Refractor 175

JTW Astronomy athermalised apochromatic refractor, model
125 mm f/6 athermalised apochromatic refractor, made in-house
Price (Excl.VAT)

16999

Aperture (mm)175
Aspheric ElementYes
Recommended mount typeGEM
Tube tubeClosed
Focal length (mm)1050
Tube length (transport)1200
Tube length (operating)1500
OTA Weight (kg)20
Back focus200
Optional back focus reducer100
Focal ratio F/6
Fully corrected imaging circle (mm)55
Purge systemYes
Lens CoatingsBBAR and edge
FocuserDual speed JTW Rhino
Clear aperture (mm)75
Tube constructionAthermalised full metal
Optical surface quality (Strehl, PTV)0.97, 1/10
BoltingA4 Stainless steel
Metal protectionDual
Surface treatmentAluminium – 20 micron hard-coat anodising
PaintExterior grade powdercoat (environmentally friendly)
Anti dew systemIncluded