Wide field optical and IR spectroscopy at the ING: present and future prospects

Details Wide field optical and IR spectroscopy at the ING: present and future prospects Wide field optical and IR spectroscopy at the ING: present and future prospects

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001newar..45...53p&link_type=abstract

New Astronomy Reviews, Volume 45, Issue 1-2, p. 53-57.

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The present status and performance of the fibre positioner autofib2 and spectrograph wyffos are reviewed. After extensive re-engineering of the autofib2 robot and fibre module, the system is now reliable, setting up a science field in under 30 min with better than 10 μm internal accuracy (the original specifications). Since the rebuild autofib2 has been scheduled on some 50 nights and undergone more than 50000 fibre movements with only one failure (and a number of back illumination failures of a minor nature). wyffos is now fully commissioned in both reflection and `echelle' mode. By summer 2001 both the small fibre module (1.6 arcsec diameter) and the wyffos long camera will be commissioned. These upgrades will make this system amongst the most sensitive on any 4 m telescope. A series of relatively minor software and fibre module upgrades are also proposed (some of which will be implemented soon) which will allow 150 fibre movements in 10-15 min and crossing fibres. Further in the future we propose the development of a fibre module and wyffos optics optimized for the near IR and also a small fibre module containing 600 fibres (2 fibres per button) that at the very least will be useful for sky subtraction and beam-switching (depending on technological developments).

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