14538( 3) - 07-Sep-2016 13:47:34 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14538 Version: 3 Check-in Time: 07-Sep-2016 13:47:34 STScI Edit Number: 0 Title WFC3 IR Linearity Monitor ------------------------------------------------------------------------------------ Type Cycle CAL/WFC3 24 ------------------------------------------------------------------------------------ Investigators Contact? PI: Clare Shanahan Space Telescope Science Institute Y CoI: Dr. Sylvia M. Baggett Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract To monitor the non-linearity of the WFC3/IR detector, we observe Tungsten internal flats though the F127M filter. Any changes measured in the non-linearity will be updated in the calibration reference file, crucial to providing a correction for accurate photometry. This program is a continuation of the cycle 23 (program 14375) Linearity calibration program. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will take Tungsten internal flat fields throught the F127M filter to measure the non-linearity of each pixel of the WFC3/IR detector. In order to study the non-linear behavior at all signal levels up the ramp, we vary the sample sequence so that we have six visits with SPARS25 and four visits with SPARS10. Each visit is identical in structure and begins with a dark current observation. This acts as a monitor of persistance from previous exposures and allows the F126N to move into position before the Tungsten lamp is turned on, a safeguard against persistence induced by a grism or wide band filter rotating through the beam. The two filters (F126N and F127M) used in this program should let in too little flux to trigger persistence. Next, while the lamp warms up, an internal flat field is taken through F126N. This warm-up flat is critical for an accurate non-linearity measurement, which requires a very stable flux for the entirety of the exposure. After the warm-up flat, a final flat field, which will be used to measure the non-linearity, is taken through the F127M filter. Starting in cycle 23, a trailing dark (using SPARS25, nsamp=15) is taken after the final flat in order to measure decay of persistance. This trailing dark is compatible with the IR dark calibration program and can be used as data. ------------------------------------------------------------------------------------ 14538( 3) - 07-Sep-2016 13:47:34 - [ 2] Visit: 01 (SPARS25a) Visit Requirements: BEFORE 01-SEP-2017 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=11 1 DEF CUM (252.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS10, NSAMP=6 1 DEF CUM (52.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 14538( 3) - 07-Sep-2016 13:47:34 - [ 3] Visit: 02 (SPARS25b) Visit Requirements: BEFORE 01-SEP-2017 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=11 1 DEF CUM (252.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS10, NSAMP=6 1 DEF CUM (52.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 14538( 3) - 07-Sep-2016 13:47:34 - [ 4] Visit: 03 (SPARS25c) Visit Requirements: BEFORE 01-SEP-2017 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=11 1 DEF CUM (252.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS10, NSAMP=6 1 DEF CUM (52.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 14538( 3) - 07-Sep-2016 13:47:34 - [ 5] Visit: 04 (SPARS10a) Visit Requirements: BEFORE 01-SEP-2017 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS10, NSAMP=15 1 DEF CUM (142.946 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 14538( 3) - 07-Sep-2016 13:47:34 - [ 6] Visit: 05 (SPARS10b) Visit Requirements: BEFORE 01-SEP-2017 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS10, NSAMP=15 1 DEF CUM (142.946 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 14538( 3) - 07-Sep-2016 13:47:34 - [ 7] Visit: 06 (SPARS10c) Visit Requirements: BEFORE 01-SEP-2017 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS10, NSAMP=15 1 DEF CUM (142.946 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 14538( 3) - 07-Sep-2016 13:47:34 - [ 8] Visit: 07 (SPARS10d) Visit Requirements: BEFORE 01-SEP-2017 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS10, NSAMP=15 1 DEF CUM (142.946 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 14538( 3) - 07-Sep-2016 13:47:34 - [ 9] Visit: 08 (SPARS25d) Visit Requirements: BEFORE 01-SEP-2017 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=11 1 DEF CUM (252.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS10, NSAMP=6 1 DEF CUM (52.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 14538( 3) - 07-Sep-2016 13:47:34 - [ 10] Visit: 09 (SPARS25e) Visit Requirements: BEFORE 01-SEP-2017 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=11 1 DEF CUM (252.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS10, NSAMP=6 1 DEF CUM (52.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 14538( 3) - 07-Sep-2016 13:47:34 - [ 11] Visit: 10 (SPARS25f) Visit Requirements: BEFORE 01-SEP-2017 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=11 1 DEF CUM (252.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS10, NSAMP=6 1 DEF CUM (52.937 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 14538( 3) - 07-Sep-2016 13:47:34 - [ 12] Summary Form for Proposal 14538 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=11, NSAMP=15, NSAMP=2, NSAMP=3, NSAMP=6, SAMP-SEQ=SPARS10, SAMP-SEQ=SPARS100, SAMP-SEQ=SPARS25, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BEFORE 01-SEP-2017 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements BLANK, F126N, F127M ------------------------------------------------------------------------------------------------------------------------------------ Target Names DARK, TUNGSTEN ------------------------------------------------------------------------------------------------------------------------------------