Feature /项目 | Specification / 说明 |
|---|
| Type of element that can be measured | Astronomical telescopes (at Cassegrain， Prime and Newtonian focus). Telescopes in the laboratory. Lenses in external illumination |
| Focal ratios covered | f/1.8 to f/300 standard. Faster focal ratios can be tested with special setup |
| Diameter of optical element that can be tested | Practically any diameter |
| Diameter of lenslets | 0.3 mm |
| Focal length of lenslets | 41 mm |
| Standard sampling on the pupil | About 26 x 26 spots |
| Maximum sampling | Up to 70 x 70 spots can be used (camera dependent) |
| Analysis Software | Sensoft |
| Precision of Zernike polynomials coefficients (laboratory) | λ/300 |
| Precision of Zernike polynomials coefficients (telescope) | 0.01 " |
| Precision with which the wavefront is computed | λ/150 rms |
| Wavelength range | With standard camera from 0.375 μ up to 1.1 μ. With IR camera up to 2 μ |
| Reference source | LED with cooled camera. Remotely controlled |
| Distance from flange to instrument focus | 54.8 mm |
| Height of optical axis from base | 61.5 mm |
| Camera for SH | 16-bit cooled CCD |
| Camera for finder | 10-bit uncooled CMOS， 1280 x 1024 pixels， 7.5 μ pixel size or 14 or 16-bit cooled CCD |
| Dimensions (depends from focal ratios tested) | 9 (Height) x 22 (Length) x 9 (Width) cm |
| Power requirement (stepper motor) | 12V， 500 mA |
