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I need an eyepiece for a tasco 851tr 900x60 mm telescope and a spotting scope for the side with a mount. Can you help me?

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Posted on Jan 02, 2017

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SOURCE: what lens do i insert into scope to view the moon

The moon is big so use the 25mm. The Barlow will have a multiplication marking on it 2x 3x etc. A 2x Barlow lens will effectively double the power of the eyepiece you are using. Do not use the erecting eyepiece for anything other than land viewing. Erecting eyepieces generally reduce the amount of light reaching your eye and thus reduce brightness of the faint objects in the sky.
So basically just place the 25 mm lens in the focuser and point the scope at the moon and you will be amazed at what you can see and how bright it is.

Posted on Jan 02, 2008

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SOURCE: missing finder scope

This will do just fine--

http://www.telescope.com/control/product/~category_id=finder_scopes/~pcategory=accessories/~product_id=07228

Posted on Dec 27, 2008

SOURCE: Tasco 40-076420 for terrestrial viewing

All astronomical telescopes show upside down images-- no up or down in space!

You can buy one of these to ERECT the image-- make sure you get the correct barrel size usually 1.25 inch although some of those TASCO scopes are .965 inch. Measure the hole--
http://www.amazon.com/Orion-Correct-Image-Diagonal-1-25/dp/B0000XMYEW

Posted on Jun 18, 2009

SOURCE: I just purchased a Astrolon 60 mm edu-science

No -- you cannot buy parts for that telescope--- it's a toy scope. Hope you did not pay more than $2.00 for it.

Posted on Jun 22, 2009

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  • 3 Answers

SOURCE: help i have know idea

If you are still having problems give me a call on 01588 620717

Posted on Feb 08, 2010

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About my tasco 46-060675 D=60mm F=900mm come with 3 eye lense 1(sr4mm) 2 (k10MM) 3(k25MM) and two tube 1(1.5x erecting eyepiece) 2 (3xbarlow lense


The different eyepieces are to give different magnifications. This is worked out by dividing the focal length of the telescope, f = 900, by that of the EP. So the 25 mm Kellner (that is the type of optics in the EP) will give 900 / 25 = 36 times magnification.

The erecting eyepiece is used for terrestrial viewing. Normally with an astro telescope everything is upside down as that does not matter when looking at a star. So when you want to look through someone's bedroom window you use this.

A Barlow lens is an add-on magnifier. If you add this onto any EP (it normally fits between the EP and the scope) it will increase magnification x 3.

There is a practical limit to what any scope will deliver, governed by its aperture (the size of the front lens) and for your scope this will be about x 120 magnification. Beyond that the image becomes too dim and fuzzy. This means that your 4 mm eyepiece ( x 225 magnification) won't be much use. It will be hard to find the object you are trying to observe, it will be hard to focus, and the image will wobble around. Nor is your barlow lens much use either I fear.

You might consider another eyepiece around 18 mm to give a nice spread. A Plossl type is good. If you get serious about astronomy, I think you will immediately want a better scope after using the Tasco.

Mar 23, 2015 | Tasco Optics

1 Answer

I have a tasco 114mm by 900 luminova when i look through it all i see is around white circle what am i doing wrong


You are NOT focused properly. Take the scope out side during the day time and practice focusing on a distant object. Put the eyepiece with the largest number written on it into the focuser.

By the way in the picture shown on your post-- FIXYA has the scope mounted BACKWARDS and pointed at the ground. The focuser and small finder scope are on the UP end of the telescope.

Apr 15, 2011 | Tasco Luminova 40114675 (675 x 114mm)...

1 Answer

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)...

1 Answer

I need the eyepiece for the vivitar refractor telescope ot accidently was broking when I shipped to the Bahamas


You don't say whether this is an astronomical telescope or a terrestrial one (spotting scope). However, I have a Vivitar scope which was sold as an astronomical scope, but is actually a spotting scope, although it uses astronomical style eyepieces, so...

I am not sure that it is the eyepiece you want, either. It is hard to break an eyepiece, but much easier to break the eyepiece mount or diagonal mirror fitting.

Most astronomical telescopes use a standard fitting eyepiece with a 1.25 inch outside diameter barrel. You can measure the mount where the eyepiece goes to make sure that yours is this size, then search on eBay or Amazon for "1.25 eyepiece" and you will find many available. It doesn't have to be made by Vivitar, any make will fit.

The other variable will be the focal length of the eyepiece, which is what determines it's power. The power of the scope will be the focal length of the main objective divided by the focal length of the eyepiece, so a 9mm eyepiece will give a higher magnification (and be dimmer and harder to focus and find objects) than a 20mm eyepiece. It is usual to have two or three different focal length eyepieces for viewing different objects.

Jan 23, 2011 | Vivitar (1607225) Telescope

1 Answer

I recently purchased a Tasco Starguide telescope. Aparently the eye piece it came with does not even belong to the telescope. Will the eye piece to this particular telescope even be available for...


Telescope eyepieces are interchangeable. Most scopes come with two or three, of different focal lengths (to give different magnifications), and enthusiasts frequently buy others, either to get a wider range of focal lengths or to get better quality.

I do not know what you mean by "does not even belong to the telescope". Most eyepieces are a standard size, with a barrel of 1.25 inches outside diameter. If your eyepiece mount is that size, you can use any make of eyepiece that fits. The Tasco brand name is not associated with high quality eyepieces, so if the one you have is another make then that is not a problem in itself.

You can find many eyepieces for sale on Amazon or eBay by searching for "eyepiece 1.25". You may want to familiarise yourself with eyepiece issues by visiting THIS SITE, which has useful basic information.

Jan 19, 2011 | Tasco Starguide Computerized 80mm...

2 Answers

I'm looking for a manual for a Tasco 851TR telescope - any suggestions


Here is the support center for Tasco. Several manuals are listed on this page about 1/2 way down. Find one that is similar to your telescope. They all assemble and are used the same way.

Tasco only sells two types of telescopes a REFLECTOR and a REFRACTOR style telescope.

Jun 20, 2010 | Tasco Optics

1 Answer

Luminova 40114675 (675 x 114mm) Telescope: cant veiw anything out of it...


This is a REFLECTOR style telescope. The end with the focuser and the eyepiece is pointed UP. the mirror is on the bottom of the scope.

Take the scope outside during the daytime and practice focusing on a distant object using the eyepiece with the LARGEST number written on it.

The PICTURE shown above really makes me laugh. The scope is mounted BACKWARDS in the picture above, and is pointed toward the GROUND not the sky. Even FIXYA puts them on the mount backwards!

Look at this picture. See how the eyepiece and focuser are on the end pointed toward the sky. The MIRROR is the BOTTOM of the telescope:

https://www.highpointscientific.com/store/viewItem.asp?idProduct=385

I believe your scope is mounted backwards just like the picture FIXYA applied to your question!

May 05, 2010 | Tasco Luminova 40114675 (675 x 114mm)...

2 Answers

Trying to identify older tasco telescope and put it together


There are only two types of telescopes --- REFRACTORS, and REFLECTORS-

The refractor has a lens on the front of the tube and you insert different eyepieces in the back-- the larger the number written on the eyepiece the LOWER the magnification-- (DO NOT USE THE 2x or 3x barlow which you may have!-- this creates too much power for this small telescope!-- put it away and never use it!)

A reflector has a main mirror on the bottom of the tube, and a small secondary mirror under the eyepiece hole (focuser end) - front end-- put the lowest power eyepiece into the focuser.

Now with either type telescope go out side during the day and practice focusing on a distant object-- turn the knob SLOWLY. At night the moon should be the first target you try.

If you received what appears to be a smaller telescope -- that is the finder scope-- attach it to the top of the tube on the main telescope. Again during the day line up the small finder scope with the main scope-- look at a distant telephone pole (the very top-- and center this in the main telescope. Without moving the main scope use the finder scopes "screws" to adjust the cross hairs so they are pointing exactly where the main scope is pointed. Now you can use the small finder scope to point the telescope in the exact direction--

The moon should be your first night time target.

Good luck--

Mar 17, 2009 | Tasco Astronomical 302675 Telescope

1 Answer

What lens do i insert into scope to view the moon


The moon is big so use the 25mm. The Barlow will have a multiplication marking on it 2x 3x etc. A 2x Barlow lens will effectively double the power of the eyepiece you are using. Do not use the erecting eyepiece for anything other than land viewing. Erecting eyepieces generally reduce the amount of light reaching your eye and thus reduce brightness of the faint objects in the sky.
So basically just place the 25 mm lens in the focuser and point the scope at the moon and you will be amazed at what you can see and how bright it is.

Dec 30, 2007 | Tasco 350x50mm Refractor Novice Telescopes

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