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Tube Assemblies

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Optical system: Newton
Highest practical power: 400x
Objective lens diameter: 203 mm
Focal length: 1200 mm
Focal ratio: f/6

Bresser Messier 203/1200 Optical Tube Assembly

ONLY £356.00

Optical system: Newton
Highest practical power: 400x
Objective lens diameter: 203 mm
Focal length: 1000 mm
Aperture ratio: f/5
Eyepiece diameter: 31.7 mm (1.25") and 50,8mm (2")

Bresser Messier NT-203/1000 Hexafoc Optical Tube Assembly

ONLY £356.00

Optical system: Acromatic Fraunhofer refractor
Highest practical power: 254x
Objective lens diameter: 127 mm
Focal length: 635 mm
Aperture ratio: f/5
Eyepiece diameter: 50.8 mm (2") / 31.7 mm (1.25")

Bresser Messier AR-127S/635 Optical Tube Assembly

ONLY £365.00

Optical system: Achromatic Fraunhofer refractor
Highest practical power: 300x
Objective lens diameter: 152 mm
Focal length: 1200 mm
Aperture ratio: f/7.9
Eyepiece diameter: 50.8 mm (2") and 31.7 mm (1.25")

Bresser Messier AR-152L/1200 Hexafoc Optical Tube Assembly

ONLY £492.00

Optical system: 4-Lens achromatic refractor
Highest practical power: 300x
Objective lens diameter: 152 mm
Focal length: 760 mm
Aperture ratio: f/5
Eyepiece diameter: 50.8 mm (2") and 31.7 mm (1.25")

Bresser Messier AR-152S/760 Hexafoc Optical Tube Assembly

ONLY £509.00
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