Question about Tasco 200x50mm Refractor Telescope

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Can not focus on full moon,erecting tube ,,barlow ????

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Do not use the 2xbarlow, put the eyepiece with the largest number written on it into the focuser --- this scope is 50mm the same aperture as a 10x30mm pair of binoculars.

The max magnification is about 50 times aperture. Your scope is about 1.5 inches== so 75 power is TOPS for this scope.

Posted on Oct 24, 2010

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1 Answer

No image through lenses


1. During the daylight point the telescope towards an object (water tower, building ) something about 1/2 mile away.
2. Locate the object in your finder.
3. Use the 12.5mm lens (50x) and look through the telescope. Do not use the erect prism
4. Align the finder to what you see in the scope.
5. You can use the 4mm to fine adjust the finder.
6. On a good, clear night.Leave the scope out to reach thermal equilibrium ( about a hour) Point the finder towards the moon
7. Use the 12.5mm and then focus on the moon.

Note: This is NOT a quality scope. Avoid any scope with .965 eyepieces and silly magnifications! Max power on this scope on a PERFECT night is 200x and Huygens (H12.5) eyepieces give very narrow and poor viewing. Do not use the 3x barlow or the erecting prism. the erecting prism is for terrestrial viewing only and the barlow, although it increases the eyepiece by 3x, will also narrow the view.
Good Luck!

Dec 05, 2011 | Rokinon 62550 Telescope

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

I bought aTasco Space Staion telescope (Model 49114500(Reflector) second hand,came with 4 different len's, but still can not see ANYTHING! There's a bright full moon out, but can not see anything. No light...


Put the eyepiece with the largest number written on it into the focuser. DO NOT use the 2x barlow if you have one. Go outside and try again.. The end with the focuser is the UP end of the tube. The mirror inside is the BOTTOM of the tube nearest the ground.

Jan 20, 2011 | Tasco Optics

1 Answer

We have a refractor AZ2 holder (the only name we have.) No manual, several lenes, but how to put them together??? The lenses are SR4mm, H12.5mm, 1.5X erecting eyepiece & 3X Barlow Lens. Hope you can...


The 3 x barlow will be useless for this small telescope.

Put the 1.5 x erecting PRISM into the telescope and then put the eyepiece with the largest number written on it into the erecting prism. This is your lowest magnification.

Take the scope outside during the daytime and practice focusing on a distant object. Turn the focuser knobs slowly until the object comes into sharp focus.

Aug 07, 2010 | Optics

1 Answer

I have erected my new konus 500 telescope but despite using the focussing dial I could not get the moon to focus


To much magnification. DO NOT use the 2x barlow if you have one. Put the eyepiece with the largest number written on it into the telescope.

Try again.

Dec 28, 2009 | Konusmotor 500 (230 x 114mm) Telescope

1 Answer

I am 9 can't see out of my galileo 700x60 telescope what do i need to do


there are 3 types of telescopes:
1)refractor, uses lenses
2)reflector, uses mirrors
3)catadioptric, uses both

try this and practice doing this during the day time, it's easier.

get your eyepiece, the one with the highest number on it (# mm); this is your lowest power eyepiece, always use this first (wider view and easier to see where you're pointing it), and place it in your telescope.

next, use the focusing knob to focus on a target (a faraway tree, lamp post, etc.). once you have it focused, and if you want to get a closer look, get the next highest number eyepiece and refocus on the target. this is how you change magnification.
if you have a barlow lens (2x or 3x) this will also change the magnification by 2x or 3x without having to buy other eyepieces, although you can still buy more.
put it together in this order:
eyepiece-->barlow lens-->telescope

use the star diagnal for land viewing.

if you have a reflector telescope,
the open part of the telescope tube next to the focuser points to your target. focus it the same as above.

oh, and sometimes, with refractors, you might have to use the
45 degree or 90 degree diagnal to focus the telescope.

and google how to use a telescope. there's nice observing tips :D

hope this helps :D

oh, and check out the moon at night. it's a very nice target.
best time to observe the moon is when it's not full.
you gotta check out the 'terminator' (area on the moon where the light and darkness is separated.


Aug 12, 2009 | Galileo 700 x 60 Refractor Telescope

1 Answer

Please help. I need the user manual for c-star


That is a very simple reflector style telescope --- here is my suggestions-

1. Forget about the barlow--- since this scope has a very small aperture you will not be able to get much more than about 125 power-- if you try to use the barlow which DOUBLES or TRIPLES the power of your eyepieces the images you see will be degraded and it will be VERY hard to point the telescope and focus.

2. Put the eyepiece with the largest number (which is the lowest magnification) into the telescope and take it outside during the day and practice focusing on a distant object.

3. Take it out at night when the moon is up and LESS THAN 3/4 full-- the moon should be your first night target...... if all goes well try to find Saturn which is up in the sky right now, and appears as a slightly yellow "star".

4. The smaller telescope is the finder scope and mounts on top of the main telescope tube. Use this to point the main telescope------- but you must first line it up on a distant object so that the small telescope and the big tube are both pointed exactly alike.

5. Try to find a local astronomy club and attend one of their star parties.

6. Here is a manual for a telescope that is very similar to what you have except yours is on an Alt Az Mount while the one below is on an equatorial mount but many of the tube parts are the same--

http://www.meade.com/manuals/TelescopeManuals/Reflectors/Meade114STEQ-D.pdf




Mar 24, 2009 | Optics

1 Answer

Cannot see anything out of main telescope


Do NOT use the barlow lens-- put the lowest magnification eyepiece into the scope-- practice focusing on the moon -- turn the focus knob slowly in and out until you get a sharp image.

Telescopes only show an area of sky about 1 degree wide or LESS--- this is about the size of the TIP of your finger held at arms length................ your scope is best used at low magnification.

Dec 30, 2008 | Edu-Science (10166) Telescope

1 Answer

Upside down images


ALL astronomical telescopes show upside down images it is normal. Put the eyepiece with the LARGEST number written on it into the diagonal. Do NOT use the 2x barlow it is too much magnification for that small aperture telescope.



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

Jan 05, 2008 | Bushnell Voyager 78-9440 (440 x 12.5mm)...

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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