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Gsn1509ota

GSO Guan Sheng Optical
in stock
GSO 150mm f/6 Newtonian Telescope - 2" Crayford - opt. tube


235,00 EUR
incl. 19 % Tax
excl. 7,20 EUR Shipping costs


Description

TS 6" F6 Newtonian Telescope from GSO - optical tube with cradle rings and finder
... aperture 6" - focal lengh 900mm - f/6 with 2" crayford focuser
... powerful allround telescope for observing and astrophotography


GSO 150mm f6 Newton Teleskop

Newtonian telescopes made from GSO for Teleskop Service have a well known reputation for the highest quality optics avaiable in this price range. Due to the very stable steel tube as well as the precice dual speed crayford focuser the GSO 8" f/5 Newtonian telescope is a strongly recommanded combination for astro photography as well as visual observing.

This GSO Newtonian 150/900mm is on of the best solutions in this range. This telescope offers more contrast than the typical 6" f5 newtonian telescope. It adds a package of extra features that are in our opinion unparalleled in this class:

-- high definition parabolical primary mirror, better than typical Chinese mirrors
-- thin secondary mirror spider vanes for minimized obstruction
-- larger illuminated field through use of a well-dimensioned secondary mirror (50mm diameter)
--An ultra-smooth Crayford focuser for much smoother focusing motion and zero image shift.
-- 94% enhanced reflection for a brighter image
-- rigid steel tube instead of a wobbly aluminium tube

The 2" Crayford focuser:

GSO 150mm Newton - Fangspiegel

For this newtonian telescope we have used an excellent 2" Crayford style focuser. These focusers have zero image shift and move very smoothly. This GSO focuser is fully compatible with the TS Motorfocus system, allowing vibration free and easy focusing for high power visual observing or astro-imaging. The crayford holds eyepieces or cameras with a very good stabiltiy.

Parabolical Primary Mirror

The very precisely figured parabolical primary mirror of this telescope is not made of cheap float glass, but rather of BK-7 optical glass that is free of internal stress. Thermic properties are generally better than float glass. At the same time the mirror is way more affordable than more exotic primary mirror substrates that in our opinion bring hardly any advantage at all (see comments under "Primary Mirror Cooling Fan"). For easier collimation the mirrors are properly center marked.

Technical details of the optical tube:

-- Aperture 150mm (6") / focal length 900mm / photographic speed f/6
-- 94% enhanced reflectivity coatings for a brighter picture
-- Seconcary mirror: 50mm diameter (minor axis)
-- Weight: 6,2 kgs with tube rings and finder
-- Outer diameter: 178mm
-- Tube length: 840mm
-- 2" Crayford focuser with 1,25" adapter

Scope of delivery:

-- GSO 150mm f/6 Newtonian - Optical Tube Assembly with tube rings
-- 6x30 finder
-- 2" Crayford focuser with reducer to 1.25"
-- Dust covers
-- Collimation manual

For this newtonian telescope we have used an excellent 2" Crayford style focuser. These focusers have zero image shift and move very smoothly. This GSO focuser is fully compatible with the TS Motorfocus system, allowing vibration free and easy focusing for high power visual observing or astro-imaging. The crayford holds eyepieces or cameras with a very good stabiltiy.Technische Daten:

Öffnung / Brennweite / Öffnungsverhältnis: Öffnung 150mm / Brennweite 900mm / Öffnungsverhältnis 1:6
Hauptspiegel: parabolisch - mit zentraler Markierung zur leichteren Justage
Fangspiegel: Durchmesser 50mm ( kleine Achse )
Okularauszug: 2" Crayford Auszug - Ringklemmung - Reduzierung für 1,25" Zubehör
Sucher: 6x30 Sucher mit Schnellkupplung
Gewicht: . Komplett mit Rohrschellen und Sucher - 6,2 kg
Tubus: solider Metalltubus - Durchmesser 178mm - Länge 84 cm

Lieferumfang:

-- Optischer Tubus mit Rohrschellen und 6x30 Sucher
-- 2" Crayford Auszug mit Reduzierung auf 1,25" - mit Ringklemmung


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E-Mail: info@teleskop-service.de • Phone: +49 (0)89-1892870 • Fax: +49 (0)89-18928710
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