Previous: Beam from calibration unit to spectrograph
Up: A&G unit design
Previous Page: Beam from calibration unit to spectrograph
Next Page: Instrument performance

Details of the 1994 upgrades to the UES A&G unit

During the summer of 1994 it is expected that an improved A&G unit will be installed and commissioned at UES. The features that will be offered by the new unit are detailed below:

REQUIREMENTS FOR UES FIBRES ENHANCEMENT

  1. Only 2 fibres bundles will be required, one for slit viewing and one for off-axis guiding. It will be possible to view the fields from both fibres on the CCD simultaneously.
  2. The enhanced optical/fibre system will work with the existing autoguider head.
  3. Each fibre will have a field of view of arcsecs
  4. Image scale on CCD will be in range 0.15 to 0.2 arcsec/pixel
  5. Overall improvement in sensitivity of off-axis channel will be at least a factor of 20, with a factor of about 10 or possibly more from the fibre/optical components, and a factor of 2 from the autoguider CCD. This should take the limiting magnitude to about 17th in V.
  6. Overall improvement in sensitivity of slit-view channel to a similar limiting magnitude (ie. to about 17th magnitude including the CCD improvement).
  7. Wavelength coverage will be 400-700 nm.
  8. It will be possible to adjust the focus for each fibre

Additional related enhancements that will be provided are:


Mon Mar 14 16:50:31 GMT 1994