NICMOS Reference File Tables
Reference files used by the NICMOS calibration pipeline (CALNICA) are updated on a regular basis. Current reference files files can be retrieved from the HST archive, or downloaded directly from the nref directory. If you choose to access the files via this ftp server, keep in mind that there is a known bug in trying to access files via ftp server using Safari. The recommended browser is Firefox.
If you would like to receive an e-mail every time a new NICMOS reference file is delivered and the database is updated,
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| Reference File Type | Extension | Header Keyword | Camera |
|---|---|---|---|
|
Bad Pixel Masks Masks for grot and bad pixels. More... |
msk | MASKFILE | All |
|
Read Noise Files Readout noise for each pixel as the 1 standard deviation noise level in electrons. More... |
noi | NOISFILE | All |
|
Dark Files Signal detected in the absence of photons from the sky. More... |
drk | DARKFILE | All |
|
Temperature Dependent Darks Temperature dependent signal detected in the absence of photons from the sky. More... |
tdd | TEMPFILE | All |
|
Linearity Correction Files Corrects for the non-linear response of the detectors and contains the saturation for each pixel. More... |
lin | NLINFILE | All |
|
Flat Field Files Static flatfield reference files. More... |
flt | FLATFILE | All |
|
Temperature Dependent Flat Fields Temperature dependent flatfields. More... |
tdf | TDFFILE | All |
|
Background Illumination Pattern Files Dummy files, needed for CALNICB. More... |
ilm | ILLMFILE | All |
|
Photometric Calibration Tables Contain the photometry parameters for all observation modes. More... |
pht | PHOTTAB | All |
|
Geometric Distortion Coefficients Table Used in correcting geometric distortion of image mode data. More... |
idc | IDCTAB | All |
|
Persistence Model Files Ring median of the BEP (Bright earth persistence) image. More... |
pmd | PMODFILE | NIC2 |
|
Persistence Mask Files Combination of the bad pixel list with the 35x35 in the corners. More... |
pmk | PMSKFILE | NIC2 |
|
Nonlincor Zeropoint Scaling Table Ratio, for each filter, in zero point count rate before and after applying rnlincor. More... |
zpr | ZPRATAB | All |
|
Nonlinearity Power Law Tables The power law slope of count rate non-linearity at a number of wavelengths. More... |
nlc | RNLCORTB | All |
|
Special Darks for SAACLEAN Darks used by saaclean. More... |
sdk | SAADFILE | All |
|
SAA Darks Special darks taken after SAA passage. More... |
--- | --- | N/A |
|
ST-ECF Grism Calibration Files Inverse sensitivity and wavelength calibration data for grisms. More... |
--- | --- | NIC3 |