14110( 7) - 26-Apr-2016 12:13:16 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14110 Version: 7 Check-in Time: 26-Apr-2016 12:13:16 STScI Edit Number: 1 Title Charaterizing the atmosphere of the enlarged Neptune-mass planet HAT-P-26b ------------------------------------------------------------------------------------ Type Cycle GO 23 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. David Kent Sing University of Exeter Y CoI: Prof. Jonathan Fortney University of California - Santa Cruz N CoI: Dr. Thomas M Evans University of Exeter N CoI: Dr. Tiffany Kataria Jet Propulsion Laboratory N CoI: Dr. Eric David Lopez University of Edinburgh, Institute for N Astronomy CoI: Dr. Nikolay Nikolov University of Exeter N CoI: Dr. Hannah Ruth Wakeford NASA Goddard Space Flight Center N ------------------------------------------------------------------------------------ Abstract Using transits to obtain transmission spectra is a powerful technique to enable detailed studies of exoplanet atmospheres. The Neptune-mass exoplanet HAT-P-26b is one of a small handful of low-mass planets currently accessible to atmospheric measurements. As a large-radius Neptune-mass planet, the planet's low bulk density indicates it must have a substantial atmosphere, with a high hydrogen fraction likely. The atmosphere could have arisen from many different sources resulting in a wide range of possibilities, including ones dominated by hydrogen or heavier species such as water. As the measured mass and radius of a planet do not uniquely specify the atmospheric composition, transmission spectroscopy is the only way to further characterize its chemical makeup. The HST observations proposed here will carry out these vital initial atmospheric observations, with a broad wavelength range covering optical to near-IR sensitive to the expected atmospheric features of water, methane, sodium, potassium, and Rayleigh scattering. With only one in five low-mass exoplanets probed with HST currently showing spectral features, HAT-P-26b is one of the best current candidates likely to have large signals given its large predicted hydrogen fraction. With both optical and near-IR spectra, these observations will measure the atmospheric scale height and definitively determine if the exoplanet has an atmosphere with substantial hydrogen, as predicted by thermal evolution models. HAT-P-26b represents a bridge between the featureless spectra observed in a number of the smaller sub-Neptune/super-Earth exoplanets, and the large-amplitude features observed in hot Jupiters. ------------------------------------------------------------------------------------ Observations Description ------------------------ With only one in five low-mass exoplanets probed with HST currently showing spectral features, HAT-P-26b is one of the best current candidates likely to have large signals given its large predicted hydrogen fraction. The HST observations proposed here will carry out these vital initial atmospheric observations, with a broad wavelength range covering optical to near-IR sensitive to the expected atmospheric features of water, methane, sodium, potassium, and Rayleigh scattering. 14110( 7) - 26-Apr-2016 12:13:16 - [ 2] Our immediate scientific objectives are to: - Characterize the Neptune-mass exoplanet HAT-P-26b by directly measuring the atmospheric scale height, distinguishing between H and metal-rich compositions - Test the hypothesis that enlarged low-mass exoplanets have H-rich atmospheres - Identify the expected molecular species of H2O and CH4 - Search for optical Rayleigh scattering signatures of hazes or clouds Our further strategic scientific aims are to: - Constrain the abundances of H2O and CH4 searching for super-solar abundances - Probe the alkali metal and CH4 chemistry in a warm Neptune-mass planet Observing Strategy We will use the STIS spectrograph to cover the optical range sensitive to Rayleigh scattering and the alkali metals Na and K, as well as the WFC3 for near-IR coverage which is strongly sensitive to water and methane features. We will repeat our successful observing strategies in which we have now perfected very high S/N optical and near-IR transiting observations with HST (PI Sing: GO-12473, GO-11572, GO-11117; e.g. Sing et al. 2015, Wakeford et al. 2013). We propose to observe HAT-P-26b with both the STIS/G750L and WFC3/G141 during one transit each, each visit consisting of five consecutive orbits (10 total). The spirit of transit observations is to attempt to gather as many spectra as possible before, during, and after a transit event, with each image as identical as possible. As a transit observation consists of measuring a drop in stellar flux during the event, identical exposures are resistant to uncertainties in flat-fielding and very high photometric precisions are possible. The first orbit is expected to have systematically low flux, as consistently observed in previous STIS and WFC3 programs. This is due to telescope thermal relaxation, will likely not be utilized in our study, and is not included in our S/N calculations. This is a well-known phenomenon, and all other similar transiting HST programs over the past 14 years have adopted this strategy, which circumvents the un-correctable systematic errors in the first orbit. During a visit, two orbits will be used to determine the baseline flux, one before and one after transit, while two occur during the transit event. Signal-To-Noise STIS: We will use the STIS and G750L gratings to cover the wavelength range from 5500-10200 Ang and use the 52'x2' slit to minimize slit losses. As we have done for GO-12473, we will adopt exposure times close to 279 seconds, with a sub-array size of 128 for faster readout, which will give high S/N per image as well as sufficient time sampling of the HST orbital-phase trend such that it can be modeled and removed successfully. There will not be any gaps for buffer dumps. We used the ETC to calculate the count-rate and S/N levels for HAT-P-26b with the STIS G750L grating. While the ETC error budget is dominated by photon-noise, this error estimation is realistic, as the STIS instrument has repeatedly demonstrated the ability to produce near-Poisson limited high S/N photometric light-curves (see Sing et al. 2011, 2013, 2015). For each orbit, we will take 10 exposures of 279 seconds each, with 20 second overheads. For each exposure, S/N levels per resolution element of 400 at 7500 Ang are reached for the G750L. WFC3: The visit using the WFC3/G141 will use the same observational strategy as our program GO-12473, which uses spacial scanning mode to dramatically increase 14110( 7) - 26-Apr-2016 12:13:16 - [ 3] observational overheads and obtain vastly higher S/N levels. During spacial scan mode, the telescope is slowly slewed in the cross-dispersion direction while the camera is exposing. The spectra become spread out over a large pixel area of the detector, providing very high S/N levels and vastly improved duty cycles. We will use exposure times close to 90 seconds, which give S/N levels between 1, 414 to 1, 233 per resolution element between 1.15 to 1.65 um. With overheads and using subarray readouts, 27 exposures can be taken during each orbit. WFC3: The visit using the WFC3/G141 will use the same observational strategy as our program GO-12473, which uses spacial scanning mode to dramatically increase observational overheads and obtain vastly higher S/N levels. During spacial scan mode, the telescope is slowly slewed in the cross-dispersion direction while the camera is exposing. The spectra become spread out over a large pixel area of the detector, providing very high S/N levels and vastly improved duty cycles. We will use exposure times close to 90 seconds, which give S/N levels between 1, 414 to 1, 233 per resolution element between 1.15 to 1.65 um. With overheads and using subarray readouts, 27 exposures can be taken during each orbit. --------- Additional Comments ---------- STIS visits use the G750L with Wavecal=No, as in our previous similar programs such as GO 12473 and GO 11740, such that the duty cycle and photometric precision is maximised and the thermal breathing trends can be efficiently removed, which is only possible with an uninterrupted photometric time-series. Also as in GO 12473, the other STIS settings are set to maximize counts and reduce readout time overheads. CR-SPLIT=NO, Gain=4, Sizeaxis2=128. ------------------------------------------------------------------------------------ 14110( 7) - 26-Apr-2016 12:13:16 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HAT-P-26 STAR, EXTRA-SOLAR RA=14H12M37.5370S, J2000 V = 11.76 PLANETARY SYSTEM, K DEC=+04D03'36.13" V-IV Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0026132247898173456 -0.1443 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 14110( 7) - 26-Apr-2016 12:13:16 - [ 5] Visit: 01 (HAT-P-26 G750L) Visit Requirements: SCHED 50%; Period 4.234516 D AND ZERO-PHASE HJD2455304.65122 On Hold Comments: Additional Comments: HAT-P-26. G750L. STIS visit. It is essential that the five orbits be scheduled in a coninuous block, free of the SAA. 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 HAT-P-26 STIS/CCD ACQ F28X50LP MIRROR GAIN=4 1 1.5 S (1.5 PHASE 0.9555 TO 0.9595; S) GS ACQ SCENARIO BASE1B3 ------------------------------------------------------------------------------------------------------------------------------------ 2 HAT-P-26 STIS/CCD ACCUM 52X2 G750L 7751 CR-SPLIT=NO, GAIN=4, 1 1 S (1 S) SIZEAXIS2=128.0, WAVECAL=NO Comments: Short exposure to minimize instrument systematic of first exposure in each orbit. ------------------------------------------------------------------------------------------------------------------------------------ 3 HAT-P-26 STIS/CCD ACCUM 52X2 G750L 7751 CR-SPLIT=NO, GAIN=4, 8 267 S SIZEAXIS2=128.0, WAVECAL=NO (2136 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 HAT-P-26 STIS/CCD ACCUM 52X2 G750L 7751 CR-SPLIT=NO, GAIN=4, 1 1 S (1 S) SIZEAXIS2=128.0, WAVECAL=NO Comments: Short exposure to minimize instrument systematic of first exposure in each orbit. ------------------------------------------------------------------------------------------------------------------------------------ 5 HAT-P-26 STIS/CCD ACCUM 52X2 G750L 7751 CR-SPLIT=NO, GAIN=4, 10 267 S SIZEAXIS2=128.0, WAVECAL=NO (2670 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 HAT-P-26 STIS/CCD ACCUM 52X2 G750L 7751 CR-SPLIT=NO, GAIN=4, 1 1 S (1 S) SIZEAXIS2=128.0, WAVECAL=NO Comments: Short exposure to minimize instrument systematic of first exposure in each orbit. ------------------------------------------------------------------------------------------------------------------------------------ 7 HAT-P-26 STIS/CCD ACCUM 52X2 G750L 7751 CR-SPLIT=NO, GAIN=4, 10 267 S SIZEAXIS2=128.0, WAVECAL=NO (2670 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 HAT-P-26 STIS/CCD ACCUM 52X2 G750L 7751 CR-SPLIT=NO, GAIN=4, 1 1 S (1 S) SIZEAXIS2=128.0, WAVECAL=NO Comments: Short exposure to minimize instrument systematic of first exposure in each orbit. ------------------------------------------------------------------------------------------------------------------------------------ 9 HAT-P-26 STIS/CCD ACCUM 52X2 G750L 7751 CR-SPLIT=NO, GAIN=4, 10 267 S SIZEAXIS2=128.0, WAVECAL=NO (2670 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 HAT-P-26 STIS/CCD ACCUM 52X2 G750L 7751 CR-SPLIT=NO, GAIN=4, 1 1 S (1 S) SIZEAXIS2=128.0, WAVECAL=NO Comments: Short exposure to minimize instrument systematic of first exposure in each orbit. ------------------------------------------------------------------------------------------------------------------------------------ 14110( 7) - 26-Apr-2016 12:13:16 - [ 6] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 11 HAT-P-26 STIS/CCD ACCUM 52X2 G750L 7751 CR-SPLIT=NO, GAIN=4, 10 267 S SIZEAXIS2=128.0, WAVECAL=NO (2670 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 WAVE STIS/CCD ACCUM 52X0.2 G750L 7751 1 DEF (0 S) Comments: Explicit WAVECAL, auto-waves disabled to increase duty cycle ------------------------------------------------------------------------------------------------------------------------------------ 13 CCDFLAT STIS/CCD ACCUM 0.3X0.09 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 NONE STIS/CCD ACCUM 0.3X0.09 G750L 7751 LAMP=TUNGSTEN, CR-SPLIT=NO, 4 240 S (960 GAIN=4, SIZEAXIS2=128.0 S) Comments: Expected peak count level = 50, 000 e- ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HAT-P-26 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A HAT-P-26 2 STIS/CCD ACCUM 52X2 G750L 7751 none none none none 1 N/A HAT-P-26 3 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 1 N/A HAT-P-26 3 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 1 N/A HAT-P-26 3 STIS/CCD ACCUM 52X2 G750L 7751 none none 3 none 1 N/A HAT-P-26 3 STIS/CCD ACCUM 52X2 G750L 7751 none none 4 none 1 N/A HAT-P-26 3 STIS/CCD ACCUM 52X2 G750L 7751 none none 5 none 1 N/A HAT-P-26 3 STIS/CCD ACCUM 52X2 G750L 7751 none none 6 none 1 N/A HAT-P-26 3 STIS/CCD ACCUM 52X2 G750L 7751 none none 7 none 1 N/A HAT-P-26 3 STIS/CCD ACCUM 52X2 G750L 7751 none none 8 none 1 N/A HAT-P-26 4 STIS/CCD ACCUM 52X2 G750L 7751 none none none none 2 N/A HAT-P-26 5 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 2 N/A HAT-P-26 5 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 2 N/A HAT-P-26 5 STIS/CCD ACCUM 52X2 G750L 7751 none none 3 none 2 N/A HAT-P-26 5 STIS/CCD ACCUM 52X2 G750L 7751 none none 4 none 2 N/A HAT-P-26 5 STIS/CCD ACCUM 52X2 G750L 7751 none none 5 none 2 N/A HAT-P-26 5 STIS/CCD ACCUM 52X2 G750L 7751 none none 6 none 2 N/A HAT-P-26 5 STIS/CCD ACCUM 52X2 G750L 7751 none none 7 none 2 N/A HAT-P-26 5 STIS/CCD ACCUM 52X2 G750L 7751 none none 8 none 2 N/A HAT-P-26 5 STIS/CCD ACCUM 52X2 G750L 7751 none none 9 none 2 N/A HAT-P-26 5 STIS/CCD ACCUM 52X2 G750L 7751 none none 10 none 2 N/A HAT-P-26 6 STIS/CCD ACCUM 52X2 G750L 7751 none none none none 3 N/A HAT-P-26 7 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 3 N/A HAT-P-26 7 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 3 N/A HAT-P-26 7 STIS/CCD ACCUM 52X2 G750L 7751 none none 3 none 3 N/A HAT-P-26 7 STIS/CCD ACCUM 52X2 G750L 7751 none none 4 none 3 N/A HAT-P-26 7 STIS/CCD ACCUM 52X2 G750L 7751 none none 5 none 3 N/A HAT-P-26 7 STIS/CCD ACCUM 52X2 G750L 7751 none none 6 none 3 N/A 14110( 7) - 26-Apr-2016 12:13:16 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HAT-P-26 7 STIS/CCD ACCUM 52X2 G750L 7751 none none 7 none 3 N/A HAT-P-26 7 STIS/CCD ACCUM 52X2 G750L 7751 none none 8 none 3 N/A HAT-P-26 7 STIS/CCD ACCUM 52X2 G750L 7751 none none 9 none 3 N/A HAT-P-26 7 STIS/CCD ACCUM 52X2 G750L 7751 none none 10 none 3 N/A HAT-P-26 8 STIS/CCD ACCUM 52X2 G750L 7751 none none none none 4 N/A HAT-P-26 9 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 4 N/A HAT-P-26 9 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 4 N/A HAT-P-26 9 STIS/CCD ACCUM 52X2 G750L 7751 none none 3 none 4 N/A HAT-P-26 9 STIS/CCD ACCUM 52X2 G750L 7751 none none 4 none 4 N/A HAT-P-26 9 STIS/CCD ACCUM 52X2 G750L 7751 none none 5 none 4 N/A HAT-P-26 9 STIS/CCD ACCUM 52X2 G750L 7751 none none 6 none 4 N/A HAT-P-26 9 STIS/CCD ACCUM 52X2 G750L 7751 none none 7 none 4 N/A HAT-P-26 9 STIS/CCD ACCUM 52X2 G750L 7751 none none 8 none 4 N/A HAT-P-26 9 STIS/CCD ACCUM 52X2 G750L 7751 none none 9 none 4 N/A HAT-P-26 9 STIS/CCD ACCUM 52X2 G750L 7751 none none 10 none 4 N/A HAT-P-26 10 STIS/CCD ACCUM 52X2 G750L 7751 none none none none 5 N/A HAT-P-26 11 STIS/CCD ACCUM 52X2 G750L 7751 none none 1 none 5 N/A HAT-P-26 11 STIS/CCD ACCUM 52X2 G750L 7751 none none 2 none 5 N/A HAT-P-26 11 STIS/CCD ACCUM 52X2 G750L 7751 none none 3 none 5 N/A HAT-P-26 11 STIS/CCD ACCUM 52X2 G750L 7751 none none 4 none 5 N/A HAT-P-26 11 STIS/CCD ACCUM 52X2 G750L 7751 none none 5 none 5 N/A HAT-P-26 11 STIS/CCD ACCUM 52X2 G750L 7751 none none 6 none 5 N/A HAT-P-26 11 STIS/CCD ACCUM 52X2 G750L 7751 none none 7 none 5 N/A HAT-P-26 11 STIS/CCD ACCUM 52X2 G750L 7751 none none 8 none 5 N/A HAT-P-26 11 STIS/CCD ACCUM 52X2 G750L 7751 none none 9 none 5 N/A HAT-P-26 11 STIS/CCD ACCUM 52X2 G750L 7751 none none 10 none 5 N/A WAVE 12 STIS/CCD ACCUM 52X0.2 G750L 7751 none none none none 5 N/A CCDFLAT 13 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 5 N/A CCDFLAT 13 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 5 N/A NONE 14 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 1 none 5 N/A NONE 14 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 2 none 5 N/A NONE 14 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 3 none 5 N/A NONE 14 STIS/CCD ACCUM 0.3X0.09 G750L 7751 none none 4 none 5 N/A 14110( 7) - 26-Apr-2016 12:13:16 - [ 8] Visit: 02 (HAT-P-26 WFC3) Visit Requirements: Period 4.2345005277 D AND ZERO-PHASE HJD2456363.277385 On Hold Comments: Additional Comments: WFC3 IR transit of HAT-P-26. It is essential that the five orbits be scheduled in a coninuous block, free of the SAA. We will use the spacial scanning mode to lengthen the spectrum along the slit during the exposures, to avoid saturation on relatively long exposures. This mode greatly increases the efficiency. 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 HAT-P-26 WFC3/IR MULTIAC GRISM256 F130N SAMP-SEQ=RAPID, NSAMP=7 1 DEF (1.945 PHASE 0.9540 TO 0.9595 CUM S) Comments: Direct image for wavelegnth calibration. Phase constrained so transit occurs between 2nd and 3rd contact. ------------------------------------------------------------------------------------------------------------------------------------ 2 HAT-P-26 WFC3/IR MULTIAC GRISM256 G102 SAMP-SEQ=SPARS10, NSAMP=15 89 DEF POS TARG 0.0, 0.0; CUM (9178.448 SPATIAL SCAN 0.0315, S) 90.0 Degrees, Forward ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HAT-P-26 1 WFC3/IR MULTIAC GRISM256 F130N none none none none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 1 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 2 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 3 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 4 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 5 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 6 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 7 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 8 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 9 none 1 N/A CUM 14110( 7) - 26-Apr-2016 12:13:16 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 10 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 11 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 12 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 13 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 14 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 15 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 16 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 17 none 1 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 18 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 19 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 20 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 21 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 22 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 23 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 24 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 25 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 26 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 27 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 28 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 29 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 30 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 31 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 32 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 33 none 2 N/A CUM 14110( 7) - 26-Apr-2016 12:13:16 - [ 10] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 34 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 35 none 2 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 36 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 37 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 38 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 39 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 40 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 41 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 42 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 43 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 44 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 45 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 46 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 47 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 48 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 49 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 50 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 51 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 52 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 53 none 3 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 54 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 55 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 56 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 57 none 4 N/A CUM 14110( 7) - 26-Apr-2016 12:13:16 - [ 11] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 58 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 59 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 60 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 61 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 62 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 63 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 64 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 65 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 66 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 67 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 68 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 69 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 70 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 71 none 4 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 72 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 73 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 74 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 75 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 76 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 77 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 78 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 79 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 80 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 81 none 5 N/A CUM 14110( 7) - 26-Apr-2016 12:13:16 - [ 12] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 82 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 83 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 84 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 85 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 86 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 87 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 88 none 5 N/A CUM HAT-P-26 2 WFC3/IR MULTIAC GRISM256 G102 none none 89 none 5 N/A CUM 14110( 7) - 26-Apr-2016 12:13:16 - [ 13] Summary Form for Proposal 14110 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 0.3X0.09, 52X0.2, 52X2, F28X50LP, GRISM256 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO, GAIN=4, LAMP=TUNGSTEN, NSAMP=15, NSAMP=7, SAMP-SEQ=RAPID, SAMP-SEQ=SPARS10, SIZEAXIS2=128.0, WAVECAL=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1B3, PHASE 0.9540 TO 0.9595, PHASE 0.9555 TO 0.9595, POS TARG 0.0, 0.0, Period 4.2345005277 D AND ZERO-PHASE HJD2456363.277385, Period 4.234516 D AND ZERO-PHASE HJD2455304.65122, SCHED 50%, SPATIAL SCAN 0.0315, 90.0 Degrees, Forward ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F130N, G102, G750L, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names CCDFLAT, HAT-P-26, NONE, WAVE ------------------------------------------------------------------------------------------------------------------------------------