{"id":8970,"date":"2026-08-04T07:00:00","date_gmt":"2026-08-04T07:00:00","guid":{"rendered":"https:\/\/rdgundem.com\/this-sky-watcher-is-an-ideal-beginner-telescope-for-solar-observing\/"},"modified":"2026-08-04T14:21:02","modified_gmt":"2026-08-04T14:21:02","slug":"this-sky-watcher-is-an-ideal-beginner-telescope-for-solar-observing","status":"publish","type":"post","link":"https:\/\/rdgundem.com\/en\/this-sky-watcher-is-an-ideal-beginner-telescope-for-solar-observing\/","title":{"rendered":"This Sky-Watcher is an ideal beginner telescope for solar observing"},"content":{"rendered":"
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Specifications<\/div>\n
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Aperture:<\/strong> 3 inches \/ 76mm<\/p>\n

Focal length:<\/strong> 25-inches \/ 630mm<\/p>\n

Focal ratio:<\/strong> f\/8.3<\/p>\n

Optical design: <\/strong>Achromatic doublet dedicated H-alpha refractor<\/p>\n

Filter type: <\/strong>Hydrogen-alpha, 656.28nm (meets ISO 12312-2)<\/p>\n

Etalon:<\/strong> Sky-Watcher Solis etalon technology (<0.5 \u00c5 bandwidth)<\/p>\n

Blocking filter:<\/strong> 11.5mm blocking filter integrated into supplied diagonal<\/p>\n

Tuning system:<\/strong> Mechanical Trifid\/Triffid pressure tuner<\/p>\n

Focuser:<\/strong> 2-inch dual-speed Crayford focuser<\/p>\n

Finder:<\/strong> Integrated solar finder<\/p>\n

Eyepiece:<\/strong> 20mm 70-degree 1.25-inch eyepiece<\/p>\n

Mount:<\/strong> OTA supplied with tube rings and V-style dovetail<\/p>\n

Other accessories: <\/strong>smartphone adapter, sunshade, hard case.<\/p>\n

Weight:<\/strong> 8.4 lbs (3.81kg) tube<\/p>\n<\/div>\n<\/div>\n

With a total solar eclipse on Aug. 12<\/u><\/a>, an annular solar eclipse on Feb 6, 2027<\/u><\/a> and another total<\/u><\/a> solar eclipse on Aug. 2, 2027<\/u><\/a>, solar telescopes are about to be in hot demand. After all, why peer at the eclipsed sun when you can see it in close-up? However, the Sky-Watcher Heliostar 76mm offers something a little different to a telescope<\/u><\/a> wearing a solar filter \u2014 and it\u2019s just as good when there\u2019s no eclipse at all. Built around a standard, small-aperture refracting telescope, it has an H-alpha etalon (an ultra-narrowband filter used to observe the sun) and a diagonal blocking filter, which together let you safely see features in the sun<\/u><\/a>\u2019s chromosphere, a layer of its atmosphere above the surface (photosphere) and below its corona (outer atmosphere). It\u2019s a layer that\u2019s invisible in standard white light, but it glows in the very specific 656.28 nm wavelength of light, called hydrogen alpha (about 92% of all the atoms in the sun are hydrogen).<\/p>\n

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The H-alpha system reveals prominences, filaments and active regions. <\/span>(Image credit: Jamier Carter)<\/span><\/figcaption><\/figure>\n

Costing around US$3,395\/UK\u00a32,399, the Sky-Watcher Heliostar 76mm isn\u2019t specifically an eclipse telescope, being unable to show you anything of the precious but short totality phase, when the corona comes into view. Although it\u2019s a great way to get a unique look at the partial phases of a solar eclipse, it\u2019s actually best seen as a solar telescope fit for studying our star at any time. It can show incredible features such as prominences (which look red to the naked eye during totality), filaments, bright plage regions and even solar flares (if you\u2019re lucky with timing!), but can be used at any time of the day.<\/p>\n

Read: The best solar telescopes for an HD view of the solar surface<\/u><\/a><\/p>\n

Sky-Watcher Heliostar 76mm H-alpha solar telescope: Design <\/span><\/h3>\n
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\"Sideview<\/p>\n<\/div>\n<\/div>

The 630mm focal length gives a useful full-disk solar view. <\/span>(Image credit: Jamier Carter)<\/span><\/figcaption><\/figure>\n