Is the National Geographic 10×50 Porro a good first telescope?

Yes if what you mainly want is learn my way around the sky, taking it with me, sharing it with children: that is what this family does best. No if your priority is the moon and the planets: other families do better for the same money.

What can you see with the National Geographic 10×50 Porro?

Under a suburban sky, from its 50 mm aperture: The Moon (Recognisable), Saturn (Recognisable), Jupiter (Recognisable), The Orion Nebula (Detectable), The Andromeda Galaxy (Detectable). Useful magnification from 8× to 100×.

How much does the National Geographic 10×50 Porro cost?

€70 observed on 2026-10-07 at Astroshop. Prices move; that is what the date is for.

10×

The Pleiades at 10× in 50 mm — exit pupil 5.0 mm, Bortle 6 sky. Computed, not photographed.

10×50 binoculars

National Geographic 10×50 Porro

Name: National Geographic 10×50 Porro
Brand: National Geographic
Price: 70 EUR

Two small refractors you can hold. The most-recommended and least-bought first instrument in astronomy, and the one most likely to still be in use in ten years.

€70seen 7 Oct 2026 at Astroshop

See it at Astroshoppaid linkAll the sellers

50 mmAperture
f/4.0Focal ratio
0.8 kgTypical weight
8–100×Useful magnification

Should you buy it?

Yes if what you mainly want is learn my way around the sky, taking it with me, sharing it with children: that is what this family does best.
No if your priority is the moon and the planets: 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

Astroshoppaid link€70seen 7 Oct 2026→ships DE, FR, EU

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 paid link 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.

Through the binoculars as they are — a fixed 10×, under a suburban sky. Every circle is the true field.

The Moon10× · 50 mm 5.0 mm exit pupilRecognisable

Saturn10× · 50 mm 5.0 mm exit pupilRecognisable

Jupiter10× · 50 mm 5.0 mm exit pupilRecognisable

The Orion Nebula10× · 50 mm 5.0 mm exit pupilDetectable

The Andromeda Galaxy10× · 50 mm 5.0 mm exit pupilDetectable

The Hercules Cluster10× · 50 mm 5.0 mm exit pupilNot visible

Photo credits

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

The Pleiades: Wikimedia Commons, Plejades (M45).jpg, CC0
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

Photo: Astroshop

Aperture	50 mm
Focal ratio	200 mm · f/4.0
Mount	—
Typical weight	0.8 kg
Useful magnification	8× to 100× at 50 mm
Resolution (Dawes)	2.3″ — the tightest double star this aperture can split
Faintest star, suburban sky	around magnitude 9.8
Observed price	€70 seen 7 Oct 2026 at Astroshop

Made for

Learn my way around the sky
Nothing else teaches the sky this fast. Wide field, right way up, and the view matches what a star chart shows.
Taking it with me
Fits in a coat pocket's worth of bag.
Sharing it with children
A child can hold them, and there is nothing to break or misalign.

Not made for

The Sun
At binocular power: the big spot groups, small, and a partial eclipse whole. Measure the outside diameter first, then one of: euro EMC SF100 1B (48–61 mm), Omegon Helievo 60 (44–68 mm), euro EMC SF100 (57–71 mm), Omegon Helievo 72 (64–88 mm), Omegon Helievo 92 (84–108 mm) (€90–€118). Every time: certified filter over the front · finder capped · never an eyepiece filter · an adult with children · never without the filter · both sides · measure first.
The Moon and the planets
The Moon is genuinely lovely at 10× (50 mm, an exit pupil of 5 mm). The planets are points of light.

The Sun, safely

No solar filter in the box

The Sun with this model

No source we have states the outside diameter of its objective housings. Measure them first, then take two cells whose range holds them, one per side. One of these:

At binocular power: the big spot groups, small, and a partial eclipse whole.

euro EMC SF100 1B (48–61 mm): holds 48–61 mm, €45 each, two needed (seen 26 Sept 2026) Astroshoppaid link
Omegon Helievo 60 (44–68 mm): holds 44–68 mm, €50 each, two needed (seen 26 Sept 2026) Astroshoppaid link
euro EMC SF100 (57–71 mm): holds 57–71 mm, €50 each, two needed (seen 26 Sept 2026) Astroshoppaid link
Omegon Helievo 72 (64–88 mm): holds 64–88 mm, €55 each, two needed (seen 26 Sept 2026) Astroshoppaid link
Omegon Helievo 92 (84–108 mm): holds 84–108 mm, €59 each, two needed (seen 26 Sept 2026) Astroshoppaid link

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.
Binoculars: both sides filtered, always.
Measure before ordering. A cell that sits loose can fall off.

Sources for the Sun

American Astronomical Society — How to View a Solar Eclipse Safely — filters on optics go on the front; eclipse glasses never with optics; children supervised
American Astronomical Society — Solar Filters for Optics — eyepiece filters are dangerous; the finder capped, removed or filtered; the filter attached securely
American Astronomical Society — About the ISO 12312-2 Standard — EN ISO 12312-2:2015 covers naked-eye viewers only; no international standard covers filters on telescopes, binoculars or lenses
Société astronomique de France — Guide des observations solaires — a filter at the front, never one screwed into the eyepiece, the finder capped
NASA — Keep Your Eclipse Glasses to See the Sun's ‘Freckles’ — a large enough sunspot shows through eclipse glasses
AAVSO — Le Guide d'Observation Solaire de l'AAVSO, v1.1 (2017), p. 6 — archived copy — “Les ouvertures plus grandes que 100 à 125 mm sont généralement limitées par les effets de turbulence atmosphérique”; 50 to 80 mm is enough to count sunspots

The family it belongs to: 10×50 binoculars

What it does well

Ready in the time it takes to open the case
Both eyes, which makes faint things easier to see than the same aperture through one
Five to seven degrees of sky at once — no telescope shows the Pleiades whole
Useful for birds, and therefore used in daylight too

What it costs you

The planets stay dots. Jupiter's moons show; its belts do not
Hand shake costs about a magnitude of faint detail — a tripod adapter fixes it
No magnification to grow into

Worth knowing about this model

A field of 96 m at 1,000 m, about 5.5° (arithmetic): narrower than the 6.5–7° of some 10×50s. Splash-proof rather than waterproof, per the spec table.

Everything about 10×50 binoculars →