Small telescope with a front-mounted white-light solar filter
Bresser Solarix 76/350 AZ
Any small telescope with a certified solar film filter over the FRONT of the tube — sold as a kit with its filter in the box, or a small telescope plus a ready-made front cell sized to its tube. Shows sunspots, the granulation around them, faculae near the limb, and eclipses and transits. Daytime astronomy, which is the only kind some people's lives allow.
€102seen 7 Oct 2026 at Astroshop
- 76 mmAperture
- f/4.6Focal ratio
- 2 kgTypical weight
- 13–152×Useful magnification
Should you buy it?
- Yes if what you mainly want is sharing it with children, taking it with me: that is what this family does best.
- No if your priority is the moon and the planets, learn my way around the sky, 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)
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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 numbers
Photo: Astroshop| Aperture | 76 mm |
|---|---|
| Focal ratio | 350 mm · f/4.6 |
| Mount | Lightweight alt-az on an aluminium tripod; certified front solar filter included |
| Typical weight | 2 kg |
| Eyepieces | 20 mm and 4 mm |
| Useful magnification | 13× to 152× at 76 mm |
| Resolution (Dawes) | 1.5″ — the tightest double star this aperture can split |
| Faintest star, suburban sky | around magnitude 10.7 |
| Observed price | €102 seen 7 Oct 2026 at Astroshop |
Made for
- Sharing it with children
Daytime, warm, and a child can see the spots change over a week. Supervise the filter every single time.
- Taking it with me
Light, small, and the target is up wherever you are.
- The Sun
In white light: sunspots with their penumbra, faculae near the edge, and granulation on a steady morning. Dawes' limit on the Sun: 1.5″ (116 ÷ 76 mm, arithmetic). The maker's solar filter is in the box and made for this instrument: nothing to buy, nothing to measure. Every time: certified filter over the front · finder capped · never an eyepiece filter · an adult with children · never without the filter.
Not made for
- The Moon and the planets
The same small instrument works on the Moon at night with the filter off. The planets are marginal at this aperture.
- Learn my way around the sky
There is one object. It is not hard to find.
- Nebulae, clusters and galaxies, by eye
Nothing. This is a daytime instrument.
The Sun, safely
Solar filter in the box (read on the listing)
The Sun with this model
The maker's solar filter is in the box and made for this instrument: nothing to buy, nothing to measure.
In white light: sunspots with their penumbra, faculae near the edge, and granulation on a steady morning. Dawes' limit on the Sun: 1.5″ (116 ÷ 76 mm, arithmetic).
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.
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: Small telescope with a front-mounted white-light solar filter
What it does well
- Observing in daylight, at a civilised hour, without dark adaptation or cold
- Sunspots change day to day, so there is always something new to compare
- A certified front filter costs less than a single eyepiece and fits an instrument you may already own
What it costs you
- White light shows the photosphere only — no prominences, no flares, no red Sun. That is hydrogen-alpha, and it costs ten times more
- A cheap bundled tripod shakes, and the Sun is bright enough that the shake is very visible
- The filter MUST be front-mounted and certified. Anything that screws into an eyepiece is a way to lose an eye — see the safety notice
Worth knowing about this model
A small Newtonian sold as a solar kit: the front filter is in the box, which is the point. The tripod is the usual budget aluminium and the 4 mm eyepiece is mostly for the Barlow it comes with. Fine for the Sun and the Moon; not for anything fainter.
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€102seen 7 Oct 2026 at Astroshop
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