Fan Mountain Observatory
31-inch - NSF Fan Mt. NIR Camera

The instrument homepage for FanCam is here.

Telescope:

  • Focal Length: 480 inches
  • Focal ratio: f/16
  • Scale: 16.92 arcsec/mm

Camera:

  • Field of View(FOV): 8.7 arcmin square(1.215 inch square linear)
  • Plate Scale: 0.5098 arcsec/pixel
  • Field Curvature: < 50µm across the FOV
  • Distortion: < 0.1 pixel on 90% of the field, < 0.5 pixels at the corners
  • Limiting Magnitude (10σ in 10 min. on source): 19.0 (J), 18.0 (H) and 17.0 (Ks)
  • Astrometric Accuracy: Picture(soon)
  • Limiting Magnitude in Spectroscopic Mode: Not installed yet
  • Limiting Magnitude in Polarimetric Mode: Not measured

Detector:

      Rockwell Hawaii-I 1024-square HgCdTe array
  • Spectral response: 0.85 - 2.5 µm
  • Pixel size: 18.5 µm
  • Gain: 4.6e-/DN
  • Read Noise: 17e-rms
  • Dark Current: very low, not detected
  • Operability: > 99%
  • Well Capacity: ~ 105e-
  • QE: > 60%

Filter Wheels:

      FanCam has two filter wheels with 8 1-inch diameter filter slots each
  • Filter Wheel 1: J, H, Ks, H2, Br-γ, Y(not installed yet)
  • Filter Wheel 2: K, Pa-β, Fe-II, Polarizer-1, Polarizer-2, Grism-1(not installed yet), Grism-2(proposed)
      More information on the filters can be obtained at the Fan Mountain Filters Webpage.

Staff Contact: