APO 250VT f/8.8 Fluorite Apochromat

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APO 250VT f/8.8 Fluorite Apochromat
  • Apochromatic tripelt objective
  • Clear aperture 10" (250mm), focal length 2200 mm
  • Excellent color correction thanks to glass combined with Fluorite as a middle element
  • Durable oil spaced lens - Why an oil-spaced triplet-lens?
  • 3.5" Feather Touch Focussierer of Starlight Instruments
Important note: This product is not available online. Price on application. If you are interested, please send us a formal inquiry incl. contact data by email. We shall gladly provide a detailed offer.

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Description

Details

TEC APO 250VT

TEC APO 250VT

TEC APO250VT - our largest, most powerful refractor available. Even though it could be used at star parties, we would count it as an observatory class instrument that requires a large, permanent mounting solution.

TEC APO 250VT

Specifications

Clear aperture 10" / 250 mm
Focal length 2200 mm
Focal ratio 8.8
Resolution (theoretical) 0.5"
Field curvature flat
Diffraction-limited field of view 0°.5 (16.5 mm)
Tube diameter 254 mm
Tube length (transportation) 2000 mm
Tube length (extended) 2500 mm
OTA weight 50kg

Further technical details:

Chromatic Focal Shift
Chromatic Focal Shift
Polychromatic Diffraction MTF
Polychromatc Diffraction MTF
Longitudinal Aberation
Longitudinal Aberration
Spotdiagram
Spotdiagram
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Specifications

Additional Information

Manufacturer TEC
Manufacturer SKU (#) 250 1950
SKU (#) 1351090
Optical Design Apochromatic Refractor
Clear Aperture 10" (250 mm)
Focal Length 2200 mm
Focal Ratio f/8.8
Optical tube length 79" (2000 mm)
Photographic Resolution 0.5 arc sec
Angular Field of View 0°.5
Linear Field of View (1000 m) 16.5 mm
Optical Tube Weight Copy 110lb (50 kg)
Tube diameter (max) 10" (254 mm)
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