telescopes jst250 jast80

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 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.

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JAST80 Telescope Image

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.

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