Bresser Messier NT203s/800 Optical Tube

In the past few years the Bresser Newton telescopes have become the standard workhorse for Deep Sky astrophotography. We now proudly present the second generation of this telescope, the Bresser NT-203s/800 with Hexafoc. The Bresser NT-203s/800 f3.9 will deliver you deeper images due to its - compared to 8" f/5 systems - oversized primary mirror and therefore faster optical system with the same exposure time. The big 85 mm secondary prevents vignetting for optimal illumination The excellent 2,5" Hexafoc focuser also does not cause vignetting due to its large diameter and makes focussing a joy - the smoothness and shifting-free operation sets new standards in this price class. This groundbreaking focuser, tube rings with 44mm universal standard dovetail and camera mounting feature and a high-end finderscope with haircross and laser-engraved scale  leave nothing to desire even for demanding astrophotographers. The NT-203s/800 Hexafoc has a classical tube construction with an aluminium tube. The focuser can be upgraded with a 10:1 reduction (part No. 0625720) without problems. Ready to use with the  HR Coma Corrector (part No. 0510330) which eliminates coma, field-curvature and astigmatism.

FEATURES

• Tube without accessories: 8,7 kg - Tube with all accessories mounted: 11,5 kg
• Aperture 203 mm
• Focal length 800 mm
• Focal ratio f/3,9
• 85mm secondary mirror for optimal illumination
• Diffraction limited optics with parabolic main mirror
• Large knobs for primary and secondary mirror adjustment

SCOPE OF DELIVERY

• Aluminium tube with optics
• Tube rings with handle and camera mounting feature
• 8x50 Finderscope with recticle
• 26mmm Super Plössl
  

Additional technical data

• Backfocus fully inward focused: 60mm