GSO Telescope N 254/1016 Imaging Newton OTA

Télescope Newtonien 254/1016

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GSO Telescope N 254/1016 Imaging Newton OTA

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GSO Telescope N 254/1016 Imaging Newton OTA

This Newtonian reflector is optimized by fast focal ratio of f / 4 for astrophotography and widefield observation.

The large-sized secondary mirror and the quality Okularauszug guarantee optimum illumination of the visual field in photography and also in monitoring. In the design of the reflector value was placed on high stability and rigidity.

The benefits at a glance:

  • fast and diffraction limited optics and f / 4 for short exposure times
  • 94% forced mirroring on primary and secondary mirror
  • High quality focuser, also for heavy cameras
  • built-in cooling of the primary mirror for fast cooling of the telescope
  • comfortable focus position - also allows the use of DSLR cameras & Off Axis Guider

The reflector is optimized for a very good illumination. The diameter of the front bezel is generously sized, so that the tube does not shade itself. Also, the secondary mirror guarantees an image free from disturbing shading, even when using large format camera Senoren.



Type Reflector
Type of build Newton
Aperture (mm) 254
Focal length (mm) 1016
Aperture ratio 4
Resolving capacity 0,45
Limit value (mag) 13,8
Light gathering capacity 1320
Max. useful magnification 508
Tube length (mm) 980
tube diameter (mm) 303
Tube material Steel


Secondary mirror diameter (mm) 88
Primary mirror - Material B270
Ventilation for central mirror yes
reflectivity 94
Secondary mirror obstruction 35


Type of build Monorail
Connection ( to eyepiece) 2
Gear reduction 1:10 Fine movement


Mounting type no mount
GoTo control no
Type of build OTA
Tracking no

Included accessories

Finder scope 8x50
Tube clamps yes
Eyepiece adaptor 1,25" & 2"
Prism rail without


Total weight (kg) 15,3

Area of application

Moon & Planets yes
Nebulae & galaxies yes
Nature observation no
Astrophotography yes
Sun not recommended (Only with appropriate Sun filter)

recommended for

Beginners no
Advanced yes
Experienced amateurs no