Difference between revisions of "The RIMO"
Line 21: | Line 21: | ||
<center> | <center> | ||
− | {| border="1" cellspacing="0" cellpadding="5" align="center" width= | + | {| border="1" cellspacing="0" cellpadding="5" align="center" style="background:silver" width="600px" |
! | ! | ||
<span style="color:red"> There are no detector-level products in the first release, so there will be no detector-level parameters in the accompanying RIMO. This section will serve for later releases </span> | <span style="color:red"> There are no detector-level products in the first release, so there will be no detector-level parameters in the accompanying RIMO. This section will serve for later releases </span> |
Revision as of 16:12, 4 October 2012
Contents
Overview[edit]
The RIMO, or Reduced Instrument Model is a FITS file containing selected instrument characteristics that are needed by users who work with the released data products. There will be two RIMOs, one for each instrument, which will follow the same overall structure, but will differ in the details. The type of data in the RIMO can be:
- Parameter
- namely scalers to give properties such as a noise level or a representative beam FWHM
- Table
- to give filter transmission profiles or noise power spectra
- Map
- to give beam shape
The different types of data are written into different BINTABLE extensions of the FITS file, and these are described below.
Outstanding business:
- common or mixed items, like, eventually cross beam window functions between an HFI and an LFI beam
Detector-level parameter data[edit]
There are no detector-level products in the first release, so there will be no detector-level parameters in the accompanying RIMO. This section will serve for later releases |
---|
The detector parameter data are given in the form of a table giving the parameter values for each detector. The table columns are:
- Channel identification
- For HFI these will be of the form 100-1a, where the last letter is applied to the PSBs only, and for LFI they will have the form 27M or 18S. There
will include data for its 52 bolometers. F, and will include data for its 22 .
Map-level parameter data[edit]
Detector noise spectra[edit]
Beam Window Functions[edit]
FITS file structure[edit]
reduced IMO
Flexible Image Transfer Specification
Full-Width-at-Half-Maximum
(Planck) High Frequency Instrument
(Planck) Low Frequency Instrument