MSRT characteristics
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Characteristics |
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Notes |
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Location |
Latitude: 60° 24'57" Longitude: 22° 26'42"E Altitude: 53 m above sea level |
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Type |
Cassegrain |
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Mount |
Equatorial |
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F/D |
0.425 |
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Main dish diameter, m |
2//5 |
current//future |
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Main dish material |
Carbon fiber |
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Secondary dish diameter, cm |
20 |
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RMS surface error(main dish), microns |
80//120 |
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RMS surface error (secondary dish), microns |
50//60 |
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Drives |
Step-motors N1 and N2 with gearboxes AC motor N3 |
N1-Pointing/scanning delta N2-tracking/scanning alpha N3-pointing alpha |
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Control System |
PCB with serial PC port, encoders with ISA PC interface |
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Pointing speed alpha/delta, arcgrad per sec |
1/0.1 |
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Pointing accuracy alpha/ beta, arcmin |
1/1 |
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Tracking time from meridian, hours |
+-6 |
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Tracking error (max), arcmin |
1 |
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Frequency range, MM |
10 |
3* |
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HPBW, arcmin* |
20//8.5 |
6//2.5 |
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Number of beams* |
4 |
25 |
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Receiver sensitivity per beam per sec, mK* |
30 |
100 |
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Polarisation |
Circular (L/R) |
Circular (L/R) |
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Stocs parameters |
I, V |
I, V |
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Time resolution, mS |
10 |
10 |
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Aperture efficiency |
0.7//0.7 |
0.6//0.5 |
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S eff, sq.m* |
2.2//13.7 |
1.9//9.8 |
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Flux sensitivity per beam per 100 msec, S.F.U.* |
0.6//0.1 |
2//0.5 |
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* expected