Question about Bushnell NorthStar 78-8846 (675 x 114mm) Telescope

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Motor Doesn't appear to move the telescope & battery problem

It appears that my telescope "Red Dot Finder Scope" battery has died and I can't find a parts list to know what type or size battery to use to replace it with and the "Motorized movement Buttons" do not move. I replaced the 9V Battery but it still doesn't move.

Can you help me.

Bill

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Hey Bill, if you have a manual it should be in there. If you don't go here. http://www.bushnell.com/products/other-products/telescopes/instruction-manuals/ Good luck.

Posted on Aug 01, 2009

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The battery for the red dot finder scope on my Bushneel 78-9669 scope appears to be dead.\r\nHow do I remove the dead one ? What is the button battery number for a new one? Thanks.......Mike


Most red dot finders use a small watch style battery-- there will either be a compartment underneath and or something that opens on the side that contains the watch battery.

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We are trying to test out viewing land based objects using the 30X eyepiece, which according to the instructions, should appear right side up and not upside down! This is not happening.


It's NOT really a problem. ALL reflector style telescopes show upside down images. This will not affect your star gazing since there is no UP OR DOWN in outer space. Read my tips on my profile page.

You can buy an "erecting diagonal" for terrestrial viewing- BUT this is not what an astronomical telescope is actually used for.

So align the small finder scope on a distant object like the top of a telescope pole during the day time. Point the main tube at the pole and get the tip top in the main tube's eyepiece. Without moving the telescope adjust the crosshairs on the finder scope on the exact same spot. The moon should be your first target at night and you can check and refine the finder scope on the moon.

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1 Answer

We were given this as a gift with no manual. The on button must have been on a very long time. Is there a part, battery etc. that would need to be replaced in order to see out of it?


This appears to be a reflector telescope on an ALT AZ mount. It does not need power to be used. You might be referring to a red dot lighted finder scope on top of the main tube, which does have a small watch battery inside. The battery is available at Wal Mart and many other places.

Contact Galileo scopes for a manual here:

http://www.galileosplace.com/

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1 Answer

I have a new Brookstone compact telescope. The image in the smaller viewfinder is upside down making it difficult to line up with image in main telescope. Is this normal? And if so, any suggestions for...


Astronomical telescopes usually show an upside down image. There is a good reason for this- erecting the image needs more bits of glass in the light path, which reduces the amount of light and increases aberrations. Even if this is only slight, astronomers prefer to avoid it, and they don't really care which way up the Moon or Jupiter appear. It is possible to fit an erecting prism or eyepiece to most astronomical telescopes, and some of them come with one, but one wouldn't bother to do this with the small finder scope.

Telescope manuals recommend that you align the finder scope in daylight, by pointing the main scope at an object on the horizon and adjusting the finder to match (never point a telescope toward the Sun!). Once you have a tree or mountain peak in the center of the main scope's image, you can then adjust the screws around the finder scope to get the crosshairs (or red dot) centered on the same object. It is very difficult to do this job in the dark, especially as objects in the sky are constantly on the move.

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1 Answer

I can see objects through the finderscope, but cannot see anything through the telescope. What am I doing wrong?


Your finder scope is NOT lined up with the main tube. Get a distant object like the top of a telephone pole into the eyepiece of the main telescope tube.

Without moving the scope adjust the crosshairs or the red dot onto the exact same spot. Now your finder scope is lined up with the main telescope tube.

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1 Answer

How do I adjust the Mars-eye elec. finder.


Contact Galileo telescopes here for help:
http://www.galileosplace.com/

Assuming the batteries are OK, there should be adjustment screws on the finder for moving the red dot around.

Focus the telescope on a distant object, then without moving the scope adjust the dot on the same distant object.

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1 Answer

Red dot finder scope


Simple-- you can also do this during the day on an object at least 100 yards away-- but at night; get the moon centered in the eyepiece and without moving the telescope center the red dot on the moon. This will get you almost aligned-- then put a bright star in the eyepiece and readjust the red dot to center the star.

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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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1 Answer

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I had this problem too. You need to go into the "red dot finder" menu each time and just go into each option and confirm the blink intensity, etc. After I do this, it turns on.

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