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Table 1 List of optical devices

From: A new five-wavelength photometer operated in Tromsø (69.6°N, 19.2°E)

No. Device type Comments; unit is in mm
1 Lens D50 f200
2 Prism mirror Enhanced aluminum coated
3 Lens D50 f150
4 Mirror 56.57 × 40 (with pinhole)
5 Lens D25 f40
6,7,8,9 Dichroic mirror 25.2 × 35
10 Mirror 25 × 35; protected gold
11 Lens D50 f250
12 Lens D50 f100
13 Lens D25 f400
14,15,16,17,18 Bandpass filter See Table 2
19 Lens D25 f35
20 Lens D25 f30