Telescopes
The OAJ telescopes are particularly defined for carrying out large sky surveys.The table below illustrates the main technical specifications of the two telescopes at the OAJ.
| JST250 | JAST80 | |
|---|---|---|
| Optical configuration | Ritchey Chrétien like, equipped with a field corrector and derotator | Ritchey Chrétien |
| M1 diameter | 2.55 m | 83 cm |
| FOV diameter | 3 deg (476 mm physical size) | 2 deg (130 mm physical size) |
| Effective collecting area | 3.89 m2 | 0.44 m2 |
| Etendue | 26.5 m2deg2 | 1.5 m2deg2 |
| Focal length | 9098 mm | 3712 mm |
| Plate scale | 22.67 arcsec/mm | 55.56 arcsec/mm |
| Mount | Altazimuthal | German equatorial |
| Focus | Cassegrain | Cassegrain |
JST250 Telescope Image
JST250 (Javalambre Survey Telescope) is a 2.55 m, F#3.5 alt-azimuthal telescope with a Ritchey-Chrétien-like configuration with a large field of view of 3 deg diameter, particularly defined for carrying out large sky photometric surveys like J-PAS.
JAST80 Telescope Image
The Javalambre Auxiliary Survey Telescope (JAST80) is an 80cm Ritchey Chrétien telescope with a large field of view of 2 deg diameter, particularly defined for carrying out large sky photometric surveys like J-PLUS.