ATIK Cameras 460EX User Manual - Manual (Page 7)

7
it with a fresh one. Replace the port cover and tighten (no need to over-
tighten). Wait 24 hours before connecting the camera again.
- To recharge the desiccant, place the tablet in an electric oven at 200ºC
for a couple of hours. Take it from the oven, wait a few minutes for it to
cool down slightly, then put it back in the camera and wait 24 hours.
You will notice that there is a filter inside the desiccant chamber. The purpose
of this is to avoid contamination of the chamber when the desiccant is being
replaced. The filter is very fragile and should not be touched.
4 Technical Information Summary
Atik 420 Atik 450 Atik 428EX Atik 460EX Atik 490EX
Sensor Type Sony ICX274 Sony ICX655 Sony ICX674 Sony ICX694 Sony ICX814
Resolution 1620x1220
pixels 2448x2050
pixels 1932x1452
pixels 2750x2200
pixels 3380x2704
pixels
Pixel Size 4.4x4.4
μm
3.45x3.45
μm
4.54x4.54
μm
4.54x4.54
μm
3.69x3.69
μm
ADC 16 bit 16 bit 16 bit 16 bit 16 bit
Readout Noise
(typical)
4 e- 5 e- 5 e- 5 e- 5 e-
Interface USB 2.0 USB 2.0 USB 2.0 USB 2.0 USB 2.0
Power 12V DC 1A 12V DC 1A 12V DC 1A 12V DC 1A 12V DC 1A
Maximum Exposure Unlimited Unlimited Unlimited Unlimited Unlimited
Minimum Exposure 1/1000 s 1/1000s 1/1000s 1/1000s 1/1000s
Cooling Thermoelectric Thermoelectric Thermoelectric Thermoelectric Thermoelectric
Delta T = -30ºC Delta T = -30ºC Delta T = -25ºC Delta T = -25ºC Delta T = -25ºC
Weight Approx. 400 g Approx. 400g Approx. 400g Approx. 400g Approx. 400g
Backfocus distance 13mm 13mm 13mm 13mm 13mm
The following table gives the angular resolution per pixel with certain focal
distances. The formula to calculate any other focal length is:
(Pixel Size (
μm) / Focal Distance (mm)) * 206.3 = angular resolution (arcseconds/pixel)
Focal Length Atik 420 Atik 450 Atik 428/460EX Atik 490EX
250 3,63 2,85 3,75 3,04
300 3,03 2,37 3,12 2,54
350 2,59 2,03 2,68 2,17
400 2,27 1,78 2,34 1,90
450 2,02 1,58 2,08 1,69
500 1,82 1,42 1,87 1,52
550 1,65 1,29 1,70 1,38
600 1,51 1,19 1,56 1,27
650 1,40 1,09 1,44 1,17
700 1,30 1,02 1,34 1,09
750 1,21 0,95 1,25 1,01
800 1,13 0,89 1,17 0,95
850 1,07 0,84 1,10 0,90
900 1,01 0,79 1,04 0,85