{"id":5076,"date":"2026-04-08T11:17:39","date_gmt":"2026-04-08T09:17:39","guid":{"rendered":"https:\/\/it2523.sspu-opava.eu\/?page_id=5076"},"modified":"2026-06-06T13:28:33","modified_gmt":"2026-06-06T11:28:33","slug":"about","status":"publish","type":"page","link":"https:\/\/it2523.sspu-opava.eu\/","title":{"rendered":"Home"},"content":{"rendered":"\t\t
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AstroVision<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Discover secrets of space<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Astrophotography<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Amateur astrophotographer documenting the cosmos from dark sites across Europe.\u00a0<\/p>

Thousands of hours of integration time spent chasing nebulae, galaxies, and the stories\u00a0<\/p>

written in starlight<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tStart Journey<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tMy journey<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Scroll\u2193<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/main>\n\t\t

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2000+<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Hours of Integration<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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2<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Years Observing<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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100+<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Dark Sky Sessions<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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20+<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Objects Captured<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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The Person Behind the Lens<\/h1>\t\t\t\t<\/div>\n\t\t
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I’m a\u00a0deep-sky astrophotographer<\/strong>\u00a0passionate about revealing the hidden structures of the universe through long-exposure imaging. What started as a childhood fascination with the stars grew into a technical obsession.<\/p>

This site is where I share my\u00a0images, processing techniques, gear reviews, and everything I’ve learned<\/strong>\u00a0about bringing the deep sky to life.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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Expertise<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\ud83d\udd39\u00a0<\/strong>Narrowband Imaging<\/p>

\ud83d\udd39<\/strong> Siril Processing<\/p>

\ud83d\udd39<\/strong> Ha\/OIII\/SII Palette<\/p>

\ud83d\udd39<\/strong> Gimp Finalization<\/p>

\ud83d\udd39<\/strong> Plate Solving & Astrometry<\/p>

\ud83d\udd39<\/strong> Guiding & PHD2<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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The Gallery<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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Selected images from years of dark–sky sessions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\"Messier\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t
<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Whirpool Galaxy<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\u00a0OSC \u00b7 180 min total \u00b7 Canes Venatici constellation \u00b7 March 2026<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Cigar Galaxy<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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OSC \u00b7 300 min total \u00b7 Ursa Major constellation \u00b7 Jan 2026<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Orion Nebula<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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OSC \u00b7 20min total \u00b7 Orion constellation \u00b7 Dec 2025<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Hercules Globular Cluster<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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OSC \u00b7 20min total \u00b7 Hercules constellation \u00b7 August 2024<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Dumbell Nebula (starless version)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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OSC \u00b7 30min total \u00b7 Vulpecula constellation \u00b7 August 2025<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Mineral Moon<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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OSC \u00b7 10000 frames \u00b7\u00a0 \u00a0March 2026<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Learn Astrophotography Processing<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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From Raw Frames to Final Image<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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A practical walkthrough of my full processing workflow \u2014 from calibration frames to colour grade. Also the most needed part of Astrophotography<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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01<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Calibration Frames<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Apply bias, dark, and flat frames to correct sensor noise, thermal signal, and optical vignetting.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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02<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Integration & Stacking<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Combine multiple exposures to improve signal-to-noise ratio and reveal faint image detail.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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03<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Background Neutralisation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Remove colour casts and normalise the background to achieve a neutral sky level.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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04<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Starless Processing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Separate stars from the image to allow\u00a0 enhancement of nebula or galaxy structures.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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05<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Colour Mapping & Grade<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Adjust colours to enhance balance tones, and improve overall image appearance.

<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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The Universe<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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What We\u00b4re Looking At<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Context for the cosmos – the science behind the objects I photograph<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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\ud83c\udf0c<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Emission Nebulae<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Clouds of ionised gas \u2014 primarily hydrogen \u2014 that glow when radiation from nearby hot stars excites electrons, causing them to emit light as they fall back to lower energy states. The red-pink glow of H-alpha at 656nm is what narrowband astrophotography is built on.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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H-alpha emission: 656.28nm wavelength<\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\ud83d\udcab<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Spiral Galaxies<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Disk-shaped collections of hundreds of billions of stars, gas, and dust rotating around a central bulge. Spiral arms trace regions of active star formation. The Andromeda Galaxy, 2.5 million light-years away, is the most distant object visible to the naked eye.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Andromeda approaches at 110 km\/s \u2014 collision in ~4.5Gyr<\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\ud83d\udca5<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Supernova Remnants<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The expanding shells of gas and dust ejected when a massive star explode at end-of-life. These structures disperse heavy elements into the interstellar medium \u2014 the iron in your blood was forged in a stellar explosion billions of years ago.“<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Crab Nebula expands at ~1,500 km\/s from 1054 AD supernova<\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\u2b50<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Stellar Evolution<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Stars are nuclear fusion reactors, converting hydrogen to helium and releasing enormous energy. Mass determines everything \u2014 low-mass stars end as white dwarfs, while high-mass stars detonate as supernovae. Our Sun has ~5 billion years remaining on the main sequence.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Solar luminosity: 3.828 \u00d7 10\u00b2\u2076 watts<\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\ud83c\udf20<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Emission Nebulae<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The observable universe extends 46 billion light-years in every direction \u2014 not because that’s its actual size, but because light from further away hasn’t had time to reach us yet. It contains an estimated 2 trillion galaxies. When you photograph a nebula 1,000 light-years away, you’re seeing light that left when the Normans were conquering England. When you photograph the Andromeda Galaxy, you see it as it was when Homo habilis first walked the savanna.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Observable universe diameter: ~93 billion light-years \u00b7 ~10\u2078\u2070 atoms estimated<\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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FAQ<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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Frequently asked questions by community<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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\ud83d\udcf7<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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What camera do I need for astrophotography?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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You can start with almost any camera that allows manual settings \u2014 even some smartphones. A DSLR or mirrorless camera with manual exposure control is ideal for beginners. Popular starter brands include Canon<\/span><\/span>, Sony<\/span><\/span>, and Nikon<\/span><\/span>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\ud83d\udd2d<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Do I need a telescope?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Not necessarily. For Milky Way or nightscape photography, a wide-angle lens and tripod are enough. A telescope becomes useful for detailed images of planets, nebulae, or galaxies.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\u2b50<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t

Why do my stars look blurry?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t
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Common causes include:<\/p>\n

    \n
  • Poor focus (manual focus on a bright star works best)<\/li>\n
  • Camera shake (use a tripod and timer\/remote shutter)<\/li>\n
  • Too long exposure causing star trails<\/li>\n
  • Atmospheric conditions like haze or turbulence<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
    \n\t\t
    \n\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t

    \ud83c\udf0c<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t\t

    Can you do astrophotography without expensive gear?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    Yes. Many beginners start with an entry-level camera, kit lens, and tripod. Learning technique often matters more than expensive equipment at the beginning.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

    \n\t\t
    \n\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t

    \ud83d\udd0d<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t\t

    How long does astrophotography take?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    A session can last anywhere from 30 minutes to several hours depending on your subject, weather, and setup.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

    AstroVision Discover secrets of space Astrophotography Amateur astrophotographer documenting the cosmos from dark sites across Europe.\u00a0 Thousands of hours of integration time spent chasing nebulae, galaxies, and the stories\u00a0 written in starlight Start Journey My journey Scroll\u2193 2000+ Hours of Integration 2 Years Observing 100+ Dark Sky Sessions 20+ Objects Captured The Person Behind the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":"","_wp_rev_ctl_limit":""},"class_list":["post-5076","page","type-page","status-publish","hentry"],"yoast_head":"\nHome - AstroVision<\/title>\n<meta name=\"description\" content=\"Astrovision \u2013 Explore the beauty of astrophotography, deep sky imaging, night sky photography, and astronomy through stunning celestial captures.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/it2523.sspu-opava.eu\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Home - 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