Question about Celestron NexStar 4 SE Telescope

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Mirrors When I look down into the mirrors I can see that a mirror has moved out of place and i'm not sure how to fix it or where to get it fixed.

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The primary mirror of the N4 is very securely held in place. The secondary is an aluminum coating on the back of the meniscus lens and can't move. I think what you are seeing is the secondary mirror's baffle tube becoming misaligned. This can happen if the scope is left in a hot automobile. Contact Celestron support for repair services.

Posted on Jun 27, 2008

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Posted on Jan 02, 2017

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1 Answer

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Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

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Ok,here's the deal.You'll need lots of patience. The mirror has two threaded stubs about 1-1.5 in. long that move inward and outward to move the mirror in or out. These two are about two to three inches apart.
1. So take these 'two stubs' out of the mirror housing and make sure you snap 'em into the back of the mirror plate (plastic plate) where the mirror is glued to.
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I suggest trying a different eyepiece first to see if that's the problem. Otherwise, if it was moved without adequate protection, there is a chance the mirror was shifted or damaged. A damaged mirror can't really be fixed since it's specs are very rigid. If it turns out to be a problem with the mirror the best thing to do is find an expert on telescope mirrors to try and fix the problem.

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