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General Photography
Photographing distant things
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<blockquote data-quote="Glassman" data-source="post: 39295" data-attributes="member: 4184"><p>Telescopes vary in design and that is a completely different topic, but they really are rather simple. A series of lenses and/or mirrors manipulate the light that enters the tube. The beauty of the Cassegrain design is that the mirrors allow for a large objective length in a shorter housing. </p><p></p><p>As for what one offers over a good spotter, that depends on what you are trying to accomplish. Generally speaking, a spotter will get one all they need. But for some aspect of astrophotography a spotting scope just wont cut it. A spotting scope would probably get one a good view of the moon, satellites, near earth comets and asteroids, and some planets. But when you are speaking of galaxies, nebulas, and distant planets a telescope is needed. In terms of terrestrial viewing a telescope is a very specific piece of kit used in very specific circumstances. But it does have a few uses. </p><p></p><p>I did notice that the vortex adapter threads on the lens of the camera and I'm not thrilled about it. Which has me considering a Nikon Fieldscope w/ED glass also. Either route puts me in roughly the same price range. But it is a trade off. The Vortex offers a tactical eye piece with a ranging reticle. Thus I can use it for my long range shooting also and the reticle matches the reticle and turrets on my scopes. But the camera adapter is not all that great. On the other hand, the Nikon unit offers a T-mount but no reticle.</p></blockquote><p></p>
[QUOTE="Glassman, post: 39295, member: 4184"] Telescopes vary in design and that is a completely different topic, but they really are rather simple. A series of lenses and/or mirrors manipulate the light that enters the tube. The beauty of the Cassegrain design is that the mirrors allow for a large objective length in a shorter housing. As for what one offers over a good spotter, that depends on what you are trying to accomplish. Generally speaking, a spotter will get one all they need. But for some aspect of astrophotography a spotting scope just wont cut it. A spotting scope would probably get one a good view of the moon, satellites, near earth comets and asteroids, and some planets. But when you are speaking of galaxies, nebulas, and distant planets a telescope is needed. In terms of terrestrial viewing a telescope is a very specific piece of kit used in very specific circumstances. But it does have a few uses. I did notice that the vortex adapter threads on the lens of the camera and I'm not thrilled about it. Which has me considering a Nikon Fieldscope w/ED glass also. Either route puts me in roughly the same price range. But it is a trade off. The Vortex offers a tactical eye piece with a ranging reticle. Thus I can use it for my long range shooting also and the reticle matches the reticle and turrets on my scopes. But the camera adapter is not all that great. On the other hand, the Nikon unit offers a T-mount but no reticle. [/QUOTE]
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