BRESSER MESSIER NT-203S/800 EXOS-2/EQ5

Product.Nr.: 4703808

949,00 EUR

  • Derzeit nicht lieferbar Derzeit nicht lieferbar

product description

  • Fotonewtonian f/3.9 with 2,5" Hexafoc
  • Aperture: 203mm; Focal Length: 800mm f/3.9
  • Excellent 2,5" Hexafoc Focuser with possibility to upgrade to a 10:1 reduction
  • Large 85mm secondary mirror
  • Elaborate 6 point flotation system for mirror support
  • Large knobs for primary and secondary mirror adjustment
  • Equat. EXOS-2 mount with a max. load of 13 kg
  • Solid stainless steel field tripod for maximum rigidity
  • Precision mount with ball bearings in all axis and adjustable polar finder scope with optional illumination
  • GoTo motors + Startracker optional (part no. 4951750)
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 and fast parabolic main mirror. 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. Also prepared for use with the HR Coma Corrector (part No. 0510330) which eliminates coma, field-curvature and astigmatism.

Mount and Tripod. The BRESSER EXOS 2 is a rugged mount with high rigidity and precision tracking for visual observation and astrophotography. The tripod is extremely rigid to suppress vibrations really well. This model is very well machined and has an illuminated polar finder scope and precise graduated circles. A powered twoaxis control (BRESSER Exos Duo) or a GoTo-Kit is available as an optional extra. The BRESSER EXOS 2 can take the weight - depending on length and use of up to 13 kg. This allows you to use refractors of up to 152 mm aperture and mirror telescopes of up to 203 mm aperture.


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
  • Cradle rings with handle and integrated piggyback camera holder (1/4 thread)
  • Large knobs for primary and secondary mirror adjustment
  • Dovetail plate with stainless steel rail 
  • Adjustable polar finder scope with optional illumination
  • Bubble level for easy tripod setup 
  • Ball beared axes (RA / DEC) and worm gears for smooth and precise tracking

     
SCOPE OF DELIVERY
  • Telescope tube and EXOS II EQ mount with stainless steel field tripod
  • Tube rings with handle and camera mounting feature
  • 8x50 Finderscope recticle and true oriented view
  • integrated 31.7 mm and T2 adapter
  • adapter for 50.8 mm (2")
  • mounting ring (for EXOS and LXD-75, EQ-5)
  • handle with camera holder
  • 8x50 Viewfinder
  • adjustable polar finder scope with optional illumination
  • 26mmm Super Plössl
  • astronomy PC software Stellarium
  • Telescope book
  • rotatable star map
 

Additional technical data

  • Backfocus fully inward focused: 60mm

Technical Data

FIELD OF APPLICATION
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OPTICAL SPECIFICATIONS
GENERAL TECHNICAL DATA
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Field of application
  • Deep Sky Observation
  • Deep Sky Photography
  • Lunar observation
  • Planetary observation
  • Planetary photography
Focus Group
  • Advanced Amateurs
  • Visual enthusiasts
  • Specialists and Research
Product FamilyReflector telescope
Optical designNewtonian Reflector
Magnification from20
Magnification up to400
Material Primary mirrorBK-7
Primary mirror diameter203 mm
Secondary mirror diameter85 mm
Objective diameter203 mm
Focal length800 mm
Aperture ratio3.9
Angular resolution0.56 arc seconds
Finderscope8 x 50 mm
Mount TypeGerman/Equatorial Mount
Material OTAAluminium
Polefinder scopeincluded, illumination optional
Bearing in alt-azimuth / RA2 ball bearings
Bearing in elevation / DEC2 ball bearings
Material tripod3Stainless Steel
Focusing system2.5" Hexafoc
  
Net weight OTA (incl. accessories)11.5 kg
Total length100 cm
Total width100 cm
Total height175 cm
Tube diameter235 mm
Tube length700 mm
Net Weight total (incl. accessories)30.5 kg
Net weight mount (incl. accessories)19 kg
Counterweight9 kg
Eyepiece Barrel Diameter50.8 mm