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nobody

19 Iun 2014 18:09



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"Sony have now upgraded the ICX429 to the ICX829, with considerably improved QE and read noise. This new 'Exview 2' chip approximately doubles the Lodestar sensitivity and adds nearly a full star magnitude to the minimum guide star brightness."

nu de doua ori, de aproape de 2.5 ori  :)

In principiu au marit gain-ul de 2 ori  :lol:
Au redus si read-out noise, dar acest lucru o avantajeaza doar la expuneri scurte.


CCD type: Lodestar - ICX429AL, Lodestar x2 - ICX829 Sony EXview interline CCDs.
CCD Full resolution Pixel data: Pixel size: 8.2µM x 8.4µM, Image format: 752 x 580 pixels
CCD Image area: 6.4mm (Horizontal) x 4.75mm (Vertical).
CCD quality: Grade 1
Spectral Response: Lodestar QE max at 620nM (~65%), 35% at 400nM and 770nM
Spectral Response: Lodestar x2 QE max at 620nM (~77%), 45% at 400nM and 770nM
Readout Noise: Less than 15 electrons RMS - typically only 10 electrons (Lodestar) or 6 electrons (Lodestar x2).
Full-well capacity: Greater than 50,000 e- (unbinned)
Anti-blooming: Overload margin greater than 1000x.
Dark current: Dark frame saturation time greater than 1 hour. Less than 0.1 electrons/second @ + 10°C ambient.
Data format: 16 bits.
System gain: 0.9 electrons per ADU (Lodestar),  0.4 electrons per ADU (Lodestar x2)
http://www.modernastronomy.com/camerasGuider.html