990129  
Analysis of the vignetting by the HRC-S filter.
The UV/Ion shield is offset by 12mm from the detector towards the mirror. Filter boundaries will cause a feature in a spectrum, unless corrected. This document specifies the calculation of the response in regions where the beam overlaps two distinct filters.

  981030  
Exposure map product ICD (DRAFT).

  981030
  Data-flow-diagrams of current conception of the exposure map processing. (Specifications TBS.)
Exposure map, imaging mode.
         Average ARF, imaging mode.
         Average ARF, grating mode.

  980619  
Specifications
of the current conception of the exposure map processing. (Also see the accompanying data-flow diagram.)

  980506  
Theoretical specification of exposure maps.
Mathematical description of the AXAF response and derivation of the exposure map and instrument map.

980311  
Draft exposure map engine interface :
Input calibration data, input observational data, control parameters.

980521  
How exposure maps are used: an overview of what the map is and how it gets used in different analysis scenarios, such as ACIS narrow-band imaging, point-source analysis, HRC wide-field imaging, and grating cases.

980306 
Draft Exposure map data product:
Definition of the exposure map imaging-mode FITS file.  
Input data product descriptions may be found in the Analysis Reference Data ICD and related links under the ARD: Analysis Reference Data ICD   heading.

  An overview of AXAF exposure maps, from the ASC Data Analysis Open House, 1 October 1997.



Detailed description of exposure map definitions and input data. (superceded).

  Draft processing specifications (superceded).

Notes from meetings:

970910:                Two informal meetings, w/ SDS members (livetime, psf, vignetting...)

970923:                Exposure Map Review/Planning Meeting Notes (Friday, 19 September 1997)

Development tasks :       Outline        Diagram