Wide and Fast: Monitoring the Sky in Subsecond Domain with the FAVOR and TORTORA Cameras

Table 2

Technical parameters of the FAVOR and TORTORA cameras.

	FAVOR	TORTORA
Main objective
Diameter	150 mm lens	120 mm mirror
Focal length	180 mm	150 mm
Focal ratio	1/1.2	1/1.2
Image intensifier
Photocathode	S20	S20
Diameter	90 mm	90 mm
Gain	150	150
Scaling factor	7.7	7.7
Quantum efficiency	10%	10%
CCD
Model	VS-CTT285-2001	VS-CTT285-2001
Frame size	1388 × 1036	1388 × 1036
Pixel scale	57^′′/pix	81^′′/pix
Exposure	0.13 s	0.13 s
Pixel size	6.5 𝜇m	6.5 𝜇m
Read-out noise	6 e^−/pix	6 e^−/pix
Star FWHM	3.1^′	2.7^′
Mount	Equatorial	Alt-azimuthal
Focus	manual	automatic