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Telescopes > GSO > GSO Telescope N 305/1500 OTA
Product no.: 47050

Telescope N 305/1500 OTA

$ 1,180.00 incl. VAT, plus shipping costs
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Product description

GSO Newtonian telescopes are known for their solid manufacturing and exceptional optical quality. The robust mechanics are particularly suited to their use in astrophotography. Even heavy cameras are well supported by the focuser.

After the great successes experienced by GSO’s smaller Newtonian telescopes, many have been awaiting the larger 10” and 12” Newtonians. A telescope with so large an aperture does not only reveal all there is to see on our Moon and the planets Mars, Jupiter and Saturn, but is also very interesting for deep sky observation - and all this with one hundred percent astrophotography suitability!

The advantages at a glance:

  • Very good diffraction-limited optics
  • Solid and adjustable metal primary mirror and secondary mirror supports
  • Slim secondary mirror supports for maximum contrast
  • High-quality focuser
  • Generous focal plane for visual and photographic use
  • Primary mirror ventilation for faster cooling
  • Powerful multi-coated 8x50 viewfinder with quick connector

The 2” Crayford focuser with micro-reduction: The focuser is an essential part of the telescope. It should facilitate delicate focusing and also hold heavy equipment. This telescope's focuser is a high-precision Crayford focuser with micro-reduction and robust ball bearings. This facilitates smooth adjustments, even when carrying loads upwards of 3kg.

Positioning accuracy is less than 0.08mm. This level of precision is sufficient to find the exact focal point even with high-resolution sensors and to get the most out of your optics.

It not only matters which telescope you buy but also where you buy it. Our additional services:

  • We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.
  • We provide a copy of the 80-page Telescope ABC beginners handbook with every telescope.
  • We also provide an edition of the exciting astronomy magazine, “Sterne und Weltraum” with each telescope.

Specifications

Optics


Type
Reflector
Type of build
Newton
Aperture (mm)
305
Focal length (mm)
1500
Aperture ratio (f/)
5
Resolving capacity
0,38
Limit value (mag)
14,2
Light gathering capacity
1900
Max. useful magnification
610
Tube length (mm)
1400
tube diameter (mm)
356
Tube material
Steel
Tube construction
Full tube

Reflector


Ventilation for central mirror
yes
Main mirror´s construction
parabolic
reflectivity
94
Primary mirror - Material
BK7

Focuser


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

Mount


Mounting type
no mount
GoTo control
no
Type of build
OTA

Included accessories


Finder scope
8x50
Tube clamps
yes
Eyepiece adaptor
1,25" & 2"

General


Total weight (kg)
22

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
Observatories
yes

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*All prices include VAT plus shipping costs.

GSO Telescope N 305/1500 OTA

2" focuser, with adapter for using 1.25" eyepieces.

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