are dobsonian telescopes good for astrophotography?
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You can do Astrophotography of Moon and planets. That's the best we can do using dobsonian telescopes. Astrophotography of deep sky objects require long exposures, which is not possible by dobsonian telescopes. To do planet astrophotography you can use DSLR or CCD Camera.
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Optical telescopes make use of either lenses or mirrors to focus the incoming optical light waves. A refracting telescope uses lenses. Because big lenses are expensive and difficult to build and then support as part of a telescope, the refractor design is not commonly used for large telescopes today.
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A combination of concave and convex mirrors and lenses is used to collect a larger area of light and focus it onto a smaller, possibly brighter image surface. Concave mirrors in particular would be used in the collection and focus of the initial light received.
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From Earth, astronomers have studied Saturn with telescopes for centuries. And the Hubble Space Telescope continues to uncover new details from its perch in Earth orbit.
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X-ray and gamma ray telescopes detect very short wavelength of light and look at the sun, stars and supernovas. Reflecting telescopes see visible light and they see things way out in space. Refracting telescopes detect visible light; they see things out in space but not as far as reflecting telescopes.
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Such telescopes can gather more light, since larger mirrors than lenses can be constructed. A telescope can also be made with a concave mirror as its first element or objective, since a concave mirror acts like a convex lens as seen in Figure 3.
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The TMT telescope will provide extremely sharp images that will allow astronomers to see much fainter and more distant objects than possible with existing telescopes, and to study them in greater detail. ... It is very likely that TMT will enable discoveries that we cannot even begin to anticipate today.
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Astrophotography is photography of astronomical objects, celestial events, and areas of the night sky. The first photograph of an astronomical object (the Moon) was taken in 1840, but it was not until the late 19th century that advances in technology allowed for detailed stellar photography.
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Reflecting telescopes use mirrors to gather the light. Refracting telescopes use lenses. There are different kinds of reflectors, but in general the refractors all follow the same basic design.
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Binoculars and Field Glasses, Field glasses and binoculars are double telescopes that are small enough to be held in the hand. They magnify distant objects so that they can be seen more clearly. ... Field glasses usually enlarge an image no more than five times (5×) the size it appears to the unaided eye.
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The iPhone 11 Pro can take a 30-second exposure and while it doesn't have a dedicated astrophotography mode, it does a fairly good job of capturing the stars in the sky. Taken with a 30-second exposure on a tripod.
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The Konus Emperor binoculars are a very good binocular and good value for money. The 8x42 and 10x50 versions give a brighter image than the 10x42 and 12x50 versions. Their Titanium model also gives a good quality sharp image too.
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A star diagonal, erecting lens or diagonal mirror is an angled mirror or prism used in telescopes that allows viewing from a direction that is perpendicular to the usual eyepiece axis. It allows more convenient and comfortable viewing when the telescope is pointed at, or near the zenith (i.e. directly overhead).
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But what will serve you just as well is a good pair of binoculars for astronomy. Binoculars bring the stars a bit closer to your eyes, with a larger field of view that makes the heavens a bit easier to understand. And even a good pair of binoculars will generally be cheaper than a new telescope.
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The Refracting Telescope or Refractor uses a lens or lenses as the telescope's Primary Objective. Binoculars are a type of Refractor; occasionally you will find reflecting binoculars.
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List of optical telescope types. Optical telescopes can be classified by three primary optical designs (refractor, reflector, or catadioptric), by sub-designs of these types, by how they are constructed, or by the task they perform.
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The one recurring strong point of the 3X Terra scope that's repeated over and over again by Zeiss fans is the glass quality. While you can only expect so much performance out of glass at around $300, Zeiss doesn't disappoint. The clarity, color resolution, brightness, and contrast is outstanding for its price range.