This page was last revised on 1997-10-30.
The Wide-Field Camera for the Isaac Newton Telescope (WFC for INT)
comprises a science array of four Loral CCD's, plus a fifth acting as
autoguider. A filter wheel with six positions is provided.
Notes from the commissioning team
Starting the system
Focusing the WFC
Automatic prediction of guider-star positions
Recovering from major errors
Each chip is 2048x2048 pixels, each pixel 15 microns, giving a scale at
INT prime focus of 0.37". The chips are geometrically similar to the
single Ford chip previously used at INT prime
(an example 160k image of M33).
- The chips are not butted, hence to cover a contiguous are of sky it
is necessary to make multiple exposures.
- The optical axis, and hence the nominal pointing position of
the telescope, is in the central gap.
- Half the autoguider chip is used as a frame-transfer buffer,
enabling rapid autoguider readout. The area available for guide stars
is therefore ~12.5'x7'.