cfa.harvard.edu>, 
        edeluca <edeluca@cfa.harvard.edu>
References: <462CA4F6.7060306@head.cfa.harvard.edu> 
<462CB1E9.1070004@cfa.harvard.edu> <462CCABE.5050104@head.cfa.harvard.edu> 
<462CD6FD.9060508@cfa.harvard.edu> 
<C8F65D57-C3E5-4BE8-B61E-48D5B934F7C9@cfa.harvard.edu>

plate scale is: 13.5e-3/2707.157 = 4.987e-6 rad = 1.0286 arcsec/pixel
(give or take).

Peter

Mark Weber wrote:
 > 13.5 micron per pixel. --Mark
 >
 > On Apr 23, 2007, at 11:55 AM, Peter Cheimets wrote:
 >
 >> What size are the pixels and I'll tell you?
 >>
 >> Peter
 >>
 >> Leon Golub wrote:
 >>> Right. So what's our plate scale?
 >>>
 >>> Leon
 >>>
 >>>
 >>> Peter Cheimets wrote:
 >>>> Goddrich measured the F/L as 2707.5mm, we measured is at 2707.157mm.
 >>>>
 >>>> Peter
 >>>>
 >>>> Leon Golub wrote:
 >>>>
 >>>>> Paul,
 >>>>>
 >>>>> One of our Japanese colleagues raises the quesiton of XRT plate
 >>>>> scale. In
 >>>>> principle, since we know the focal length now to better than 1mm,
 >>>>> we ought
 >>>>> to be able to specify the plate scale to better than 1 part in
 >>>>> 2700, right? Or
 >>>>> am I wrong about that?
 >>>>>
 >>>>> Leon
 >>>>>
 >>>>>
 >>>>
 >>>
 >>> ***********************************************************
 >>> Dr. Leon Golub; Harvard-Smithsonian Center for Astrophysics
 >>> 60 Garden Street, Cambridge MA 02138
 >>> Ph: 617 495 7177; Fax: 617 496 7577
 >>> e-mail: lgolub@cfa.harvard.edu
 >>> http://hea-www.harvard.edu/~golub/HomePage.html
 >>> ***********************************************************
 >>
 >> --
 >>
 >> Peter Cheimets
 >> Smithsonian Astrophysical Observatory             ,__o-
 >> Smithsonian Institution                         _-\_<,
 >> 60 Garden St.                                  (*)/'(*)-
 >> Cambridge, MA 02138
 >> pcheimets@cfa.harvard.edu
 >> (617)495-7350      (voice)
 >> (617)495-7098      (FAX)

-- 

Peter Cheimets
Smithsonian Astrophysical Observatory             ,__o-
Smithsonian Institution                         _-\_<,
60 Garden St.                                  (*)/'(*)-
Cambridge, MA 02138

pcheimets@cfa.harvard.edu
(617)495-7350      (voice)
(617)495-7098      (FAX)



-- 


***********************************************************
Dr. Leon Golub; Harvard-Smithsonian Center for Astrophysics
60 Garden Street, Cambridge MA 02138
Ph: 617 495 7177; Fax: 617 496 7577
e-mail: lgolub@cfa.harvard.edu
http://hea-www.harvard.edu/~golub/HomePage.html
***********************************************************