Question about Celestron NexStar 4 SE Telescope

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Focus? I recieved a Nexstar 8 SE as a gift. I can't even focus the moon. I need advice for fix or return to manufacturer. Appreciate any help, thanks.

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The C8 optical tube has a very large focal range. It should be capable of focusing on objects from 15' to infinity. To focus on object at infinity you have to move the primary mirror foward. You do this by rotating the focus knob CCW. Rotate the knob CCW until it comes toa stop them slowly bring the mirror back by rotating the knob CW while viewing the object. It will snap to focus so don't move too fast yor you'll miss it.

Posted on Jun 27, 2008

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I cannot see anything through the lens of my brand new 6 SE. What should I do?


During the day, point the telescope at a part of the landscape about 100 yards away. Use the lowest power eyepiece (highest number) in the focal tube. Center the landscape object in the telescope. Align the finder scope so that it points exactly where the main telescope is. At night, leave the scope out to reach thermal equilibrium (about an hour). Point the finder at the moon. The moon should be in the main scope also. Practice finding the moon before you start on the planets Once you are comfortable with the moon and planets, you can go for the deep sky objects

Dec 28, 2012 | Celestron NexStar 6 SE (354 x 55.88mm)...

1 Answer

Nexstar 6 can not focus on moon. seems like focus knob does not move counterclock wise enough


The focuser may be broken. Contact Celestron for repairs here:

http://www.celestron.com/c3/page.php?PageID=37

Jan 17, 2011 | Celestron NexStar 6 SE (354 x 55.88mm)...

1 Answer

Hi, a few days back I purchased Nexstar 4SE. I set it up exactly how it says in the manual still I cannot see any magnifying views from the eye piece. While aligning the telescope I can find the moon from...


Stars will always appear as points. It is not possible to magnify them enough to see them as disks because they are all extremely far away. A telescope will however show you stars and other objects that are too dim to see with the naked eye.

You will be able to see the planets as disks, and even features on the planets, such as the bands on Jupiter, the rings of Saturn and the phases of Venus, and also moons around some planets. There are other objects that will show more detail when magnified, such as nebula. You will be able to see a lot of craters and other detail on the Moon.

Your problem is simply that you are not pointing the telescope at these objects. This seems to be one of those telescopes that "automatically" finds objects, but these so called "go to" scopes only do this when they are set up properly. I can't say what step(s) you have missed, but clearly even if the scope thinks it is pointed at the moon, if you can't see the moon, it is NOT pointed there. The Moon will fill the field of view even with the least powerful eyepiece. If you are seeing stars as points, then the eyepiece is focussed and working properly.

Jan 13, 2011 | Celestron NexStar 4 SE Telescope

1 Answer

I have a nexstar 6 SE and before my wife and I even used it once,some jealous idiot started playing with it in the extra room,and turned the manual focus adjustment knob so far in one direction that He...


Contact Celestron for replacement parts here:
http://www.celestron.com/c3/page.php?PageID=37

See if they have one.

You can also send it back to them for repair.

Nov 23, 2010 | Celestron NexStar 4 SE Telescope

2 Answers

Cant see ****


Cannot see anything in the daytime? We need more details.

Put the eyepiece with the largest number written on it into the focuser. Try focusing on a distant object during the day time.

You must follow the setup procedures in the manual for accurate GOTO function at night.

Nov 09, 2010 | Celestron NexStar 114GT (269 x 114mm)...

1 Answer

HI, Just purchased a nextstar 8 and when I tried to view thru the main eye-piece, nothing. Even tried to look at the full moon, nothing again. Yes, all the lens caps are off but it seems like the focas...


Check the focus knob and make sure the small "set-screw" is tight and the knob is just not spinning around on the shaft.

DID you turn the knob enough to focus? Sometimes it may take 10 - 20 full turns.

Finally the focuser is attached to a "rod" inside the tube that moves the mirror back and forth to focus the scope. It could have come loose from the rod?

Instructions for disassembly are here:
http://www.celestron.com/c3/support3/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=2220

and here:

http://www.sciencecenter.net/hutech/misc/focuslk/index.htm this just shows how it works.

Oct 24, 2010 | Celestron NexStar 8i (600 x 203mm)...

1 Answer

My NexStar 8 SE doesn't focus. When the focuser knob is rotated either direction it moves the image up or down.


The knob could have come loose from the mirror. This would require a return to Celestron for repair or a complete disassembly of the rear of the scope,

You can remove the focuser, and MAYBE it is just detached from the rod inside that moves the mirror back and forth.

Celestron support:

http://www.celestron.com/c3/page.php?PageID=37

Aug 01, 2010 | Celestron Telescopes

2 Answers

I have the Nexstar 8. It will not auto align or manual....


You must set TIME, DATE, and SITE-- probably does not know your actual location. Read the manual and perform all of the setup procedures.

Some of these have a "starting position" again read the manual and make sure you are in the "home" position before you start the alignment. Read my TIP on my profile page about GOTO telescopes, and join the NEXSTAR forum on www.cloudynights.com

Mar 27, 2010 | Celestron NexStar 102 SLT 102 mm (4.0)...

1 Answer

Start Align with NexStar 4SE


Did you enter the correct TIME, DATE, and LOCATION? and yes you may have aligned on to the wrong stars -- they need to be "near" the center.

Feb 04, 2009 | Celestron NexStar 4 SE Telescope

2 Answers

Cannot bring the moon into focus


leave your scope outside for a while so it can cool?

Jan 16, 2007 | Bushnell NorthStar 78-8890 (300 x 90mm)...

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