The list of Investigators does not match the STScI records for this program. MAXIMUM DURATION EXCEEDED FOR INTERNAL OR EARTH CALIB VISIT FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser MAXIMUM DURATION EXCEEDED FOR INTERNAL OR EARTH CALIB VISIT FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser 0 ----- Attempting Submission 1 (Wed Jul 16 14:53:05 GMT 2025) ----- long internal orbits are required to obtain the necessary calibration data. These errors are expected and can be ignored. WFC3 UVIS Shutter Monitoring We monitor the WFC3 UVIS shutter performance. The exposures in F555W need to be identical to previous cycles. Images with exposure times ranging from 0.5 to 17 seconds will be used to compare the photometric behavior of each shutter blade, for short vs long exposures and check for shutter shading effects. The first exposure of 0.5sec cannot be used since the lamp would be still heating during this exposure, so we will take a set of three 0.5sec exposures. Internal flats in each of the 4 amps will be used to monitor the repeatability and shutter shading effects. We want to include some wavelength dependence, so this proposal now includes exposures in F814W filter, exposure times for which have been estimated using information from WFC3 ISR 2008-21. Seven Full-frame internal flat field images are collected twice in two different visits, one using F555W and another in F814W using the default tungsten lamp with exposure times of 0.5, 1.0, and 17.0 seconds in order to monitor the shutter and test wavelength dependence. Pairs of flat field images are collected for each exposure time; one using shutter A and another using shutter B. An additional 0.5 exposure is used to heat up the tungsten lamp. 0 false false RESTRICTED The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. /Users/khuynh/Documents/phaseII/2025/OP-cache/17959_phaseII_UVIS_sm-v01.xml (Tic-Visit :proposal-id 17959 :visit-id "01" :proposal-version -1 :trans-version "20250624" :date "15-Jul-2025 15:13:54.0" :trans-errors '(:WARNINGS 1 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 0.0 :data-volume 2021216 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17959 :visit-id "01" :obset-id "01" :pcs-mode "GYRO" ) (Tic-Orbit :proposal-id 17959 :visit-id "01" :orbit-number 1 :pcs-time 0 :si-vis-utilization 0 :al-overhead-at-end 0 :internal-dur-at-end 3348 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) true 1 0 This assumes Tungsten lamp 3. (2800 e-/sec/pix through F555W in TV3 testing) This assumes Tungsten lamp 3. (2800 e-/sec/pix through F555W in TV3 testing) This assumes Tungsten lamp 3. (2800 e-/sec/pix through F555W in TV3 testing) The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. /Users/khuynh/Documents/phaseII/2025/OP-cache/17959_phaseII_UVIS_sm-v02.xml (Tic-Visit :proposal-id 17959 :visit-id "02" :proposal-version -1 :trans-version "20250624" :date "15-Jul-2025 15:13:55.0" :trans-errors '(:WARNINGS 1 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 0.0 :data-volume 2021216 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17959 :visit-id "02" :obset-id "02" :pcs-mode "GYRO" ) (Tic-Orbit :proposal-id 17959 :visit-id "02" :orbit-number 1 :pcs-time 0 :si-vis-utilization 0 :al-overhead-at-end 0 :internal-dur-at-end 3318 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) true 1 0 This assumes Tungsten lamp 3. (20,000 e-/sec/pix through F814W, WFC3 ISR 2008-21) This assumes Tungsten lamp 3. (20,000 e-/sec/pix through F814W, WFC3 ISR 2008-21)