FITS Keywords
The FITS keywords used by MEGARA are described in full detail
elsewhere (document TEC/MEG/146).
In the following sections, we describe the keywords that are used by the pipeline.
TBD
Required by the pipeline
Type |
Keyword |
Example |
Explanation |
R |
AIRMASS |
1.1908 |
Mean airmass of the observation |
R |
MJD-OBS |
72343.34324 |
Modified JD of the start of the observation |
S |
IMAGETYP |
‘FLAT’ |
Type of the image |
S |
VPH |
‘LR-R’ |
Type of VPH |
S |
OBSTYPE |
‘SLITFLAT’ |
Type of observation |
R |
EXPOSED |
|
Photometric time? |
R |
DARKTIME |
|
TBD |
R |
EXPTIME |
|
TBD |
R |
ELAPSED |
|
Time between resets? |
S |
OBSMODE |
‘SLITFLAT |
Identifier of the observing mode |