The observatory's construction exemplifies NARIT's spirit of international collaboration, with parts and instruments sourced from around the globe.
The observatory houses the Thai National Telescope (TNT), a telescope with a 2.4-meter primary mirror, and a Ritchey-Chretien optical layout. The telescope is in an 'Altitude-Azimuth' mounting, with two Nasmyth foci. The telescope was manufactured by Electro-Optical Systems in Tucson, Arizona, USA. The 2.4 meter primary mirror was fabricated and underwent fine polishing at the Lytkarino Optical Glass Factory (LZOS) facility near Moscow.
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| Description | Specification |
|---|---|
| Primary Mirror Diameter | 2.4 M (+/- 10 mm) |
| Total Focal Langht | 24 M |
| System Focal Ratio | f/10 |
| Plate Scale | 8.6 arcsec/mm |
| Field of View | 16 arc min |
| Total wavefront error | < 140 nm rms at 0 Zenith angle |
TELESCOPE STRUCTURE
| Description | Specification |
|---|---|
| Mounting | Altitude-Azimuth (Alt-Az) |
| Basic Optics | Ritchey-Chr?tien folded dual Nasmyth system |
| Maximum Slewing Speed | 4.0 deg/sec |
| Pointing accuracy | Better than 3 arcsec RMS to 70? zenith angle |
| Tracking accuracy (without guiding) | Less than 0.5 arcsec RMS over 10 min |
| Keyhole (Zenith Blind Spot) | 0.5 Degrees radius |
2.4 m Telescope Structure
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| Secondary Mirror | Mirror Support |
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| Corrector Lens | Azimuth Motor |
Instruments Cube