What is the real definition of telescope binoculars?
Jasmine asked:
I have heard about different binoculars with different lens sizes. What is the real deal?
Reply:
I am not familiar with the term "telescope binoculars." However, you can certainly find binocular sets that range from opera glasses to giant instruments that should be mounted on a pier.
You may be referring to binocular eyepiece adapters. These are prism sets that can be installed like a normal eyepiece in any telescope of a sufficient size to support them. They provide binocular eyepiece locations, instead of the normal single eyepiece. This allows the observer to see the target with both eyes instead of one. It does provide a certain illusion of depth perception, and it is perhaps a little easier on the eyes in terms of fatigue.
Of course, it gets expensive buying two eyepieces of each focal length instead of one. And the accessory is sort of heavy and bulky, so it's not built for small scopes. I have experienced them in an 18 inch Dob, and it was a nice view. Not sure it's worth the expense / trouble, but nice.
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Tagged with: Telescope Binoculars
No. What you need to do is compare the surface area of the two systems using pi r squared. You can eliminate pi because it's a constant. so you've got 200 squared (= 40000) for the telescope with binoviewer compared to 2 x (100 squared) (= 20000), so the telescope will gather twice as much light as the binoculars, as well as having twice the resolution. The only down side with a binoviewer is the light loss due to the prisms.
did u make the scope or is it just sum telescope or binoculars??? if u m… (YouTube
I’ll try and remember these tips when my computerized Orion XT8 comes in the main in a couple more days!
Those are nice telescopes.. thanks for the video.. you have helped me understand more about dobsonians!! thanks
Saw an ad 4 binoculars. Call now & I get spyscope free – pen sized telescope. Ad shows I can view a deer from afar or read medicine bottle.
No, but I have accidentally looked at stars when trying to spy on my neighbours.
It sure can. I live in an area that reaches temperatures just as you described (Northwest Territories, Canada) and telescopes work just fine. Actually, cold winter skies are typically clearer since there is less humidity. There are a few words of warning I should give, though. As you can imagine one of the toughest parts is keeping your hands warm. You need to find gloves that are thick, but not so thick that you are unable to work the equipment, else you'll be taking your gloves off every 10 seconds.
Also, especially if you are using a refractor, make sure your scope has PLENTY of time to cool down to the temperature of the environment it is in! Refractors suffer from this especially because the lenses are sealed in a tube and the air inside does not change temperature as quickly as, say, a Newtonian or a Dobsonian which is open to the air. Even with Newtonian and Dobsonians, however, you want to make sure your mirror has had enough time to cool. Consequently, one of the best places to keep the actual tube assembly of your telescope and eyepieces when not in use is in a shed that is protected from the elements, but not heated. Then you won't have to wait for your scope to cool down. And, lastly, as with observing in any temperature or locale, try to do it on a night when it is not windy. Not only does it make for more comfortable observing, but you'll find the atmosphere is usually a little more cooperative (less flickering and atmospheric interference).
Hope this helps. Enjoy observing, and try to keep warm.
get your coats on,wrap up snug, get out the binoculars or telescope and go do some star/planet/moon viewing-it's stunning out there tonight!
Cool! I needed these tips!! Staring at blurry black is getting boring now
need to focus in on something! Thanks, Sarah 
Cool! I needed these tips!! Staring at blurry black is getting boring now
need to focus in on something! Thanks, Sarah 
Carl Zeiss is the best
You can choose and buy them at
Most of them are on sale now.
Good luck!
You should choose binoculars
Cool! I needed these tips!! Staring at blurry black is getting boring now
need to focus in on something! Thanks, Sarah 
Cool! I needed these tips!! Staring at blurry black is getting boring now
need to focus in on something! Thanks, Sarah 
if they didnt people would just use a toilet roll instead