Question about Bushnell Voyager 78-9945 Telescope

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The finderscope for the Bushnel 78-9930 telescope will not align w/ the telescope. The Azimuth adjustment knob bottoms out before the alignment is achieved. Everything is molded one piece. Besides the Altitude knob. There are no other screws to adjust the finderscope. Please advise?

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Obviously the mounting for the finderscope is NOT parallel with the tube-- probably the screw holes were not drilled correctly.

This is one of the reasons why we never recommend Tasco or Bushnell telescopes. They are considered "toy" telescopes and most of them are not suitable for Astronomy.

Return it and buy one of these:

http://www.telescope.com/control/product/~category_id=classicdobs/~pcategory=dobsonians/~product_id=08942

OR re-drill the holes so the finder scope is more parallel with the main tube.

Posted on Aug 28, 2010

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Is it possible that something inside a telescope could get jarred out of place or alignment and that is the reason I can't see much thru it ?


If it's a reflector, then you have two mirrors that could get out of alignment, but you probably will still be able to see something unless it's way out of alignment- usually the view will just be blurry or misshapen. Less likely the problem with a refractor unless you dropped it or gave it a serious whack. When you're first trying to find an object, use the LOWEST power eyepiece first, because that gives you the widest field of view and you're more likely to see the object even if your finderscope is a little out of alignment.

When you line up the finderscope, make sure you center a large object in the main telescope FIRST, using the lowest power eyepiece you have (the lower power eyepiece is usually the longer one), then adjust the finderscope so that its crosshairs are right on the object while it is still centered in the main telescope. Use the Moon, or during the day, a roof peak or top of a telephone pole. If you reverse the process, you won't be in alignment. There are lots of other reasons you may not be able to see something, but lining up the finderscope is something you should do at the beginning of every observing session. Try it first during the day so you can see what you're doing.

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1 Answer

We bought our child a edu 102 mm astro nova telescope almost 1 yr ago. we have tried to use it many times and it doesnt work. When looking through the focus knob we can locate a few stars, but when we...


You must ALIGN the finder scope with the main tube FIRST! During the daytime focus on the top of a distant telephone pole or a distant building.

Lock down the main scope and do not move it-- then adjust the cross hairs on the same distant object.

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The finderscope must be aligned with the MAIN tube. During the day time point the scope at a distant object like the very top of a telesphone pole or a distant building.

Get the pole or the building in the center of the eyepiece on the main telescope. LOCK everything down and do not move the scope. Now adjust the finderscope to point at the exact same object.

This will get you roughly aligned.

At night do the sanme thing on a star or the moon-- and you will fine tune the finderscope.

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

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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

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Any tips for aligning the scope and finderscope. I'm finding it quite difficult to do.


Go outside during the day time and line up the top of a telephone pole in the distance in the MAIN telescope eyepiece.

Then without moving the telescope align the small finderscope on the exact same target.

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How do you turn on the red dot finderscope


There is usually a switch on the side-- turn the knob.

There will be 3 knobs the other TWO are to align the red dot.

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1 Answer

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This is not a real telescope, it is a toy. You will be lucky to see anything with the 20mm lens only. the rest are junk. The telescope needs to be collimated (see your manual) and the finder aligned with the telescope. Align the finder with the scope during the day, although this model was known for poor mounting on the finderscope and will become un-aligned easily.

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I have the Nexstar 8. It will not auto align or manual....


You must set TIME, DATE, and SITE-- probably does not know your actual location. Read the manual and perform all of the setup procedures.

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1 Answer

Red dot finderscope alignment problem


point the telescope at some thing during the day and adjust the finder scope and at night point at a star look through the eye piece and center the object in the eye piece then adjust the finder scope.

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Celestron nexstar 11" gps scope


Be sure that the Azimuth Axis is Lock, you migth want to try and move the telescope in the Azimuth to make sure it is it is locked. Be carful not to force it. I have seen on some post where the locking part of the Azimuth somtimes breaks. and the Azimuth Axis will just spin freely Locked down or not.

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