TAO
Tools for Automated Observing
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Introduction
  System requirements
 
Getting Started
  Installation
  Modeling slew times
  Measuring camera
  download times
  Specifying filter
  names and numbers
  Modeling the local
  horizon
  Creating user profiles
  Initializing target
  databases
  Customizing the
  scheduler
 
Daily Operation
  Starting observatory
  control software
  Updating target
  databases
  Generating a list of
  potential targets
  Preparing a list of
  observation requests
  Running the
  scheduler
  Starting scheduled
  observations
 
Image Acquisition with
the MU Script
  Customizing the
  script
  File locations and
  telescope name
  Station data
  Basic parameters
  which determine
  script behavior
  Dome parameters
  Filter parameters
  Safe telescope
  position/parking
  option
  Image compression
  parameters
  CCD camera
  parameters
  Telescope slewing
  parameters
  Telescope slew
  limits
  Pointing corrections
  Timing tolerance/
  waiting times
  Bias frame
  parameters
  Dark frame
  parameters
  Flat field
  parameters
  Image shifts for
  binned calibration
  files
  Weather station
  parameters
  Focus parameters
    Page 1
    Page 2
  Aiming exposure
  parameters
  Starting MU
  Sequence of events
  during an observing
  run using MU
 
Timing Refinement
  Collecting timing
  data
  Analyzing timing
  data
  Adjusting the
  empirical timing
  correction
 
Other Tools
  Slew time
  measurement script
  Minor Planet Checker
  query script
  Regression program
 
Etc.
  Software updates
  License agreement
  Contact the author
Image acquisition with the MU script



Customizing the MU script (continued)

Telescope slew limits

' TELESCOPE SLEW LIMITS
minAlt = 15.                          ' Targets below altitude minAlt (deg) will be skipped.
minHA = 0.                            ' Targets at |HA| < minHA (time minutes) will be skipped.
                                      ' This is zero for fork-mounted telescopes, and should be
                                      ' positive for German equatorial mounts like the Paramount
maxHA = 510.                          ' Targets at |HA| > maxHA (time minutes) will be skipped.
maxDec = +90.                         ' Targets north of declination maxDec (deg) will be skipped.
minDec = -28.                         ' Targets south of declination minDec (deg) will be skipped.

  • minAlt. This parameter specifies the minimum altitude (in degrees) at which a target can be observed. If an object is at an altitude less than minAlt when the telescope is about to slew toward it, the slew is cancelled, and its observation is skipped. The minimum altitude limits specified in user profiles and in observation requests should not be less than minAlt.

  • minHA. This parameter specifies the minimum absolute value of the hour angle (expressed in minutes of time) at which a target can be observed. If an object is at an hour angle H such that |H| is less than minHA minutes when the telescope is about to slew toward it, the slew is cancelled, and its observation is skipped. The minimum |hour angle| limit specified in the scheduler configuration file should not be less than minHA.

  • maxHA. This parameter specifies the maximum absolute value of the hour angle (expressed in minutes of time) at which a target can be observed. If an object is at an hour angle H such that |H| is greater than maxHA minutes when the telescope is about to slew toward it, the slew is cancelled, and its observation is skipped. The maximum |hour angle| limit specified in user profiles, in the scheduler configuration file, and in observation requests should not be greater than maxHA.

  • maxDec. This parameter specifies the northernmost declination (in degrees) at which a target can be observed. If an object is at a declination north of maxDec when the telescope is about to slew toward it, the slew is cancelled, and its observation is skipped.

  • minDec. This parameter specifies the southernmost declination (in degrees) at which a target can be observed. If an object is at a declination south of minDec when the telescope is about to slew toward it, the slew is cancelled, and its observation is skipped.

Pointing corrections

' POINTING CORRECTIONS
RACorrEast = +0.00000                 ' Correction in RA (hours) to be used east of the meridian  
DecCorrEast = -0.0000                 ' Correction in Dec (deg) to be used east of the meridian
RACorrWest = +0.00000                 ' Correction in RA (hours) to be used west of the meridian
DecCorrWest = +0.0000                 ' Correction in Dec (deg) to be used west of the meridian

This section specifies constant offsets in right ascension and declination which may be applied to the target coordinates in an attempt to reduce telescope pointing errors. These are also useful when one changes CCD cameras and the centers of the new and old detectors have different offsets with respect to the optical axis. Different offsets may be defined for use on different sides of the meridian (this may be useful for German equatorial mounts).

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Next: Timing tolerance/waiting times, bias and dark frame parameters



© 1999-2004 Paulo Holvorcem