Question about Celestron NexStar 80GT (189 x 80mm) Telescope

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Telescope not self aligning by aligning to 3 objects

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Please be absolutley sure that the mount is orthanogol (Level in all Directions ) to the plane of the instrument

Posted on Jun 15, 2009

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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)...

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How do i set up eye pieces and focus lenses?? Instruction manual came in chinese with no translation and we are begiiners!


During the day:
1. Point to a far (1000 meters or more) object
2. Insert the lowest power (highest number) eyepiece e.g. 25mm
3. focus on the object.
4. Align finder to match what you see in the scope.
At night.
1. Put scope out and let it reach the temperature of the outside.
2. Point finder to the moon (1st object you should always use to check scope and finder alignment)
3. Use the same low power eyepiece.
4. If everything seems fine, switch to a higher power eyepiece and enjoy the view. You may have to slightly adjust the finder to align with the main scope.
If the views are blurry, the telescope may be out of collimation. Look on the internet for generic collimation instructions.
If this still did not help. Throw the scope out! Its probably a piece of junk and will only discourage you.

Dec 12, 2012 | Optics

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I have a C8-SGT (XLT) Computerized Telescope, just brought it out first time this year. It is not tracking after I slew to an object. I've checked and rechecked the hand control settings. Any...


Hi,
I assume you mean you have set tracking on by:
Setup key, scroll to Set Tracking, select Sidereal Rate, press Enter

This should get tracking going for celestial objects.

Another possibility, if the mount is not tracking well, is that polar alignment is not very precise. This will immediately show up when doing a 3-star alignment.

Cheers

Nov 07, 2011 | Celestron CG-5 Mount Telescope

1 Answer

We have a bushnell 78-8831 telescope, after assembly we still cannot view any images.


1. use the lowest power eyepiece (highest number in mm)
2. Point the scope towards a object (about 1000yds) away during the day and see if you can focus on the object. If you can not see anything during the day there is a problem either with the scope or set-up
3. Align the finder to the daylight object so it is ready for night viewing.
4. First night object should be the moon. Easy to find. ( A full moon presents poor seeing but this is just to get used to the scope.
5. Once the above steps are completed, use a good star program to find interesting objects (Stellarium, Cartes du Soliel, C2A are all freeware)
6. If you can not see the daytime object, remove the eyepiece and look down the focus tube. You should see a reflection of your eye in the primary mirror. If not, the primary and/or secondary mirror need to be collimated (aligned) refer to your owners manual.

Jul 12, 2011 | Bushnell NorthStar 78-8831 (525 x 76mm)...

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Hi ive got a galaxsee tasco telescope but im having trouble seeing anything at night, i've took all the caps off lined up on a star but its just pitch black can you help thanks.


1. During the day, point the scope towards an object and align the finder scope to the telescope.
2. First object at night should be the moon. it will verify your finderscope alignment and you should have a clear view of the moon.
3. Use your lowest power eyepiece (largest number in mm) and point the finderscope to a star. The star should be in the center of the eyepiece.. If not, adjust the finder until it and the scope are centered.
4. You can use your higher power lens on the star nd it should still be in the FOV (field of view)
5. Scope may need to be aligned (collimated). Instructions on this should be included with the scope

Mar 10, 2011 | Tasco Galaxsee 46114375 (375 x 114mm)...

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Just bought a Bushnell telescope 78-4501 - set it up as per the instructions. I can see objects light etc... through the object finder or view finder but I see nothing through the telescope not even...


This is not a real telescope, it is a toy. You will be lucky to see anything with the 20mm lens only. the rest are junk. The telescope needs to be collimated (see your manual) and the finder aligned with the telescope. Align the finder with the scope during the day, although this model was known for poor mounting on the finderscope and will become un-aligned easily.

Oct 17, 2010 | Bushnell Optics

2 Answers

Recently acquired a used Meade 8" LX200 EMC. The unit presents very well cared for by previous owner. Upon receiving it, I followed the manual's instructions in assembly and then operation. Upon turning...


I have a LX200 EMC 10". I had a similar software problem and solved it by downloading AstroFinder, bypassed the onboard software of the telescope, and controlled the telescope via my laptop. This was a more user frriendly method and allowed easy alignment of the telescope.

Apr 21, 2010 | Optics

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Alignment problems


I'm not sure of which telescope and finder you have but I can give you some general instructions.

If your finder scope is is the type that is like a tiny telescope then you should see a set of cross hairs when you look into it. The goal is so that when the object is in the center of the cross hairs you should be able to find it in your telescope eyepiece.. To do this you need to align the finder scope,

I usually use a terrestrial object to do this. I use these because they don't move like stars do. You can choose road sign, a spot on a tree or a street light though that can disturb your night vision. Aim your finder at this object and center it in the finder. Check to see if it is in the eyepiece of your telescope. Use a low power eyepiece to give you a wider field. The low power eyepieces have higher numbers such as 25mm. If the object is not in your eyepiece find it and center it. Check your finder again. You need to adjust the finder so that the object is in the center of the cross hairs.

There are usually 1 to 3 thumb screws to adjust this. If there a three you go back and forth until it is centered. Check your eyepiece again to make sure the scope is still centered. You can use a higher power eyepiece (lower number) to refine this since it displays a narrower field. Just repeat the process.

Once this is done, you find the object in the sky in your finder and center it and it should be there in your eyepiece.

Clear skies!

-jodair

Mar 20, 2009 | Optics

1 Answer

Set up


The finder scope may not be aligned properly with the mn telescope. In the daytime, try setting the main scope on a distant object such as a steeple or chimney in the distance then align the finder scope to point to the same object. Then at night, look at the some bright star or planet and fine-tune the finder scope's adjustment screws so the images are aligned between the two scopes.

Jan 24, 2009 | Celestron NexStar 8i (600 x 203mm)...

1 Answer

Setting up my reflector telescope(beginner)


During the daytime focus the telescope on a distant object-- center the object in the eyepiece. Without moving the telescope adjust the finder scope by loosening and tightening the set-crews until the crosshairs are centered on the same object in the telescope eyepiece.

Dec 28, 2008 | Optics

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