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fivepoint procedure

Five-Point steps the telescope through the sequence off on +maj -maj +min -min on off, where maj is the R.A. or Longitude Offset, and min is the Dec., latitude, or elevation Offset. This procedures primary purpose is to determine pointing offsets. If you are observing in Azimuth/Elevation coordinates, the blank sky off position will be 5 times the Az. Offset distance from the central position. Otherwise, an additional Az. Offset parameter is specified. Point Integration is the integration time on each position. Unless Separate Scans = no, each integration will be recorded as a separate scan. The available keywords for the fivepoint procedure are shown in Table 7.


Table 7: Keywords available for the fivepoint procedure. The keywords that are active depends on the selection of the sc.coordinatemode and sc.offsetcoordinatemode keyword values.
RA & DEC HA & DEC Galactic Az. & El. / Encoder User Defined Solar System
proc.ra proc.ha proc.long proc.az proc.udlong proc.sslong
proc.dec proc.dec proc.lat proc.elev proc.udlat proc.sslat
proc.raoffset proc.haoffset proc.longoffset proc.azoffset proc.udlongoffset proc.sslongoffset
proc.decoffset proc.decoffset proc.latoffset proc.elevoffset proc.udlatoffset proc.sslatoffset
proc.secantdec proc.secantdec proc.secantlat proc.secantelev proc.secantudlat proc.secantsslat
proc.repeatnumber
proc.startnumber
proc.pointduration
proc.realtimedisplay
proc.data



next up previous
Next: circle procedure Up: Procedures Previous: offonoff procedure
Bob Garwood 2011-07-25