Alta U77 Specifications   Printer friendly PDF Alta U77 Specifications The Alta U77 has a midband or broadband back-illuminated full frame sensor with very high quantum efficiency and excellent dynamic range. Low noise and large field-of-view are ideal for spectroscopy and star tracking. 512 x 512 array, 24 x 24 micron pixels 2 MHz 12-bit and 700 kHz 16-bit digitization 32 Mbyte camera memory Fast focus mode: multiple subframes per second USB 2.0 interface: no plug in cards or external controllers Programmable, intelligent cooling to 50-55C below ambient (D02 housing) / 65-70C below ambient (D09 housing) Binning up to 10 Horizontal x 512 Vertical Subarray readout and fast sequencing modes Precision time delayed integration readout Programmable fan speed for low / zero vibration Two serial port outputs for control of peripheral devices General purpose programmable I/O port External triggering and strobe controls ActiveX drivers included with every system Field upgradeable firmware Fused silica windows Runs from single 12V supply with input voltage monitor Compact enclosure Programmable status indicators MaxIm DL/CCD and CCDSoft software packages are offered at special prices when purchased at the same time as a camera system. CCD Specifications CCD CCD77-00 Array Size (pixels) 512 x 512 Pixel size 24 x 24 microns Imaging area 12.3 x 12.3 mm (151.3 mm2) Imaging diagonal 17.38 mm Linear Full Well (typ.) 350,000 e- Dynamic Range >99 dB Camera System Performance PC Interface USB 2.0 Max. Cable length 5 meters between hubs; 5 hubs maximum (max. total of 30m) Digital resolution 12 bits at 2 MHz and 16 bits at 700 kHz System Noise (typ.) 2 counts at 2 MHz; 10 e- RMS at 700 kHz Pixel Binning 1x1 to 10x1024 on-chip Exposure Time 20 milliseconds to 183 minutes (2.56 microsecond increments) Image Sequencing 1-65535 image sequences under software control Frame Sizes Full frame, subframe, focus mode Cooling Thermoelectric cooler with forced air. Maximum cooling 50-55° C below ambient temperature (D02 housing); 70-75C below ambient (D09 housing) Temperature Stability ±0.1° C Dark Current (typical) 0.8 e-/pixel/sec (-30° C; D02 housing); 0.08 eps for High Cooling D09 housing. Camera Head Standard: D02. Low profile: D06. Wide angle: D13. Aluminum, hard blue and black anodized. 6" x 6" x 2.1" (15 x 15 x 6.25 cm). Weight: 3.1 lb. (1.4 kg). High cooling: D09. 17.8 x 17.8 x 8.9 cm. 1.9 kg. Mounting 2" 24 tpi; 3.5" bolt circle. D06: 1.77" thru; 3.5" B.C. D09: 2.5" 20 tpi; 5.125" B.C. D13: 3" 20 tpi; 5.125" B.C. Optional Nikon or Canon lens mount. Back focal distance Standard: 1.025" (2.60 cm). Low profile: 0.55" (1.40 cm). High Cooling: 1.36" (3.45 cm). Wide angle: 1.02" (2.59 cm). [optical] Operating Environment Temperature: -22° to 27°C. Relative humidity: 10 to 90% noncondensing Cable length Standard: 15 ft. (4.5m) Power 40W maximum power with shutter open and cooling maximum. Power supplied by AC/DC "brick" supply with international AC input plug. Alternate 12V input for user’s source. Shutter Standard: Melles Griot 43mm. Low profile: no internal shutter. High cooling & Wide Angle: Melles Griot 63mm. Remote Triggering LVTTL input to camera allows exposure start within 25 microseconds of rising edge of trigger. CCD Sensitivity