Palomar High Angular Resolution Observer (PHARO) Technical Specifications

View the original specs page.

Status: Observatory Instrument


    Contents

  1. Detector chip
  2. Wavelength range, limiting spatial resolution
  3. Imaging scale
  4. Filters
  5. Resolving power
  6. Slits
  7. Coronographic Observations

1. Detector Chip

  • Rockwell, 1024 × 1024 HAWAII HgCdTe.
  • 1 to 2.5 µm.
  • Read noise < 10 e.

2. Wavelength Range, Limiting Spatial Resolution

BandP200 diffraction limit
J-band (1.25 µm)0.052″
H-band (1.65 µm)0.068″
K-band (2.22 µm)0.092″

3. Imaging Scale

  • 0.040″/pixel.
  • 0.025″/pixel.

4. Filters

  • J, H, H cont, K, K cont, Ks.
  • assorted narrow-band (~1%); Brγ, CH4 short, CH4 long, Fe II, ND 1%, ND 0.1%.

5. Resolving Power (grism mode, 0.040″/pixel)

1500 (spanning any one of J or H or K bands) with narrow slit.

6. Slits

  • 0.13″.
  • 0.26″.
  • 0.52″.

7. Coronographic Observations

  • Focal-plane (circular occulting) masks; 0.41″, 0.91″.
  • Pupil-plane stops.

For more detailed instrument specs go to Pharo Page.

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PHARO Specs / v 2.0
Last updated: 16 June 2015 ACM