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Discontinued Starlight Xpress CoStar Autoguider

Starlight Xpress CoStar Autoguider

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SKU: CoStar
Manufacturer: Starlight Xpress

This product is no longer available
The Starlight Xpress CoStar is a dual purpose camera that works well for guiding and planetary imaging. 

The CoStar is a monochromatic guider featuring a 1304 x 1024 array of small 5.2 micron pixels. These smaller pixels will yield better planetary resolution at the expense of some sensitivity for guiding. This is a fine dual purpose camera, but customers demanding the utmost sensitivity in an autoguider should opt for the Lodestar. Se the photographic comparisson below for further explanation.

CoStar Specifications:

  • Imager type: Aptina MT9M001 mono cmos chip with low dark current and anti-blooming.
  • Full resolution Pixel data: Pixel size: 5.2uM x 5.2uM, Image format: 1304 x 1024 pixels
  • Image area: 6.66mm (Horizontal) x 5.32mm (Vertical)
  • Spectral Response: QE max at 620nM (~65%), 35% at 400nM and 770nM
  • Readout Noise: Less than 40 electrons RMS - typically only 20 electrons
  • Anti-blooming: Overload margin greater than 1000x
  • Dark current: Dark frame saturation time greater than 10 minutes. Less than 1 electrons/second @ + 10C ambient
  • Data format: 10 bits
  • Computer Interface: Built-in USB 2.0 compatible interface
  • Image download time: Typically 0.1 seconds at full resolution using USB 2.0
  • Power requirements: USB powered
  • Cooling system: Ambient air cooling
  • Size: 32 x 60mm black anodised aluminium barrel with 25 x 0.75mm 'C mount' thread at the CCD window end & input/output plugs at rear
  • Weight: approx. 45g
Sample Costar image

A single raw 5 second Costar exposure through an F5 80mm aperture guide scope.

Sample Lodestar image

The same star field taken with the Lodestar, using the same scope and exposure time.

The Lodestar is clearly more sensitive, with less noise, but the CoStar still works very well as a guider and also makes an effective Lunar/Planetary camera.

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