Difference: AAOmegaFileFormat (9 vs. 10)

Revision 102008-07-21 - RonHeald

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AAOmega File Format (or, which spectrum is which object?)

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File Extensions

Changed:

<
< The table below gives a summary of the 2dfdr output file content, for either an individual reduced frame (....red.fits files) or a combined reduced frame (combined_frames.fits file). The file is a standard Multi-Extension FITS file (FITS MEF).

>
> The table below gives a summary of the 2dfdr output file content, for either an individual reduced frame (....red.fits files) or a combined reduced frame (combined_frames.fits file). The file is a standard Multi-Extension FITS file (FITS MEF). See the FITS definition.

Extension	IRAF format	Contents

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Combining Multiple AAOmega Data Sets containing a Common Subset of Targets

Changed:

<
< Instead of simply combining based on the fibre number in the reduced data frames (i.e. combine fibre 1 in frame 1 with fibre 1 in frame 2 etc.), the 2dfdr combine algorithm combines data based on object name. This has some advantages:

>
> Instead of simply combining based on the fibre number in the reduced data frames (i.e. combine fibre 1 in frame 1 with fibre 1 in frame 2, etc.), the 2dfdr combine algorithm combines data based on object name. This has some advantages:

Multiple configurations of the same field can be combined together in the case where some, but not all objects are in common.
Only sky (S) and program (P) fibres are combined. This includes cases in which a fibre has been disabled part way though the observation of a field, so that only the good data is combined.

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