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Missing parts ? re Tasco 302048

Has tasco 15X erecting eyepiece with Sr 4mm end piece... cant focus..the eyepiece end is threaded on inside..only 1 lens is in it at viewing end... is one missing???

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Probably -- the 4mm gives too much magnification for you telescope-- difficult to focus or find thing in the sky-- you should also have had an eyepiece somewhere between 17mm and 24mm for lower power viewing.

Posted on Jan 11, 2009

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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 Telescopes

1 Answer

Tasco 40-114675 - new telescope. I am lost. my first telescope and the directions are useless. I don't know the first thing about them. how are the lenses supposed to go? do I use the barlow all the...


DO NOT USE the barlow at all your scope is too small to get that much magnification.

Put the eyepiece with the largest number written on it into the focuser and point it at a distant object during the day time. Practice focusing. The moon should be your first target at night.

Read my tips on my profile page.

Dec 26, 2010 | Tasco Luminova 40114675 (675 x 114mm)...

1 Answer

Télescope tasco 302048 y want the guide for


All of Tasco's manuals are on this web site:

http://www.tasco.com/pages/instruction-manuals/

Nov 28, 2010 | Tasco Telescopes

1 Answer

Wont focus correctly


TOO MUCH magnification. Put the eyepiece with the largest number written on it into the telescope. DO NOT USE the 2x barlow. Try Jupiter with lower magnification.

Oct 05, 2009 | Telescopes

2 Answers

Just came into a used tasco 302048 . Everything is upside down!!!


the scope is made for both terrestrial viewing and astronomical. In order to see terrestrially upright, you need an inverting STAR DIAGONAL. The eyepiece will do nothing for inverting the image. you might have 2 diagonals in the kit that came wih the scope. the diagonal is the part that fits into the scope. then you place the eyepiece in the diagonal. if you have 2 diagonals , one is a 90 degree angle,(astronomical) and one is a 45 degree angle, (terrestrial). the eyepieces change the magnification of the image. the bigger the number (9mm, 20mm, 26mm,) the smaller the image. the smaller the number , the bigger the image gets. the number is inverse of the image. Hope this helps.

Jul 01, 2009 | Tasco Luminova 40060660 (660 x 60mm)...

1 Answer

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

Jun 13, 2009 | Tasco Galaxsee 46114375 (375 x 114mm)...

1 Answer

Hi I have a Tasco 302045 the eye piece lenses are loose I suspect one is missing and or assembled wrong where can I get a diagram of how the lenses are arranged in the correct order. Also where to get...


You will not be able to get parts from Tasco-- however many things can be repaired with parts from a well stocked hardware store.

Rather than trying to fix a broken eyepiece look at this web site from some low cost plossel style eyepieces -- not very expensive. You need a 20mm and a 12 mm.

Apr 20, 2009 | Tasco Telescopes

2 Answers

Missing part


this can be obtained by calling bushnell customer service at 1-800-423-3537. additional a parts order form can be found at www.bushnell.com under customer service parts information.

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Tasco 57T Telescope


Loosen the set screw and it pulls off.

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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.

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