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home > Explore Scientific FirstLight 90mm f/5.5 Doublet Refractor Telescope with Alt-Az Mount > Explore Scientific FirstLight 90mm f/5.5 Doublet Refractor Telescope with Alt-Az Mount
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Explore Scientific FirstLight 90mm f/5.5 Doublet Refractor Telescope with Alt-Az MountA complete 90mm doublet refractor telescope kit with a yoke style alt az mount, tripod, and two eyepieces everything a beginner needs to start observing the Moon, planets, and bright deep sky objects at the lowest entry price in the FirstLight lineup. The 90mm air spaced doublet objective gathers enough light to show lunar craters, Saturn's rings, and Jupiter's cloud belts. The erect image diagonal delivers correctly oriented views for daytime
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A complete 90mm doublet refractor telescope kit with a yoke-style alt-az mount, tripod, and two eyepieces — everything a beginner needs to start observing the Moon, planets, and bright deep-sky objects at the lowest entry price in the FirstLight lineup.

The 90mm air-spaced doublet objective gathers enough light to show lunar craters, Saturn's rings, and Jupiter's cloud belts. The erect-image diagonal delivers correctly oriented views for daytime terrestrial use as well. Two Kellner eyepieces (9mm and 20mm) provide low and high magnification out of the box.

The yoke-style alt-az mount moves smoothly up/down and left/right with no alignment required — just point and look. The full-size aluminum tripod with accessory tray sets up in under a minute.


Key Features
  • 90mm f/5.5 air-spaced doublet refractor
  • Yoke-style alt-az mount with adjustable aluminum tripod
  • Two Kellner eyepieces: 9mm (56x) and 20mm (25x)
  • 1.25" erect-image diagonal for correct orientation
  • Red-dot finder and smartphone camera adapter included

Ideal For
  • First-time telescope buyers — the simplest setup in the FirstLight line
  • Kids and families — no alignment, no learning curve, just point and observe
  • Daytime use — the erect-image diagonal makes this a capable spotting scope

Explore Scientific FirstLight 90mm f/5.5 Doublet Refractor Telescope with Alt-Az Mount

Item no : 91073864471
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US$ 59.99
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Min. order: 1piece

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Ships within 48 hours · Estimated delivery Jun 22 - Jun 27

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US$ 59.99

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US$ 41.99

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US$40

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