Bibcode
Izazaga, Rafael; Carrasco, Esperanza; Hidalgo, Andrea; Aguirre, Daniel; Terlevich, Elena; Terlevich, Roberto; Dalton, Gavin; Trager, Scott; Aguerri, J. A. L.; Bonifacio, Piercarlo; Vallenari, Antonella; Abrams, Don Carlos; Middleton, Kevin
Bibliographical reference
Proceedings of the SPIE, Volume 10706, id. 107063J 20 pp. (2018).
Advertised on:
7
2018
Citations
2
Refereed citations
0
Description
WEAVE is the new wide field multi-object and integral field survey
facility for the prime focus of the 4.2 m William Herschel Telescope.
WEAVE fiber-fed spectrograph offers two resolutions, R 5000 and
20,000. The dual-beam spectrograph has two cameras: the blue one
optimized for the wavelength interval of 366 - 606 nm and the red one
for 579 - 959 nm. Each camera is formed by eight lenses, one aspherical
and seven spherical. The lenses of the red camera are identical to the
lenses of the blue camera only differentiated by the anti-reflection
coating wavelength range. The diameter of the largest surface is 320 mm
while of the smallest is 195 mm. INAOE, as a member of the collaboration
is responsible of the manufacturing of the 14 spherical lenses and the
collimator mirror. Here, we describe the main characteristics of WEAVE
high precision cameras lenses, the manufacturing challenges giving the
combination of OHARA glasses properties, dimensions and specifications.
We discuss the solutions developed to achieve the very demanding
specifications.