ATIK Cameras 4 Series Manual do utilizador - Página 7

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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.

Technical Information Summary

Atik 420

Sensor Type

Sony ICX274

Resolution

1620x1220

pixels

Pixel Size

4.4x4.4μm

ADC

16 bit

Readout Noise

4 e -

(typical)

Interface

USB 2.0

Power

12V DC 1A

Maximum Exposure Unlimited

Minimum Exposure 1/1000 s

Cooling

Thermoelectric

Delta T = -30ºC Delta T = -30ºC Delta T = -25ºC Delta T = -25ºC Delta T = -25ºC

Weight

Approx. 400 g

Backfocus distance 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

250

300

350

400

450

500

550

600

650

700

750

800

850

900

Atik 450

Sony ICX655

2448x2050

pixels

3.45x3.45μm

16 bit

5 e -

USB 2.0

12V DC 1A

Unlimited

1/1000s

Thermoelectric

Approx. 400g

13mm

Atik 420

Atik 450

3,63

2,85

3,03

2,37

2,59

2,03

2,27

1,78

2,02

1,58

1,82

1,42

1,65

1,29

1,51

1,19

1,40

1,09

1,30

1,02

1,21

0,95

1,13

0,89

1,07

0,84

1,01

0,79

Atik 428EX

Atik 460EX

Sony ICX674

Sony ICX694

1932x1452

2750x2200

pixels

4.54x4.54μm

16 bit

5 e -

USB 2.0

12V DC 1A

Unlimited

1/1000s

Thermoelectric

Approx. 400g

13mm

Atik 428/460EX

3,75

3,12

2,68

2,34

2,08

1,87

1,70

1,56

1,44

1,34

1,25

1,17

1,10

1,04

Atik 490EX

Sony ICX814

3380x2704

pixels

3.69x3.69μm

16 bit

5 e -

USB 2.0

12V DC 1A

Unlimited

1/1000s

Thermoelectric

Approx. 400g

13mm

Atik 490EX

3,04

2,54

2,17

1,90

1,69

1,52

1,38

1,27

1,17

1,09

1,01

0,95

0,90

0,85