Planet Finder Spectrograph
Specifications
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For more detailed information than the summary specs presented below, please see the SPIE papers. Note that PFS is undergoing upgrades in 2018 that include a new detector (installed February 2018) and a fiber-based pupil slicer (to be installed Fall 2018)

Wavelength range: Fixed format covering 391 to 734nm.

Slits and Resolving Power:

Width (")Length (")Resolving Power Comment
0.32.5127,000Default as of 2018
0.52.576,000Default prior to 2018
0.72.554,000 
0.23.7190,000 
0.33.7127,000 
0.53.776,000 
0.73.754,000 
1.03.738,000 
0.71054,000Orders overlap
3.03.7N/AFor efficiency evaluation
0.73.9N/AFor Wide Flats
0.3-N/APinhole; For Focus
Scale and Dispersion: 0.054 arcsec/pixel, ~0.009 Angstroms/pixel

Velocity precision: 1 meter/sec

Detector: STA1600 CCD, 10K x 10K, 9 micron pixels. Non-linearity data

SpeedRead Noise (e-)Gain (e-/ADU) Readout time (sec)
Normal (250 kHz)3.592.2962
Turbo (100 kHz)4.142.3026
Slit viewer field of view: 38x38 arcsec

Calibration sources: Thorium Argon lamp, Quartz lamp, Iodine absorption cell

Practical faint magnitude limit: Somewhere between V=15 and V=16, limited by star visibility in slit viewer

Efficiency: Peak instrumental efficiency is around 23%
Instrumental efficiency from entrance aperture to detector.

This does not include slit losses, telescope efficiency, or atmospheric absorption, but does include the QE of the CCD.

PFS efficiency
AB magnitude zero point.

This is the AB magnitude of an object from which one expects to receive 1 electron/sec/Angstrom at 1 airmass without a slit. Depending on the airmass, seeing, and choice of slit, actual count rates will be lower.

PFS AB magnitude zero
point

Last modified: 02 August 2018 03:31:22 am.