May 2001 Observing Plan

version 1.0 2000-May-25; (rgm@ioa)

This is heavily based on the June, 2000 plan

How much time do we have available

Each night there is 6.9hrs between astronomical twilight. However we may be able to get 7.9hrs is we observe between 12degree twilights. We should aim for this. This means do a snafu on a V=5 star soon after sunset. Lets assume 7hrs per night and 50% of time is used for science observations. This gives:

CIRSI Grid and Tiling Pattern

The nominal size of filled CIRSI tile is 29.6'x29.6'. The chosen step size for the tiling is 28'x28'

see for the tiling pattern.

Other useful material:

Version 1 observing plan for the May PATT run

Standard stars required are listed in the INT CIRSI Observing Guide Defocus by 0.2units for standards REMEMBER TO SET IT BACK AFTERWARDS. Best do a standard just before you start or at the end survey regions ie before a long slew.

Focus after every long slew eg around 3 times per night in total

    The ELAIS N1 and N2 regions are covered by the WFS. CIRSI covering 144 pointings have been determined. One of these tiles is centred on a deep XMM pointing. To maximise the CIRSO overlap with the WFC tile lists given below should be used. The grids are plotted on the previous WWW page.

    WARNING Note although the Tile grid is the same as the pattern used by Eduardo Eglez, the Tile numbering system is different

  1. ELAIS-N1 complete a grid of 5x5 CIRSI tiles in J [N1 in H is complete]
  2. ELAIS-N2 complete a grid of 5x6 CIRSI tiles in H
  3. Avoid the 9 tiles that have been completed .i.e
  4. SSA22 WFS/CFHT Survey region
  5. WFS dec=0 strip 2200 to 2300
  6. Standards

What did we say we would do in our proposal

How do we get some J coverage

To get some J we have a number of options; One option would be to cover 1.5degx1.5deg regions in the ELAIS N1 and N2 regions in J for 360secs per pointing. This would give us around 4.5deg^2 of J data. It would require: Going shorter than 360seconds with the current CIRSI software is quite inefficient.