The fits export now supports a number of extra features.
The fits files are saved automatically if the Saving check box is on. If there is enough time the files are saved during the integration time between loops, otherwise they are saved at the end.
Keyword | Type | Default | Comment |
SIMPLE | bool | T | Yes this is a fits file |
BITPIX | int | 16 | 16bit signed data |
NAXIS | int | 2 | 2d images supported |
NAXIS1 | int | 1024 | Number of pixels in row |
NAXIS2 | int | 1024 | Number of pixels in col |
NRUN | int | 735 | Run Number |
OBJECT | string | NGC512 | Object name |
FILTER | string | Jg | Filter name |
OBSTYPE | string | astro | Observation type |
IMAGTYPE | string | same as above | Same paramter with different name |
IRAFNAME | string | .fits | Filename including .fits but no path |
FILEPATH | string | \\host\dir | Data path |
CAMERA | string | cirsi | Name of camera - just any old string |
DETECTOR | string | hawaii / picnic | Name of detector - generally hawaii or picnic string |
CHIP | int | 1 / 2 / 3 / 4 | Chip number |
QUAD | string | 1 2 3 4 | Active quads in this image |
FPA | string | Array serial number | |
DATE_OBS | string | 1999-0403T 05:32:49 | Sequence started, this time is same for all images in a loop: This is Y2K format YYYYMMDDTHH:MM:SS |
TIME_OBS | int | 51094 | ms since sequence started |
EXP_TIME | int | 25 | Requested integration in seconds |
INT_TIME | float | 25.077 | Actual integration time in seconds |
READRATE | int | 432 | Pixel rate (KHz) |
READMODE | string | RRR / NDR | Readout mode, either read-reset-read or non-destructive read |
NFRAMES | int | 16 | Number of quadrants read in each loop |
FRAME | int | 20 | Current frame in sequence, useful for quadrants |
NLOOPS | int | 1 | Total number of loops |
LOOP | int | 2 | Current loop |
COAVER | bool | T / F | True if this is an average of a set of RRR images |
NCOAVER | int | 0 - | Number of frames in above average |
TOTALNDR | int | 1 - | Total number of reads of each chip |
CURR_NDR | int | 1 - | Current number of read out of above total |
NREADS | int | 1 - | Total number of NDR reads in each loop |
READ in RRR mode | int | 1 - | Current number out of above |
RSTIMAGE | bool | T / F | True if this is the initial reset level image, NDR mode only |
SUBTRACT | bool | T / F | True if reset level has been subtracted |
ROTATE | bool | T | True if image is rotated |
ROTANGLE | int | 0,90,180,270 | Rotation angle |
FLIP_H | bool | T / F | True if image is mirrored E-W |
FLIP_V | bool | T / F | True if image is mirrored N-S |
LINEAR | string | none / file | Filename of linearity correction data, or none for no linearity correction |
SAMVER | float | 4.49 | SAM version number |
PIXVER | float | 5.0 | Pixcel version number and build date |
SAMTYPE | int | 5 | SAM type |
PRE_READ | bool | T / F | True if dummy first read was made |
FLUSHES | int | 32 | Number of flushes before sequence started |
GAIN | float | 0.340 | Estimated gain in e/dn |
CHIPGAIN | float | 0.340 | Factor to multiply internal gain to get display value |
HWGAIN | int | 14 | AM4100 gain setting - arbitrary units |
PIXRATE | int | 13 | AM4100 rate setting - arbitrary units |
BLKLEVEL | int | 100 | AM4100 blacklevel |
Pixcel will insert a text file or partial fits typically header containing values from the telescope control system. It must follow fits format but can have carriage returns allowing it to be created in an editor.
The list of engineering values from pixcel.ini has been removed
to make the fits files a little shorter and simpler, the rate
and gain are still included.