Question about Meade LXD75 SN6 (06057504) Telescope

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Focus problem I collimated my scope using a cheshire collimator and also a laser collimator but cannot achieve focus. I used a hartmann mask but could not get the three images to converge. They came close but just dance by each other as I passed what I assume to be the focus point. My scope is an LDX75 SN10, not 6" but I would believe they are the same design.

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SOURCE: I have a meade LX200GPS

Went to Speciality Fastners. They had similay threaded screws.

Posted on Apr 29, 2008

SOURCE: collimation screws on the Celestar C8

If you are going to replace them contact "Bob's Knobs" and order the replacement thumb screws. Makes collimation much easier, no Allen wrench needed.

Posted on Oct 01, 2009

SOURCE: Difficulty with Skywatcher pro 150 collimation.

Watch this video on collimation.

Posted on Oct 04, 2009

SOURCE: Collimation

Visit this web site and watch the video:

Posted on Nov 11, 2009

SOURCE: SkyQuest XT8 IntelliScope (48 x 203mm) Telescope: Can someone please help me to collimate my telesco...

Watch this video by Andy:

Posted on May 16, 2010

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SOURCE: I lent my Celestron 9.25

What kind of a friend does that to someones scope without asking etc???

Posted on Nov 04, 2011

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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 | Telescopes

1 Answer

I need to collimate my telescope, but the instructions don't seem clear to me. I'm supposed to see the reflection of my eye by looking into the focuser drawtube, but I don't. I can only see my...

Any member of any local Astronomy club can teach you how to collimate this scope. Contact your local club--

Meanwhile watch this video:

Jul 03, 2011 | Meade DS-2114 ATS (325 x 114mm) Telescope

1 Answer

Look through viewhole & see nothing. been told mirrors may need collimated (just recieved back from repair service for bad motor). How do I go about getting & using collimating eqpt

Collimation would NOT completely stop you from seeing something.

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.

Watch this video:

Feb 16, 2011 | Celestron NexStar 130GT (306 x 130mm)...

1 Answer

I can't get my Meade 10" Lightbridge telescope to focus in the eyepiece. I bought a Meade Laser Collimator and Collimated it last night outside before I tried to observe Jupiter and it still didn't...

Even if the scope is a little out of collimation it should still focus. Put the eyepiece with the largest number written on it into the focuser. DO NOT use a 2x barlow if you have one.

Try again--- you can do this during the day time on a distant object and practice turning the focus knob slowly left and or right until you get a sharp image.

The higher the magnification the smaller the "sweet spot" with the focuser.

Jan 13, 2011 | Meade LightBridge 10 in. Standard (600 x...

1 Answer

I used the collimation eyepiece to collimate my telescope.But I dont know if it's properly aligned. The knobs on the bottom of the tube are turned fully clockwise, and the black dot in the eyepiece is...

Before you do anything else, take the scope outside on a good night, find a semi- bright star (Polaris will do). Let the scope cool down! (about 45 minutes) use your highest power eyepiece and put the star in focus.
Now take the star out of focus (inner focus or outer focus) you should see a dark circle in the center with symmetrical rings around it (airy rings). If the dark circle is in the center and the airy rings are symmetrical, your telescope is collimated
Check both inner and outer focus, they should be close to the same. If not you should re-collimate.
Best done with fainter stars but for now stick to the brighter ones.
Because I own 3 scopes, I use a Hotech laser collimator. its quick and easy. Worth it if you travel with your scopes to dark sites

A good guide on how to collimate

Oct 16, 2010 | Celestron NexStar 130SLT (31145) (306 x...

1 Answer

I cannot sight anything even the moon

The likely hood is, that the scope needs collimating.
If you don't have a collimator, you can easily purchase one, online.
I discovered the same problem with my scope, until I collimated it.
There are many different types available, 'Red Dot' lasers, or just simply a pin hole in a eye piece fitment.
The 'catseye', is the one I got.
It may seem a little complicated at first, but after you have figured it all out works, it will become clear, and once you've collimated for the first time, it takes no time at all to re-collimate.
There ya go, fixedYa!
P.s, don't forget to give a good thumbs up thankyou :)

Jul 29, 2009 | Celestron PowerSeeker 114 EQ Telescope

4 Answers

It will not focus. I have used several eyepieces

It WILL focus -- put the eyepiece with the LARGEST number in it into the tube........... DO NOT USE the 2x or 3x Barlow.......... this eyepiece is the LOWEST magnification.

Take the scope outside during the day and practice focusing on a distant object at least 100 yards away. If you are expecting 650 power forget it-- you will only get about 120 power as the maximum usable magnification, with that aperture 80mm scope.

Jun 27, 2009 | Galileo 720mm x 80mm Refractor Telescope

1 Answer

Lost vision

Your telescope is a "Newtonian," as such it requires regular "collimation" Collimation the alignment of the optics. The mirrors must be lined up properly for the telescope to deliver a good image to the eyepiece. Your scope sound like it is way out of collimation. My guess is that the diagonal (secondary) mirror has rotated in it's mount. There are three basic tools for collimating a Newtonian the Sight Tube, Cheshire and Autocollimator. To get your digonal aligned correctly you need a sight tube. Rather than spend a lot on these consider making your own and keep an eye on eBay offerings. Don't bother investing in a laser collimator, they simply don't do the job unless you go for the very best. From some help with the collimation process check these links.
The 60 page pamphlet "New Perspectives on Newtonian Collimation," Fourth Edition by Vic Menard and Tippy D’Auria runs $10, but if you really want to do it right it's worth the money.
HTH, George

Feb 24, 2008 | Bushnell Deep Space 78-9518 (675 x 114mm)...

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