PROCEDURE: 3h

TITLE: Internal calibration lamp flats (HRC)

CATEGORY: Verification

PURPOSE: (1) Test whether tungsten calibration lamp works and provides
uniform illumination.  (2) Test spectral model for Tungsten lamps.  Only
need to do this for a few broad band filters

FREQUENCY: Run once for each lamp at nominal environmental T.

DETECTOR: HRC

PREREQUISITES: none

HARDWARE REQUIREMENTS: none

SOFTWARE REQUIREMENTS: none

COMMAND MODE: SMS (done)

PROCEDURE/EXPOSURES:  
        GAIN = 2
        Turn tungsten lamp on (see variants below)
        1.  bias                0s
        2.  F250W             600s  (probably will get only ~1100 e-)
        3.  SDSS g              5s
        4.  SDSS r              1s
        5.  SDSS i            0.5s
        6.  SDSS z            0.5s
        7.  bias                0s

VARIANTS:       a- Tungsten #3    JTVH3A_1.SMS
                b- Tungsten #4    JTVH3B_1.SMS

TOTAL EXPOSURES: 7

TOTAL TIME: setup + 7*overhead + 607s = 0.57hr
        (setup = 10min, overhead = 2min)

ANALYSIS:  standard statistical analysis.  Compare count rate to model.