Deflection of the Vertical Camera

Image of geodetic station
Geodetic Station NASA-GSFC RM3 located at McDonald Observatory, Texas. Station is located less than 100 m southwest of the Hobby-Eberly Telescope (HET) atop Mount Fowlkes in the Davis Mountains of West Texas. The HET is approximately 16 miles northwest of Fort Davis, TX along TX State Highway 118. Image credit: NGA
PI: Clark Hughes, UT Applied Research Laboratory
Purpose: Development and testing of high-precision Deflection of the Vertical cameras.
  • Could support improved realization of the horizontal at the MF and VC sites.
Funding: NGA (ARL Texas Astro Project)
Status @ July 2019
  • DoV camera prototype developed and tested in previous programs at UT:ARL facilities.
  • A35M Astrolabe survey completed at Mt. Fowlkes in April 2017.
  • Requested re-survey of Mt. Fowlkes and Visitor Center sites with the DoV camera.
Contact Information:
J. Clark Hughes (

Last Updated: April 9, 2021