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Instruments

Newtonian Reflector with Equatorial Fork Mount

Construction and Production: DI Hans-Heinrich Wenk
Main Mirror: DI Hans-Heinrich Wenk

Main Mirror
  • Diameter: 350 mm
  • Focal Length: 2030 mm
  • Aperture (f/D): 5,8
  • Coating: Hilux
  • Optical Resolution (Rayleigh-Criterion): R/G/B: 0,47“ / 0,40“ / 0,32“

Secondary Mirror
  • 82 mm / 10 mm (Hilux)
  • Areal Obstruction: 5,49 %

Fork Mount (OPFM 500)
  • Welded Steel Construction
  • Max. Mirror Diameter: 500 mm
  • Weight: 295 kg
  • Load Capacity: 160 kg

Drives
  • Friction Wheels, 500 mm
  • Overall Transmission: 1500:1



2" Sled Focuser

  • long travel path (150mm)
  • precise linear bearings
  • precise actuator
  • positioning error < 0,01mm
  • opto-electronical referencing
  • ΔT-compensated focus-positions database 
  • permanent computer controlled compensation of ΔT-caused variations in length of the optical system
  • focal instrument loading up to 8kg
  • electrically heatable secondary mirror, with temperature sensor
  • Fully computer controlled with additional handbox
 
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