Questions tagged [binoculars]

For questions about the observation of the sky through binoculars.

4 questions with no upvoted or accepted answers
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Precise meaning of collimation/alignment of a binocular

My question is about what exactly is meant by a binocular being collimated/aligned. I'm familiar with optics in general, but not with the nitty gritty of binocular design. There are various resources ...
2
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Equipment question

I'm looking to get some optical equipment that will be used for both terrestrial and astronomical viewing (ratio 70/30). It will also have to be portable to a degree although I realise that with a ...
2
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Telescope optical tolerance from central axis

I sometimes encounter telescopes/binoculars with a decent objective diameter but are very difficult to use because they only work when the eye is looking down the central axis (i.e. in the centre of ...
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Why some stars appear to move differently when viewing device shakes

I was looking at Arcturus with a pair of binoculars, and noticed that when they vibrate due to my heartbeat, Arcturus seemed to move differently than the other dimmer stars. I started playing with ...