Altair Astro 150-SS F5 Newtonian Telescope OTA

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With a well-known reputation for the highest quality optics available in this price range, as well as a CNC machined focuser, the Altair Astro 150-SS F5 Newtonian is an entry level option for anyone interested in visual observing and who also wants to try astro photography, sporting a CNC Machined Crayford focuser with 2" adapter, 35mm extension tube, 6x24mm finder scope, and a good quality 20mm Super View Plossl Eyepiece. Included with the Altair 150-SS: 2" Crayford single speed focuser with 1.25" adapter, 6x24mm finder scope, tube rings and Vixen/Synta format dovetail bar and 20mm Superview Plossl eyepiece (37.5x magnification).

Altair Astro Product Description

Visual observing:
The Altair/GSO F5 Newtonian parabolic optics are smooth and well figured. In our opinion probably he best available in this price range. They will easily display high contrast images of planets and deep sky objects against a dark background, with minimal scatter around bright objects. The 150mm aperture is enough to reveal plenty of detail on the moon and planets and structure is visible in brighter deep sky objects like the Orion Nebula, Dumbbell nebula and our closer galaxies. This telescope includes a CNC machined Single Speed focuser which is fully tension adjustable - which is a definite benefit for astro-photography. To get you started we've included a good quality 20mm Super view Plossl eyepiece which is much higher quality than the package eyepieces you get with most entry level telescopes. A wide field view of 37.5x is available out of the box, but just add a one of our 3x Barlow lenses, and it will deliver very sharp views of planets at 90x. Add one of our 15mm wide field eyepieces for additional flexibility for powers of 150x with the Barlow lens or 100x without (see related product links below).

Deepsky Imaging:
The relatively fast F5 focal ratio provides a less coma at the edge of the field than an F4 model. The Altair 150-SS telescope responds very well to most coma correctors as a result of the F5 focal ratio, and what's more, spacing is less critical than with an F4 Newtonian. Collimation is very easy with our optional Altair v2 laser collimator (see related product links below) and usually takes less than 2 minutes. The 150mm F5 format therefore makes a generally more tolerant telescope for beginners starting imaging, with a light weight motorised equatorial mount like the EQ2-3 or EQ5. (We've included some mount options - please see dropdown menu links below next to the price field, which will update as you make your mount choice).

Included with the Altair 150-SS:

  • 2" Crayford single speed focuser with 1.25" adapter
  • 6x24mm finder scope
  • Tube rings and Vixen/Synta format dovetail bar
  • 20mm Superview Plossl eyepiece (37.5x magnification)

Recommmended accessories:

  • Mount or no mount options in dropdown menu below
  • 3x ED Barlow lens for webcam imaging or visual use
  • 15mm (50x) or 20mm (37.5x) wide field 70 degree eyepieces to give you some extra range for viewing different objects
  • Altair v2 Laser Collimator - collimate your telescope in minutes
  • Webcam adapter and 1.25" IR cut filter combo for webcam imaging
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    Product Specification

    Diagonal None
    Diameter (mm) 150
    Eyepiece 1 20mm Superview Plossl
    Finderscope 6x24 Finderscope
    Focal Length (mm) 750
    Focal Ratio (f/) 5
    Included Accessories 20mm Superview Plossl, 2 Inch Crayford Focuser, 6x24mm Finderscope, Tube-rings, Dovetail bar
    Magnification with Supplied Eyepiece (x) 37.5
    Mount Type None Supplied
    Optical Design Newtonian Reflector
    Power Source NA
    Tripod Type None Supplied
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    Product Code: 1552131-wex Manufacturers Part Number: AA-150SS-OTA Got a question? Get it answered...