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LIRIS Dither Patterns

The basic telescope move patterns are 2, 3, 4, 5, 8 and 9 point patterns. Scripts always start and end with the telescope at the same point in space, at the centre of the pattern.

 
  • For ndither = 3, 5 and 9 the data acquisition positions are as follows:
3
POINTS
3
1
2
5
POINTS
3 4
1
2 5
9
POINTS
4 5 6
3 1 7
2 9 8
  • For ndither = 2, 4, and 8 the acquisition at the central position is dropped. Thus:
2
POINTS
2
0
1
4
POINTS
2 3
0
1 4
8
POINTS
3 4 5
2 0 6
1 8 7


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Contact:  (LIRIS Instrument Specialist)
Last modified: 17 June 2012