Question about Tasco Optics

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I have an old Tasco Telescope #271808 with a Barlow Lens 2x magnification D=76.2mm f-1200mm and are looking for instructions on how to work it. If anyone could help that would be wonderful.

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This is a small refractor style telescope--- most iof them assemble exactly alike. Look through the Meade manual page for one that is similar to yours and download it for free.

http://www.meade.com/manuals/index.html

Yours is similar to this one--
http://www.meade.com/manuals/TelescopeManuals/Refractors/Meade70AZ_AR.pdf

Posted on Jun 18, 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 Optics

1 Answer

When i look through the telescope eyepiece everything is blurry.


This is a very small 60mm telescope not much bigger than a pair of 50mm binoculars, you are applying TOO much magnification. Use only the eyepiece with the largest number written on it and do not use the 2x barlow lens.

Sep 11, 2011 | Meade 60AZ-T Telescope

1 Answer

Ido not know how to assemble it. The instructions are generic for all their telescopes. Where do I out the different lens that came with it? How do I install them? Help please.


The lower the number on the eyepieces the HIGHER the magnification. The 2x barlow DOUBLES the magnification of each of the eyepieces. To start just put the eyepiece with the largest number written on it into the focuser, and use that ONLY until you learn how to focus properly.

The eyepieces fit right into the hole in the focuser.


www.telescopeman.org
www.telescopeman.us
www.telescopeman.info

Aug 23, 2011 | Tasco Luminova 40114675 (675 x 114mm)...

1 Answer

What do you use the barlow lesns for?


The Barlow lens goes between the diagonal and an eyepiece. It doubles (2x) the magnification of the eyepiece used.It does this by halving the f/ ratio of the scope.
Eyepiece alone gives 35x; barlow with eyepiece =70x.

Note: this scope comes with an erecting eyepiece and is NOT suitable for atronomy use (other than perhaps the moon)

Mar 19, 2011 | Tasco Specialty 301051N (100 x 50mm)...

1 Answer

Cannot see anything through the telescope


Put the diagonal into the focuser, then put the eyepiece with the largest number written on it into the diagonal. Take it outside during the daytime and practice focusing on a distant object.

DO NOT use the 2x barlow-- that gives too much magnification for that small aperture telescope.

Jan 09, 2011 | Tasco Galaxsee 46060675 (675 x 60mm)...

1 Answer

How to use the lents 1.5X ,2X , 3X Barlow lents


They multiply the magnification of the eyepieces. Insert the barlow first and then insert the eyepiece into the barlow.

SO--- let's use the 2x as an example. If you have a 20mm eyepiece, then with the 2x barlow it becomes a 10mm eyepiece.

Aug 24, 2010 | Tasco Galaxsee 45-060675 Telescope

1 Answer

What is the barlow lens for and how do i use it


It multiplies the normal magnification of the eyepiece. They come in 2x, 3x, 4x, and 5x powers.

Normally in a very small telescope like your scope, they are completely useless! They generate too much magnification for that small aperture.

You would normally put the barlow into the telescope, and then put the eyepiece into the barlow lens.

Jun 15, 2010 | Edu-Science (10166) Telescope

1 Answer

I have a 3x Barlow telescope that is completely disassembled and I need instructions on how to reassemble thee entire telescope.


There is no such thing as a 3x barlow telescope. A barlow is a small accessory that multiplies the magnification of any eyepiece.

This is a barlow-
http://www.agenaastro.com/GSO-1-25-2x-Barlow-Lens-p/obar-gs-gs2bl.htm

May 19, 2010 | Optics

1 Answer

When i bought my tasco 46-114500 i did not receive my 250x lens can you help me dennis at 419-349-1983


You mean your 2x or 3x barlow. These can be purchased from many on-line retailers:

Here are two:

http://www.telescope.com/control/category/~category_id=barlows

http://www.agenaastro.com/Barlow-Lens-1-25-inch-s/66.htm

Nov 07, 2009 | Tasco Galaxsee 46114500 (500 x 114mm)...

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 | Optics

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