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70×
Saturn at 70× in 70 mm — exit pupil 1.0 mm, Bortle 6 sky. Computed, not photographed.

70–90 mm refractor on an alt-az mount

Meade Infinity 70AZ

The shape most people picture when they picture a telescope. Sealed tube, nothing to collimate, and a standing eyepiece height that suits sharing.

€119seen 7 Oct 2026 at Astroshop

  • 70 mmAperture
  • f/10.0Focal ratio
  • 5 kgTypical weight
  • 12–140×Useful magnification

Should you buy it?

  • Yes if what you mainly want is sharing it with children: that is what this family does best.
  • No if your priority is nebulae, clusters and galaxies, by eye: other families do better for the same money.

Computed from its family's per-goal scores and its own numbers — not a rating, not one evening's opinion.

Where to buy

Also search at First Light Optics · Optique Unterlinden · Pierro Astro · Teleskop-Express (searches; neither price nor stock checked)

1 of these 5 links earn us a commission, marked above. Sorted by price, never by what pays. How this site is funded.

Prices are observed on the date shown, never live. Links marked earn us a commission and cost you nothing extra.

What it shows, really

These circles are simulations, computed from the aperture, the magnification and the sky — indicative, not exact. A real night also depends on the turbulence, your eyes and your experience. Closer to the truth than the photo on the box; still not a promise.

Under a suburban sky (Bortle 6), through a common 25 mm eyepiece for wide targets and a 10 mm for planets. Every circle is the true field — nothing is enlarged.

Photo credits

These thumbnails are built from real photographs, scaled and darkened by the same arithmetic as the large view.

  • The Moon: NASA Scientific Visualization Studio / LRO, public domain
  • The Orion Nebula: NASA, ESA, M. Robberto (heic0601a), CC BY 4.0
  • The Andromeda Galaxy: Adam Evans, Wikimedia Commons, CC BY 2.0
  • The Hercules Cluster: Wikimedia Commons, Messier_13.jpg, CC BY-SA

The numbers

Meade Infinity 70AZPhoto: Astroshop
Aperture70 mm
Focal ratio700 mm · f/10.0
MountAlt-az on an aluminium tripod
Typical weight5 kg
Eyepieces25 mm and 9 mm
Useful magnification12× to 140× at 70 mm
Resolution (Dawes)1.7″ — the tightest double star this aperture can split
Faintest star, suburban skyaround magnitude 10.5
Observed price€119 seen 7 Oct 2026 at Astroshop

Made for

  • Sharing it with children

    Standing height, sealed tube, and no mirror to knock out of line.

  • The Sun

    In white light: sunspots with their penumbra, faculae near the edge, and granulation on a steady morning. Dawes' limit on the Sun: 1.7″ (116 ÷ 70 mm, arithmetic). Measure the outside diameter first, then one of: euro EMC SF100 (57–71 mm), Omegon Helievo 72 (64–88 mm), Omegon Helievo 92 (84–108 mm), Omegon Helievo 112 (104–128 mm) (€50–€69). Every time: certified filter over the front · finder capped · never an eyepiece filter · an adult with children · never without the filter · measure first.

Not made for

  • Nebulae, clusters and galaxies, by eye

    Bright clusters and the Orion Nebula. Galaxies are mostly out of reach.

The Sun, safely

No solar filter in the box

The Sun with this model

No source we have states the outside diameter of its tube or dew shield. Measure it at the front, then take the cell whose range holds it. For 70 mm of aperture, one of these:

In white light: sunspots with their penumbra, faculae near the edge, and granulation on a steady morning. Dawes' limit on the Sun: 1.7″ (116 ÷ 70 mm, arithmetic).

  • euro EMC SF100 (57–71 mm): holds 57–71 mm, €50 (seen 26 Sept 2026) Astroshop
  • Omegon Helievo 72 (64–88 mm): holds 64–88 mm, €55 (seen 26 Sept 2026) Astroshop
  • Omegon Helievo 92 (84–108 mm): holds 84–108 mm, €59 (seen 26 Sept 2026) Astroshop
  • Omegon Helievo 112 (104–128 mm): holds 104–128 mm, €69 (seen 26 Sept 2026) Astroshop

The listing names no standard; no international standard exists for filters on telescopes, binoculars or lenses (AAS).

Every time

  • A certified solar filter over the FRONT of the instrument, fastened so it cannot slip or blow off.
  • Cap or remove the finder. It is a second telescope, and it has no filter.
  • Never a filter at the eyepiece end: the concentrated sunlight there can crack it in an instant.
  • With children, an adult is there every time.
  • Never look, or point, without the filter on. Check it before each use; a scratched or torn filter goes in the bin.
  • Measure before ordering. A cell that sits loose can fall off.
Sources for the Sun

The family it belongs to: 70–90 mm refractor on an alt-az mount

What it does well

  • Point it and look. No collimation, ever
  • The eyepiece stays at a comfortable height wherever you aim
  • Doubles as a daytime spotting scope

What it costs you

  • 70–90 mm is not much light. Deep sky is a short list
  • Cheap achromats show a violet fringe on the Moon and bright planets
  • The bundled tripod is usually the weak part — a wobbly tripod ruins a good tube

Worth knowing about this model

The 9 mm eyepiece gives 78× on 70 mm, an exit pupil of 0.9 mm; with the 2× Barlow in the box it reaches 156×, an exit pupil of 0.45 mm, past the 140× that 70 mm can use. 5 kg in all, tripod included.

Everything about 70–90 mm refractor on an alt-az mount →

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Read next

€119seen 7 Oct 2026 at Astroshop

Where to buy