Walden All-Sky Imager

The small, all-sky fisheye spectral imager, is a compact instrument capable of imaging an entire 180° field of view, simultaneously.

Optically, the all-sky field of view is imaged onto a 1392 x 1040 pixel Sony CCD at F/0.95.

A telecentric design ensures that all the chief rays are at normal incidence at the image plane, allowing the use of narrow bandpass interference filters (<2nm) in the five-position filter wheel.

Applications
  • All-sky imaging
  • Auroral imaging and detection
  • Cloud monitoring
  • Astronomical extinction measurements
  • Meteor imaging and detection
  • Aerosol and pollution monitoring
  • Security and surveillance
Features
  • Mounting: vertical (as a mast)
  • Finish: anodized
  • Field of view: 180°
  • Camera: Atik 314L+
    • CCD: Sony ICX285AL
    • 1392 x 1040 pixels
    • 6.45m x 6.45m pixels
  • Chip dimension: 8.9mm x 6.7mm
  • Peak QE: 65% at 540nm
  • Full well capacity: 27,000 e-
  • Dark current: 0.02 e-/s @ 10C ambient
  • USB 2 built-in computer interface download rate: 3.7s
    • Full resolution
  • Computer included
  • Software: Maxim DL or Spectral Skies’ ImageTool
All_Sky_Image_thumb

All-sky image at 656.3nm (Balmer Alpha) taken near Boston, MA Five minute exposure; nebula is the North American Nebula

All-Sky Imager with filter wheel. Images entire 180˚ field of view onto 1392 x 1040 pixel CCD
*Click image for larger view