Astronomic Azimuth Class

November 13-16, 2012

Instructor: Dave Lehman

 

 

2012 Class picture

 

 

This course is intended for experienced surveyors.

For information contact Erika.Little@noaa.gov.

 

Tuesday, November 13

Afternoon Session:

• Administrative Comments (Corbin Training Staff)
• Course Introduction
• Definition of azimuth and methods for azimuth determination
• Equipment & Field Procedures
• Data capture and time synchronization

Evening Session:

• Preliminary computations & star lists
• The Night Sky:  Constellation and Star Identification
• Application of Field Procedures and Observations 

Wednesday, November 14

Afternoon Session:

• Star catalogs, celestial coordinates, measurement of time
• Computation of Astronomic Azimuth

Evening Session:

• Field Observations
• Focus on azimuth determination at mid latitudes using "Polaris" 

Thursday, November 15

Afternoon Session:

• Comparison of Astronomic and Geodetic Reference frames
• Earth Orientation with relation to Geodetic Datums
• Precise geodetic considerations; Laplace Corrections, "Skew Normal"
• Discussion of azimuth determination at different latitudes
  • Southern Hemisphere
  • High/Low Latitudes
  • Latitudes near the Equator
• Comparison of methods/procedures
  • Hour Angle
  • East-West Stars
  • Solar Azimuth
    • Presentation by Dr. Ron Gallagher

Evening Session:

• Field Observations
• Focus on alternate observation routines 

Friday, November 16

Afternoon Session:

• Analysis of field work & computations
• Precision and Error Analysis
• Introduction to advanced topics:
  • Simultaneous Determination of Astronomic Latitude, Longitude, and Azimuth
  • Determination of deflection of vertical by direct observation
  • Reliability of current data and systems

Evening Session:

• Field Observations 
• Course Wrap-Up & Evaluation
• Administrative Comments (Corbin Training Staff)
• Presentation of Training Certificates 

Class Structure: 

• Afternoon Sessions:  10:00 am - 4:00 pm
• Dinner Break:  4:00 pm - 5:00 pm
• Evening Sessions:  5:00 pm (or sundown) - Completion of Work

Equipment for field observations and office computations will be available on site provided by the Corbin Training Center.  Participants are encouraged to bring their own surveying equipment.  Participants are also encouraged to bring a computer, laptop, USB to serial adapters / drivers and serial interface cable(s).  Available software interfaces should be compatible with the following: Leitz/Sokkia, Pentax, Nikon, Topcon, Wild/Leica (some models), Zeiss/Trimble.   Some equipment manufacturers may be on hand to demonstrate available equipment.  (Note:  NGS does not endorse or recommend any specific manufacturer or company.)