Kyle Sturzenbecher (Photo-Sonics Inc.), Brad Ehrhorn (RC Optical Systems)
Keywords: Telescopes, Instrumentation
Abstract:
This paper is a discussion on the use of large reflective telescopes on mobile tracking systems with modern instrument control systems. Large optics can be defined as reflective telescopes with an aperture of at least 20 inches in diameter. New carbon composite construction techniques allow for larger, stronger, and lighter telescopes ranging from 240 pounds for a 20 inch, to 800 pounds for a 32 inch, making them ideal for mobile tracking systems. These telescopes have better light gathering capability and produce larger images with greater detail at a longer range than conventional refractive lenses. In a mobile configuration these systems provide the ability to move the observation platform to the optimal location anywhere in the world.
Mounting and systems integration We will discuss how large telescopes can be physically fit to the mobile tracking system and the integration with the tracking systems digital control system. We will highlight the remote control capabilities. We will discuss special calibration techniques available in a modern instrument control system such as star calibration, calibration of sensors.
Tracking Performance We will discuss the impact of using large telescopes on the performance of the mobile tracking system. We will highlight the capabilities for auto-tracking and sidereal rate tracking in a mobile mount.
Large optics performance We will discuss the advantages of two-mirror Ritchey-Chrétien reflective optics which offer in-focus imaging across the spectrum, from visible to Long Wave Infrared. These zero expansion optics wont lose figure or focus during temperature changes. And the carbon composite telescope tube is thermally inert. The primary mirror is a modern lightweight dish mirror for low thermal mass and is center supported/self balancing.
Applications We will discuss Visible – IR Imaging requirements, Optical Rangefinders, and capabilities for special filters to increase resolution in difficult conditions such as viewing events through a fireball. We will review the performance characteristics of reflective telescopes in TSPI and IR imaging applications.
Date of Conference: September 10-14, 2006
Track: Telescopes and Instrumentation