Guide :Optics : Sky Tour Telescope

Lens came off-where do springs go?

I received a Bushnell Voyager with Sky Tour and my grandson unscrewed the end with the mirror and the springs came out. We have all the pieces, but don't know how the springs go. Also, I am new at telescopes and don't understand how to start. You are supposed to use a compass and set it with the Azimuth??? All I see is either white or my own eyeball. Any assistance is greatly appreciated. I have not even been able to use my new gift yet and am ready to cry! Donna

Research, Knowledge and Information :

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How do I fix my disconnected lens? ... the outer ring came off. ... p.s. the springs on this model are different than what I saw on the article about the A1000.
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Suggested Questions And Answer :

Lens came off-where do springs go?

There are a bunch of Sky Tour telescopes --- model you actually have??I am assuming you have what is called a Dobsonian mounted reflector like this one: that correct?
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Hey guys! My brothers chipped in to get me a telescope for my birthday. It's a celestron sky prodigy 70. I took it out a few times with zero experience except for what I picked up from reading the owner manual. Please excuse my language as I do not know any common terminology nor am I very good at trig but I at least know the terms relating to math( if thats what it really is talking about). So, when I look through the lens I get a nice sharp and crisp image with the factory provided lens. I know this is an entry level telescope but I want more magnification. So I bought an x-cel lx 2x Barlow lens and a 24mm-8mm zoom lens. I know the max magnification is 165x and the focal length is 700 so that puts my strongest eye piece at a little over 4mm meaning a 5mm is pretty much what I'll get out of it. I tried the Barlow and the zoom lens a smidge over 8 (9 I hope it was at) and the image is very soft. Then again I am in Los Angeles and looking out of my window through a fairly heavy marine layer. But the image comes out sharp if I use my factory lens, or just the zoom, or my already provided 24mm with the Barlow or the zoom at a lower magnification with the Barlow. My provided 9mm with the Barlow produces a blurred image and I tried to focus but it still seems blurry at best. I think I'm safe to say a 9mm on a 2x Barlow is still within the max effective range of zoom? I'm wondering if I shouldn't expect much out of the telescope or if I should return either the Barlow or the zoom lens or both and get some higher quality object specific lens instead. Or maybe I'm not focusing correctly? Or a zoom should not be used on a Barlow? Any insight would be very helpful.

Hi, I can see you'r statring a interesting journey in amateur astronomy. Which can be really amazing but also disappointing, because usually people are expecting too much (specially after viewing beautiful astronomy pictures on internet).Before we go back to your question lets go over some basics here:Your telescope has a F10 aperture (Focal lenght / Diameter).So to be able to see the maximum amount of details from it, the smallest eyepiece you need is a 10mm (eyepiece mm = to f number of thetelescope).Then it's easy to find the maximum useful magnification: 700mm (focal lenght) / 10mm (eyepiece) = 70x Ok but why does the manufacturer say that it can be at a max of 170x... they are not really lying, if you get a smaller eyepiece it will make the image bigger but will show no additional details than a 10mm one. But the image being bigger it can make details easier to see.That for the questions about magnification an image quality.The more pieces you put between you eye and the telescope mirror, the dimmer and less contrasty the image will be. Especially after you go higher that the maximum useful magnification.Hope this helps. And enjoy wathching the stars and planets, it is a always a beautiful sight.
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National Geographic NG70CA Telescope .... help with

Your small telescope will never get beyond about 100 power --- the maximum resolution is calculated as 50 times aperture under perfect conditions!Use the eyepieces with the LARGEST numbers only and don't use the barlow.
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I am a beginner looking for a good telescope. I am currently looking at a Celestron Skywatcher telescope. There are three lenses which comes with it: super wide 10mm. lens as well as a wide angle 25 mm. long eye relief lens,and a barlow lens. My question to you is, is this a good telescope for viewing objects in the sky, such as mars, moon, jupiter etc. Or do I need another lens stronger then that. I would like you to also give me an answer as soon as possible please! THANKS FOR YOUR HELP

Magnification is the LEAST important property of a telescope. Quality optics and aperture are much more important.The best bang for the buck is a reflector style telescope ion a Dobsionian mount. You get the most aperture for the least amount of money. Like this one-- scope above has 6 inches of aperture and is mounted on a very stable alt az mount called a Dobsonian
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Wrong Date on Sky Tour

It does NOT keep time! You enter the time AFTER you turn it on.
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What lens do i insert into scope to view the moon

The moon is big so use the 25mm. The Barlow will have a multiplication marking on it 2x 3x etc. A 2x Barlow lens will effectively double the power of the eyepiece you are using. Do not use the erecting eyepiece for anything other than land viewing. Erecting eyepieces generally reduce the amount of light reaching your eye and thus reduce brightness of the faint objects in the sky.So basically just place the 25 mm lens in the focuser and point the scope at the moon and you will be amazed at what you can see and how bright it is.
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I can target moon or planet in view finder and see same using just the 45 degree mirror;but, when I put in lens the object of course is blurred.My question is...How do you focus???...I had a telescope previously and you had a knob to turn on lens to focus...Lens that came with scope had none and additional barlow 2x is same type lens I know to add...But can't figure out how to focus...Please help....David

The knob on the back of the tube is the focuser-- put in the eyepiece with the largest number written on it and try again.It's harder to focus at HIGH magnification the sweet spot is very tiny.Go here and download a manual:
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Bushnell 700x76 I recieved this telescope as a Christmas gift 700x76 I cannot get a clear image thru it,I've used the 12.5mm lens the highest power lens it came with ,still can't see anything.What am I doing wrong?Please Help

Just got a 78-8831 and set it up according to instructions. After inserting lens into eyepiece, I can't see anything at all. Dont worry, I've removed the front cap from the the main telescope.Something leads to believe I'm either missing something real fundamental or my telescope is broken. Please help
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I think there is a piece missing - Bushnell Voyager Sky Tour Telescope

YOU THINK? and what piece do you "think" you are missing. How can we answer an incomplete question, with no description of the problem.
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Set up a Jason 307 Explorer Telescope?

Jason and Bushnell are the same company. Here is a list of the manuals. Find your telescope- down the web page.
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