Question about Bushnell Deep Space 78-9518 (675 x 114mm) Telescope

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Seeing black during the day

I purchased a used Bushnell 78-4501 114mm reflector. I set it up per instructions, but when I look through the eyepiece I only see black. No light penetrates the lens not even when it is pointed at a light. All lens and dust caps are off.

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Here are the Bushnell manuals which may help you--

http://www.opticsplanet.net/bushnell-warranty.html

Posted on May 17, 2009

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Put the eyepiece with the largest number written on it into the focuser. DO NOT USE the 2x barlow if you have one. Take the scope outside during the day time and practice focusing on a distant object like a building or telephone pole.

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Can you focus during the day time on a distant object. If you can nothing is wrong with the scope. Objects in the night sky are tiny, smaller than the tip of your finger held at arms length.

Practice focusing during the day time, and read my TIPS on my profile page.

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Did you remove the lens cap.

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Practice focusing on a distant object during the day time. Read my TIPS on my profile page.

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Can't see anything through eyepiece.


The FOCUSER end should be pointed UP the mirror end is toward the ground. Turn the scope around and put the eyepiece with the largest number written on it into the telescope. DO NOT use the 2x barlow if you have one.

Go outside during the day time and practice focusing on a distant object.

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1 Answer

I can't see any thing it just show looks black


This is a reflector style telescope. Put the eyepiece with the largest number written on it into the FOCUSER, point this end UP, remove the dust cap, the large mirror should be down in the bottom.

Go outside during the day time and practice focusing on a distant object. Read my "TIPS" on my profile page.

Also watch this video:
http://www.andysshotglass.com/Collimating.html

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The end with the focuser is point UP, the big mirror is on the bottom. Remove the cap, put the eyepiece in that has the largest number written on it and practice focusing on a distant object during the daytime.

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Probably NOT actually pointed directly at the moon-- you should have moved it around a little -- the moon was probably just outside the field of view through the eyepiece. ........................ telescope must be pointed DIRECTLY at the sky object-- also use the eyepiece with the largest number written on it=== this gives the LOWEST magnification..... and a slightly wider field of view.

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You are not in focus--- during the day try to focus on a distant object at least 100 yards away-- using the lowest magnification eyepiece, this is the one with the largest number written on it. DO NOT use the barlow which multiplies the magnification by 2 times!

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