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VATT Spectrograph
This optical region spectrograph has AR coated refractive optics, with a beam size at its camera of 125 mm, giving …
slit length: 30 arcsec
wavelength range: 360 - 950 nm
spectral coverage: 100 nm at 0.1 nm resolution
spectral resolutions: 0.1, 0.2, and 0.4 nm with 1 arcsec wide slit
detector: back illuminated, low noise CCD STA0520A, with very nice cosmetics.
STA0520A CCD
2688×512 pixels, 15 microns
ITL Serial Number 8228
Detector operating temperature -110C
Gain = 1.3 e/DN with setting 10
Gain = 2.6 e/DN with setting 5
For both gains the full well is ADC limited (65k DN), so this is 85,000 or 170,000 electrons.
Noise is 3.4 electrons (3.2 in overscan region)
Documentation
Maintenance
Chip QE Curve