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code:telescope_poiniting [2009/07/08 04:09]
pkubanek created
code:telescope_poiniting [2009/10/07 00:00] (current)
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   *  **ORIRA**, **ORIDEC** contains original, J2000 coordinates. Those area usually entered by observing program (rts2-executor).   *  **ORIRA**, **ORIDEC** contains original, J2000 coordinates. Those area usually entered by observing program (rts2-executor).
-  *  **OFFSRA**, **FFSDEC** contains offsets applied to ORI coordinates.+  *  **OFFSRA**, **OFFSDEC** contains offsets applied to ORI coordinates.
   *  **OBJRA**, **OBJDEC** contains offseted coordinates. //OBJRA = ORIRA + OFFSRA, OBJDEC = ORIDEC + OFFSDEC//.   *  **OBJRA**, **OBJDEC** contains offseted coordinates. //OBJRA = ORIRA + OFFSRA, OBJDEC = ORIDEC + OFFSDEC//.
   *  **TARRA**, **TARDEC** contains precessed etc. coordinates. Those coordinates do not contain modelling, which is stored in MODRA and MODDEC.   *  **TARRA**, **TARDEC** contains precessed etc. coordinates. Those coordinates do not contain modelling, which is stored in MODRA and MODDEC.
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   *  **MORA**, **MODEC** contains offsets coming from pointing model. They are shown only if this information is available from the mount (OpenTpl) or when they are calculated by RTS2 (Paramount).   *  **MORA**, **MODEC** contains offsets coming from pointing model. They are shown only if this information is available from the mount (OpenTpl) or when they are calculated by RTS2 (Paramount).
  
-Following auxiliary values are used to track telescope offsets. Due to their transient nature, they are visible only in //​rts2-mon//​.+Following auxiliary values are used to track telescope offsets. Due to their transient nature, they are visible only in //​rts2-mon//​, and aren't written to FITS headers. 
   * **woffs** contains offsets which weren'​t yet applied. They can be set either directly or when you change OFFS value. When move command is executed, //OFFSRA += woffsRA, OFFSDEC += woffsDEC// and //woffsRA// and //​woffsDEC//​ are set to 0.   * **woffs** contains offsets which weren'​t yet applied. They can be set either directly or when you change OFFS value. When move command is executed, //OFFSRA += woffsRA, OFFSDEC += woffsDEC// and //woffsRA// and //​woffsDEC//​ are set to 0.
   * **wcorr** contains corrections which weren'​t yet applied. They can be set either directly or by correct command. When move command is executed, //CORRRA += wcorrRA, CORRDEC += wcorrDEC// and //wcorrRA = 0, wcorrDEC = 0//.   * **wcorr** contains corrections which weren'​t yet applied. They can be set either directly or by correct command. When move command is executed, //CORRRA += wcorrRA, CORRDEC += wcorrDEC// and //wcorrRA = 0, wcorrDEC = 0//.
 +
 +They are two algorithms worth mentioning. First is how OFFSets are handled, so telescope offseting do not cause observatory to move telescope during exposures. Second, similar algorithm is used for applying corrections (wcorr and CORR_ variables).
  
 If you are interested to see how the code works, please see startResync() documentation for functions available to retrieve various coordinates. startResync is the routine which is called each time coordinates written as target should be matched to physical telescope coordinates. Using various methods in the class, driver can get various coordinates which will be put to telescope. You can also see [[code:​telescope_driver]] for description how to add new telescope driver. If you are interested to see how the code works, please see startResync() documentation for functions available to retrieve various coordinates. startResync is the routine which is called each time coordinates written as target should be matched to physical telescope coordinates. Using various methods in the class, driver can get various coordinates which will be put to telescope. You can also see [[code:​telescope_driver]] for description how to add new telescope driver.
code/telescope_poiniting.txt · Last modified: 2009/10/07 00:00 (external edit)