iOptron R90 90mm f/5.6 Doublet Refractor Telescope (OTA Only)

iOptron R90 90mm f/5.6 Doublet Refractor Telescope (OTA Only)

iOptron R90 90mm f/5.6 Doublet Refractor Telescope (OTA Only)

B&H # IO8711 MFR # 8711
iOptron R90 90mm f/5.6 Doublet Refractor Telescope (OTA Only)

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Expected availability: 7-14 business days

Product Highlights

  • 90mm Acromatic Refractor
  • 500mm Focal Length, f/5.6 Focal Ratio
  • Anti-Reflection Fully Multicoated Optics
  • 1.25" Focuser, 10mm and 25mm Eyepieces
  • 45° Erect-Image Diagonal Prism
  • Vixen-Style Dovetail Plate
  • Requires Mount and Tripod
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This item is noncancelable and nonreturnable

$0.00 Tax Collected Outside NY and NJ

You Pay: $189.00

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  • 1Description

The R90 90mm f/5.6 Doublet Refractor Telescope from iOptron features a doublet achromatic lens system with their proprietary anti-reflection fully multicoated optics to produce images with reduced chromatic and spherical aberrations for clear and bright images without distortion across the entire field of view, with true color rendition. This is a versatile optical tube assembly that can be employed as a simple grab-and-go primary telescope, or as a terrestrial spotting scope. It has a fast f/5.6 focal length which makes it ideal for astrophotography of the Moon, planets, or bright and large deep-sky objects.

Two included eyepieces yield magnification of 20x and 50x, and the rack-and-pinion focuser accepts any other 1.25" eyepieces and accessories adding to its versatile nature. An included 45° erect-image diagonal corrects images horizontally and vertically when using the OTA as a spotting scope. The scope is offered without a mount or tripod, but an included Vixen-style dovetail plate makes it compatible with any alt-az or equatorial mount with a Vixen-style saddle.

Optical Performance
  • 90mm objective lens
  • 500mm focal length
  • Focal ratio: f/5.6
  • Doublet refractor-style optical design
  • Doublet achromatic lenses reduce chromatic and spherical aberrations for improved color rendition and without distortion across the entire field of view
  • Anti-reflection fully multicoated optics reduce light loss
  • Resolution power: 1.29 arc sec
  • Two-speed 1.25" rack-and-pinion focuser
Included Accessories
  • Eyepieces:
    • 25mm eyepiece yields 20x power
    • 10mm eyepiece yields 50x power
  • Diagonal:
    • 45° viewing angle
    • Erect-image prism corrects image horizontally and vertically for terrestrial use
Mounting
  • Vixen-style dovetail plate included
  • User-supplied mount and tripod required
  • Compatible with any alt-az or equatorial mount with a Vixen-style saddle
In the Box
iOptron R90 90mm f/5.6 Doublet Refractor Telescope (OTA Only)
  • 25mm Eyepiece
  • 10mm Eyepiece
  • 45° Erect-Image Diagonal
  • Frong Dust Cap
  • Limited One-Year Warranty
  • Table of Contents
    • 1Description
    Optical Design Doublet refractor
    Aperture 90 mm
    Focal Length 500 mm
    Focal Ratio f/5.6
    Eyepiece Barrel Diameter 1.25"
    Diagonal 45° erect-image
    Finderscope None
    Tripod None
    Mount Type Vixen-style dovetail
    Optical Tube Length 19.0" / 48.3 cm, without diagonal and eyepiece
    Weight 4.0 lb / 1.8 kg, with diagonal and eyepiece
    Packaging Info
    Box Dimensions (LxWxH) 20.0 x 7.0 x 7.0"

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