RTT150, main page
RTT150
Russian-Turkish 1.5-m Telescope
 
High energy Astrophysics department of IKI, Moscow
International astrophysical observatory Spectrum-X-Gamma
International astrophysical space observatory INTEGRAL

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HEAD IKI

1:7.7 optical scheme with corrector

The primary mirror 1 reflects light to the secondary mirror 2 which collects it on the focal surface of system. Lens corrector 3, 4 is placed between focal surface and the secondary mirror which allows to obtain large flat linear field of 300 mm diameter.

Focal length, mm 11639
Linear field of view, mm
300
Angular field of view
1o28'
Central screening area, %
25.8
Concentration of light energy at 632.8 nm wavelength
on the optical axis within the circles of diameter:
0.017 mm, %, at least
65
0.029 mm, %, at least
83
The same at the edge of field of view, at 150 mm from the center,
within the circles of diameter:
0.017 mm, %, at least
57
0.029 mm, %, at least
81