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Welcome to the WFIRST Dark Energy Performance Calculator (WFDEPC)
Welcome to the WFIRST Exposure Time Calculator (WFETC)
WFDEPC is the Web-based interface for the Wide-Field Infrared Survey Telescope's Dark Energy Performance Calculator. The Calculator is intended for use in optimizing the WFIRST hardware and observing strategy. It runs in three different modes: Gravitational Weak Lensing (WL), Baryonic Acoustic Oscillations (BAO), and Photometric Red Shift Calibration Survey (PZCAL). In each case, it uses known galaxy properties to predict limiting magnitudes and statistical properties (e.g. number counts or redshift distribution) of sources that could be detected by WFIRST (and resolved, in the case of WL). For a full explanation of the functionality, see the
WFDEPC Reference Manual
.
WFETC is the Web-based interface for the Wide-Field Infrared Survey Telescope's Exposure Time Calculator. The Calculator is based upon Chris Hirata's "Space-Based Galaxy Survey Exposure Time Calculator" code, intended for use in optimizing the WFIRST hardware and observing strategy. The code is also the basis for the
WFIRST Dark Energy Performance Calculator
. For a full explanation of the functionality, see the
WFETC Reference Manual
.
WFIRST Dark Energy Performance Calculator (Version 2.0)
WFIRST Exposure Time Calculator (Version 2.0)
Release Notes for Current Version
Download ETC Source Code
Press "Submit" to activate the calculation. Results will appear in this window.
Please be patient. Requests will take at least several minutes to run (~3.0 mins for BAO / ~8.5 mins for WL).
Using the email option will free up the GUI and send you an email notification when the calculation has completed.
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] Mode Specific Inputs
WL Specific Inputs
Sensitivity Only Mode
Filter Throughput
no units
Minimum Resolution Factor
no units
Maximum Ellipticity Error
no units
Galaxy Catalog File
CMC2 - COSMOS Mock Catalog - Update 8/15/2011
CMC1 - S Jouval et al, A&A 504,359 (2009)
[Download File]
BAO Specific Inputs
Significance Cut
no units
Galaxy Population Model
32 - Sobral et al (2012), corrected, best fit
22 - Reduced Geach et al LF, 10/2011 size distribution
20 - Reduced Geach et al LF, 03/2011 size distribution
2 - Geach et al LF, 10/2011 size distribution
0 - Geach et al LF, 03/2011 size distribution
Completeness
no units
SNR Computation
Use Observed SNR
Use Expected SNR
PZCAL Specific Inputs
Significance Cut
no units
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RMS Wavefront Error
microns
Select WL Telescope Configuration File
DRM1
IDRM1U_ImC
JDEM_Omega_nomask_ImC_th
[View File]
Select BAO Telescope Configuration File
DRM1
IDRM1U_SpC
JDEM_Omega_nomask_SpC_th
[View File]
Select PZCAL Telescope Configuration File
DRM1
IDRM1U_SpC
JDEM_Omega_nomask_SpC_th
[View File]
Upload Telescope Configuration File
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] Observing Strategy and Detector Characteristics
Detector Type
H2RG - 32 Channels
H4RG - 32 Channels
H4RG - 64 Channels
Filter Throughput
no units
Pointing Jitter
arcsec rms per axis
Wavelength Minimum
microns
Wavelength Maximum
microns
Single Exposure Time
seconds
Read Noise Floor
effective e- rms per pixel
Dark Current
e-/pix/sec
Ecliptic Latitude
degrees
Ecliptic Longitude Relative to the Sun
degrees (modulo 180)
Galactic Reddening
E(B-V) magnitudes
Number of Exposures
no units
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Send location of Results to this e-mail:
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