The fits export now supports a number of extra features.
- Object naming for IRAF
- Sequence information
- Accurate exposure epoch and integration time
- All configuration details of pixcel stored
- Reads external data files for fits information
See the configuration section for more details on setting some of these values.
Main extra kewords
- CAMERA
- Name of camera taken from .ini file
- DETECTOR
- Name of detector taken from .ini file
- NRUN
- Run number
- OBJECT
- The name of the object set in the object box, this may also form the first
part of the filename
- OBSTYPE
- One of OBJECT,ARC,FOCUS,TEST,DARK,DOMEDARK,DOMEFLAT,TWILIGHT set on the observation panel
- IMAGETYP
- identical to OBSTYPE
- IRAFNAME
- The filename of the fits file
- FILEPATH
- The path and direcctory the file was written to
- DATE_OBS
- The start of the readout accurate to 1 second, given in the IAU Y2k compatible format
- TIME_OBS
- The number of milliseconds since the start of the sequence, see timing for details
- EXP_TIME
- The requested exposure time in seconds, see timing for more details
- NFRAMES
- The number of frames in each loop of the sequence. This is equal to the number of quadrants selected times the number of reads
- FRAME
- The number of this frame in the sequence ( runs from 1 to NFRAMES x NLOOPS )
- CHIP
- The number of this chip ( 1 - 4 )
- QUAD
- The number of this quadrant ( 1 - 4 )
- NLOOPS
- The total number of loops in the sequence
- LOOP
- The current loop for this frame ( 1 - NLOOPS )
- NREADS
- The number of reads selected at each loop in the sequence
- READ
- The current read ( 1 - NREADS )
- READMODE
- The readmode selected, ( either RRR or NDR )
- TOTALNDR
- The total number of NDR which will be made of this quadrant
- CURR_NDR
- The number of this read (1 - TOTALNDR )
- SUBTRACT
- Has this frame been subtracted ( T / F )
- INVERTED
- Has this frame been inverted ( T / F )
- READRATE
- The pixcel rate in kHz
- CHIPn
- The list of selected quadrants in chipn
Pixcel engineering values
This is the list of other values from pixcel.ini which are used to configure
the 4100 controller. The names have been changed to meet fits conventions but the full name appears in the comment.
I am not documenting them because if you don't already know what they mean there isn't a lot of point.
External fits file
An external fits header fragment can be specified in the configuration file. If present this will be read in at the start of a sequence and inserted in each fits file written. Since it is only read once per sequence it should contain data which is valid for the entire sequence, typically telescope poiting information.
If the file could not be read for any reason an error message is inserted as a comment field.