The GSO 12 "Newton is checked and adjusted by us before delivery.

All Newtonian telescopes should be adjusted before first use and then periodically for a clear image. We adjust all of our Newton before they leave our house.

How we adjust: About us

These telescopes are shipped free of charge in Germany.

Please contact for advice on this telescope. So you can benefit from our experience before buying




 

GSN3001OTA GSO 305 / 1500mm 12 "Parabolic Newton 94% Reflection - OTA

GSO Newton - aperture 305mm - focal length 1500mm - aperture ratio f / 5 - tube with optics
Diffraction-limited Parabolic Newton - 94% forced mirroring


GSO Newton Telescopes are known for their solid manufacturing and excellent optical quality. The robust mechanism allows in particular the astrophotographic use. Even heavy cameras are well supported by the focuser. After the great successes of GSO's smaller Newtonian telescopes, many have been waiting for the powerful 12 "Newton, which in most of our latitudes shows everything that can be seen on the moon and planets.The bright, high-contrast image of the diffraction-limited 12" mirror shows also structures in galaxies and nebulae, which are usually used only from astrophotographies ago.

Applications of the GSO 12 "Newton Telescope:

Moon and planets
The diffraction-limited 12 "Newton shows just about everything seen through earth-bound astronomy, with the help of high-resolution cameras, and even more details can be visualized with the help of high-resolution cameras, as with the naked eye Due to the moderate shading by the secondary mirror of 26%, enlargements of up to 600 times are possible without the image becoming dull, provided, of course, by a correspondingly quiet air.

Observation of nebulae and galaxies
12 "apertures reveal details in nebulae and galaxies that have previously been used only to astrophotography, with bright nebulae such as the Orion Nebula or even high-contrast planetary nebulae even displaying a hint of color.

Astrophotography:

The increasingly popular field of amateur astronomy is this Newton cut like cut. The metal tube (steel - no soft aluminum) is particularly solid, the same applies to the focuser. Even heavy cameras are carried without twisting. Due to the 1:10 reduction of the Okularauszuges the focus is very fine. Of course, there is enough back focus to get synonymous with DSLR cameras easily in the focal plane.

Key Benefits of GSO Newton:

- very good diffraction-limited optics - above China level
- Solid main and rearview mirror made of metal - adjustable
- thin Fangspiegelstreben for maximum contrast
- 2 "Crayford focuser with 1:10 micro reduction
- Generously laid focal plane - You reach with each eyepiece and also with cameras the focal plane
- very solid workmanship - no compromises to reduce a few kilograms - in the wrong place
- solid metal pipe clamps with a second bearing surface (for example for guide tubes)
- With F / 5 the Newton is a true all-rounder with very good results in all areas of responsibility
- Ventilation of the main mirror for faster cooling
- Powerful multivergüteter 8x50 viewfinder with quick coupling
- 94% forced mirroring for a brighter picture and shorter exposure times


The 2 "Crayford extract with micro reduction:

An essential part of the telescope is the extract. He should allow a sensitive focus and hold heavy accessories.

The extract of the GSN 2541 is a high-precision Crayford focuser with micro reduction and robust ball bearings. This allows jerk-free adjustment even with a load of over 3kg.

The setting accuracy is less than 0.08mm. This accuracy is sufficient to find exactly the focal point even with high-resolution sensors and thus to get the most out of the optics.


Technical specifications:

Aperture / focal length aperture 305mm / focal length 1500mm / f - 1: 5
Fangspiegeldurchmesser 80 mm - small axis
Net weight of the tube 22 kg (with clamps, pull-out and 8x50 viewfinder)
Diameter / length diameter - 356 mm / length 1400 mm
Main mirror BK-7 mirror carrier - Image is guaranteed to be diffraction-limited
Focuser 2 "Crayford with reduction 1,25" - Clamping via ring clamping - Micro reduction 1:10
Limiting magnitude 16,5mag
Resolution 0.39 "
Adjustment aid Central marking on the main mirror for easier adjustment


Delivery:


- GSO Newton 305mm / 1500mm
- Metal clamps
- 2 "Crayford focuser with 1:10 micro reduction
- 2 "extension sleeve for visual use
- Ventilation of the main mirror
- 8x50 viewfinder with quick coupling