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ANNA - Low resolution slit spectrograph
Low-resolution slit spectrograph ANNA is mounted at right Nasmyth focus of the 1.2m telescope. The first light was obtained in August 2011 and then the device was send back for revision. Current modification works since February 2013.
The instrument is used successfully to determine spectral types of stars up to 12m for mass spectral classification of stars in open clusters and for determination or confirmation of types of variable stars and exoplanet systems discovered with MASTER-II-Ural telescope.
Observing time on the spectrograph is open to proposers from other scientific organizations. To submit your proposal please contact Mr. Vadim Krushinsky via krussh [at] gmail [dot] com (e-mail).
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| General | Autoguide camera field | 2'×3' | |
|---|---|---|---|
| Main mirror | 1.2 m | Calibration lamp | HeNeAr |
| Design | Slit spectrograph | CCD | |
| Focal length with reducer (0.5) | Right Nasmyth FL=6 m | CCD | Apogee Alta U16M |
| Resolution | 600 | Sensor | KAF-16803 Kodak |
| Wavelength | 3 500—10 500 А | Active pixels | 2500×4096 |
| Pixel size | 9×9 μm | ||
| Spectrograph | Image area | 22.5×36.9 mm | |
| Slit width | 3" | Cooling | Thermoelectric coolerwith forced air |
| Slit height | 2' | Chip temperature | -30°C |
| Grating | 300 g/mm | Dark current | 0.2 e/px/sec |
| Collimators FL | 135 mm | Gain | 1.3 e/ADU |
| Camera FL | 75 mm | Readout noise | 10 e/px |
