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'Alopeke EMCCDs

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'Alopeke has two iXon Ultra 888 back-illuminated Electron Multiplying CCDs (EMCCDs).

TypeiXon Ultra 888 EX
Size1024 x 1024
Pixel Size13 μm
Readout speed26 fps @ 1024 x 1024
93 fps @ 512 x 512
697 fps @ 128 x 128
Dark current0.0002 e-/pix/sec
Well depth 80,000 e-
Linearity better than 99.9%
Timestamp accuracy10 ns

Read Noise (e-)
 EMCCD AmplifierConventional Amplifier
Readout Speed (MHz)302010110.1
Without EM13080401263.5
With EM<1<1<1<1--

Pixel binning (1x1, 2x2, 4x4, etc) is supported with the conventional CCD amplifier.

Transmission curves

Gemini Observatory Participants