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Home > Public Information > Low Dispersion Survey Spectrograph |
LDSS-2: Low Dispersion Survey Spectrograph |
First light (at ING): March 1992. De-commissioned: June 1999. Designed and built by: Durham University and RGO.
Description:
The Low Dispersion Survey Spectrograph (LDSS-2), mounted at the Cassegrain focus of the WHT, is a system designed to obtain spectra of objects lying in the apparent magnitude range 20 to 23. In the case of these faint objects one requires a spectrograph of high efficiency avoiding light losses that occur in fibre feeds. The LDSS system is a focal reducer providing a collimated space where grisms of different dispersion may be placed. A focal plane mask is used to isolate the objects to be studied together with regions of night sky, and multiple spectra may be recorded on a CCD.
Time allocations:
Instrument information: http://www.ing.iac.es/astronomy/instruments/legacy/ldss2/index.html
More:
Research impact: Publications (5 from ING paper count)
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