Russian-Turkish 1.5-m Telescope
(C) Copyright
HEAD
IKI
1:3 optical scheme
(with Meinel camera)
Reducer was intended to use photographic plates with focal plane being at
only 3 cm distance from the last lens. That's why this system cannot be used
for observations with standard size CCD-based detectors.
| Focal length, mm | 4519 |
| Linear field of view, mm |
|
| Angular field of view |
|
| Central screening area, % |
|
| Concentration of light energy at 632.8 nm wavelength
on the optical axis within the circles of diameter: |
|
| 0.022 mm, %, at least |
|
| 0.043 mm, %, at least |
|
| The same at the edge of field of view, at 39.5 mm from the center,
within the circles of diameter: |
|
| 0.022 mm, %, at least |
|
| 0.043 mm, %, at least |
|