Three-channel general-purpose astrophotometer

Number of channels (CH1, CH2 and CH3)	3
Distance between the channels CH1 and CH2	26 mm to 50 mm (7 arcmin to 13 arcmin for F=13 m)
CH1 and CH3	20 mm (5,3 arcmin for F=13 m)
Possible deviation of CH3	+/- 2 mm (31 arcs for F=13 m)
Number of filter wheels	2 (for CH2 and for CH1+CH2)
Number of filters in each filter wheel	10 in CH1 (5 pairs in CH1+CH3)
Diameter of filters	13 mm
Number of aperture wheels	2 (for CH2 and for CH1+CH3)
Number of apertures in each wheel	10 in CH1 (5 pairs for CH1+CH3)
Diameter	0,3 to 8,0 mm (5 arcs to 2 arcmin for F=13m)
Diameter of field eyepiece	40 mm (10,2 arcmin for F=13 m)
Number of aperture microscopes	2 (for CH2 and for CH1+CH3)
Magnification of aperture microscopes	25^X
Diameter of the field of microscopes	8 mm (2 arcmin)
Number of Fabri lenses	3
Diameter of Fabri lenses	14 mm
Focus length of Fabri lenses	30 mm
Diameter of outcoming pupil	2,5 mm
Spectral range	300 to 650 nm (PMT - R647P) 185 to 850 nm (PMT - R1463P)
Temeperature of the PMTs	two stabilized temperatures -5°C and -15°C which can be set depending on the enviromental temperature
System of the PMT cooling	one stage thermoelectric cooler with actively ventilated heat absorber
Dimensions of the photometer	height 410 +/- 5 mm max diameter (including microscopes) 210 +/- 5 mm max diameter of the main frame 140 +/- 5 mm

Kalbos