Bresser Messier NT203s/800 OTA features a fast parabolic main mirror and a Hexafoc focuser. It is an excellent tool for astrophotography. This is an aluminum tube with a classical design. The large primary mirror of 203 mm diameter allows for delivering deeper images and a faster optical system. The 85 mm secondary mirror prevents vignetting. The excellent 2.5' Hexafoc focuser makes focusing easy due to its large diameter and smoothness and shifting-free operation. You will love astrophotography with this optical tube. It is easy to take pictures due to the tube rings with a 44 mm universal standard dovetail and a high-end finderscope with a crosshair and laser-engraved scale.


  • Aperture: 203 mm
  • Focal length: 800 mm
  • Focal ratio: f/3.9
  • Backfocus fully inward focused: 60 mm
  • 85 mm secondary mirror for optimal illumination
  • Diffraction limited optics with parabolic main mirror
  • Large knobs for primary and secondary mirror adjustment

The kit includes:

  • Aluminum tube with optics
  • Tube rings with a handle and camera mounting feature
  • 8x50 finderscope with a reticle
  • 26 mm Super Plössl
Brand Bresser GmbH, Germany
Warranty, years 10
Package size (LxWxH), cm 100x41x38
Shipping Weight, kg 15.0
Optical design reflector
Optical scheme Newtonian
Objective lens diameter (aperture), mm 203.0
Primary mirror diameter (aperture), mm 85.0
Focal length, mm 800
Magnification, x 20—400
Aperture ratio f/3.9
Eyepieces 26mm
Finderscope optical, 8x50

Returns Policy

We have a 14-day return policy. If you are not satisfied with your purchase, please return it in its original packaging and be sure to put the original product packaging inside the shipping box to avoid any damage..

All items must be in their original condition and unused. The value of your purchase will be refunded. .

Shipping charges will not be refunded.

If the return is due to a defective product, you may be compensated for the return shipping.

Please contact us for more details if you need to make a return..


- From 0 to 2 kg - shipping cost: 12,50 euros.

- From 2.001 kg to 30 kg - shipping cost: 17,00 euros.

- From 30,001 kg - shipping cost: 30,00 euros.

In case of collection at our warehouse or resale points - the shipping is free.

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