Questions & Answers
Can't see anything
This is a simple refractor telescope. Put the diagional into the focuser and then put the eyepiece with the largest number written on it into the diagonal. DO NOT USE the 2x barlow.
Take the scope outside during the day and point it at a building or telephone pole in the distance-- take the lens cap off. Practice focusing the scope on the distant object until you get a sharp clear image.
When you look through he lenses it looks like it
Eyepieces can be cleaned using these instructions:
If this is a reflector the mirrors can be removed and cleaned using this method: watch the video:
they did not give
Why would you need a 60mm eyepiece? I doubt these can even be purchased since I have never seen anything over 50mm -- this is a VERY low power eyepiece! The bigger the number the lower the magnification.
The normal ones would be 20mm-25mm and a 10mm-12mm.
This company sells eyepieces-- they come in 3 sizes, .965, 1.25, and 2 inch. Measure the hole in the focuser and buy the correct size:
How much is the Bushnell
I would not buy a Bushnell or Tasco brand telescope regardless of the price. You can do much better than these "toy" telescopes.
Check out this web site:
How do i set up all the parts
Below this is a link that takes you through each step using both pictures and written articles.
Hope it would help solve your problem.
I need an instruction manual for a Bushnell Banner
You will not find that manual. They all assemble and are used in the same way. Find a manual that is similar to your scope and use it.
Off the Bushnell site here:
Just received Bushnell 420x70mm telescope,
You don't need it-- instead just download the free Stellarium planetarium software here:
Put in your location and it will show you the sky for any time or date. It's a really neat free Astronomy program.
I can't see out of the scope and really don't
There is a good website for beginners with these small scopes at THIS LINK
To start out, try the scope with the LEAST powerful eyepiece (the one with the biggest number) in daylight (but never point it anywhere near the Sun). You need to zero in the finder scope in daylight too, or you will never be able to find objects with the main scope at night. If you got a Barlow lens with this scope, throw it away.
How do I adjust the telescope so everything
You realize that this is a very small aperture telescope. Not much bigger than a pair of 10x50mm binoculars. You have about 2 inches or so of glass-- so your maximum possible magnification is some where around 100 power.
60-70power is more than enough to see the cloud bands on Jupiter or the rings of Saturn and of course the moon. Stars are always stars, just points of light, regardless of the size of the telescope.
You should use the eyepiece with the largest number written on it-- this is your LOWEST magnification. The 2x barlow which you may have will probably be too much magnification is used along with the eyepiece with the SMALLEST number written on it. Locate an Astronomy club and the members will help you with your telescope.
How do i put it
All of Bushnell's assembly manuals are on this web site:
I need to know how
Go to the URL below it is the online complete manual for this telescope from Bushnell, it is free
I am able to see with the 20m Lens but once i
That's because the 5 mm is too much magnification for your small telescope. Maximum magnification is a function of APERTURE. Which is how big is the front lens or the mirror.
Your scope has about a 2 inch aperture, so the maximum posiible magnification is about 100 power (if it is like the one in the picture above)
50 times aperture (2 inches)-- 100 power
It will only achieve 50 times if the optics are perfect and the sky is very transparent and stable. Usually only 30-40 times is all you normally get.
I can't see anything out
Use the 20mm to view an object (building, tree etc.) far away during the daytime. Align the finderscope to the object.
To view the moon, leave the scope out to equalize the temperature for at least 1/2 hour. Use the 20mm and no barlow. Point the scope towards the moon by sighting along the barrel of the scope, then use the finder to zero in on the moon. You may then switch to the 4mm eyepiece. for a more magnified view of the moon. You will have to keep moving the telescope because of the earth's rotation. The higher the magnification, the more you will have to adjust the scope. Because of the cheap finderscope, finding the planets will be difficult. Best to always sight down the length of the scope to get you close. The planets will be small and indistinct.
This is not a astronomical telescope! May be used for views of the moon
but the cheap mount is not suitable for other planets. Max power would
be 225x NOT 420x as advertised. The erecting prism is for terrestrial
Nothing discourages an amateur astronomer more than a toy store telescope. My advise would be to use this scope for nature watching and go buy a good telescope (Meade, Celestron, Orion etc.). Even Those 60mm refractors are superior to this! A descent scope would cost a minimum of $200
Missing the eyepiece
Eyepieces come in three sizes, .965, 1.25, and 2 inch. Measure the hole in the focuser and buy the correct size. Here are two retailers that sell eyepieces.
Big lens on end of
If you can remove the lens you can clean it with alcohol (97% or better) and distilled water plus a drop of dish soap. (50% alcohol, 50% water) rinse with distilled water.
If that does not clean the lens, use pure acetone (not the perfumed, nail polish remover) Again, rinse with distilled water.
Might as well try since this is not much of a telescope, more of a toy to discourage would be astronomers.
Not finding what you are looking for?