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Parameter |
130-cm Telescope
|
104-cm Telescope |
| Configuration |
Ritchey-Chretien with Cassegrain foci |
Ritchey-Chretien with Cassegrain foci |
| Effective focal ratio |
f/4 |
f/13 |
| Pupil Aperture |
130 cm |
104 cm |
| Effective focal Length |
520 cm |
1352 cm |
| Plate Scale |
40 arcsec/mm |
15.2 arcsec/mm |
| Un-vignetted field of view |
100 mm in diameter/ 65 armin |
|
| Mounting |
Equatorial | Equatorial |
| Instrument clearance from the mounting flange |
85 cm |
|
| Maximum weight of the instrument |
200 kg-m |
|
| Thickness of primary mirror |
14.94-cm |
|
| Diameter of secondary mirror |
58-cm |
|
| Tracking accuracy |
0.5 arcsec rms over
10-min without guider |
|
| Pointimg accuracy |
10 arcsec rms | |
| Energy concentration |
80% within 0.6-arcsec up to 7 arcmin radius |
|
| Operational Wavelength |
300 -1000 nm |
300 -1000 nm |
| Longitude of the site |
79 degree 27 minutes (E) |
79 degree 45 minutes (E) |
| Latitude of the site |
29 degree 24 minutes (N) |
29 degree 22 minutes (N) |