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Basic Information about teleascopes

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)

Futher technical details on the telescopes