High Grade Dobsonian 400

The humble Dobsonian telescope, done properly. These instruments are for amateurs who have outgrown their mass produced telescope. Our newtonian telescopes feature 1/8th PTV optics and an integrated corrector.

These Dobsonians are built around our corrected newtonians. The specifications are idential but a high quality dobsonian mount is included.

Price (Excl.VAT)

6699

Aperture (mm)400
Integrated mountAlt-Az
Tube tubeTruss
Focal length (mm)1600
Tube length (transport)1150
Tube length (operating)1350
OTA Weight (kg)30
Back focus150
Focal ratio F/4
Fully corrected imaging circle (mm)50
Cooling fansPrimary and secondary mirror
AirflowLaminar flow & Rear
Mirror coatingsEnhanced Aluminium + SiO2 protective layer
FocuserDual speed JTW Rhino
Tube constructionCarbon fiber
Optical surface quality (Strehl, PTV)0.97, 1/10
Primary mirror substrateSchott Supremax 33
Primary mirror cell9 point floatation cell
Primary baffleOTA baffles
Secondary mirror substrateSchott Supremax 33
Secondary mirror cell3 point RTV
CorrectorIntegrated 2-element
BoltingA4 Stainless steel
Metal protectionDual
Surface treatmentAluminium – 20 micron hard-coat anodising
PaintExterior grade powdercoat (environmentally friendly)
Anti dew systemOptional