Question about Bushnell NorthStar Goto 100mm 788840 Maksutov-Cassegrain Compact Telescopes

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New Telescope I returned my Bushnell 100mm maksotuv cassagrain...it was a bad peice. Now i'm deciding for a better one, one that has the same features like the GO To program that actually works and a sharp focus and tracking technology. I hope there is a telescope like that under $600. Any suggestions? Any help appreciated.

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Meade and Celestron both make small goto scopes--

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

http://www.universetoday.com/guide-to-space/telescopes/celestron-se/

However can I persuade you to buy a nice PUSHTO Dobsonian like this one--

http://www.telescope.com/control/product/~category_id=dobsonians/~pcategory=telescopes/~product_id=27183

Posted on May 15, 2009

Testimonial: "Thanks, I appreciate the help, handful of good telescopes there"

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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:

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Read my tips on my profile page, or return the telescope to where you bought it.

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Can you reverse the cable end to the hand controller-- a bad cable can cause this. Also low power supply, depleted batteries can also cause this.

Return the hand controller for replacement if batteries and or a new cable do not fix this.

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Will it work without the eye peice and Diagonal


It will work without the diagonal (maybe) if you have enough focus range BUT it must have an eyepiece. Measure the hole. It's eithe .965 or 1.25 inch-- you can buy eyepieces at many online retailers. Here is one:

http://stores.shop.ebay.com/Agena-AstroProducts__W0QQ_armrsZ1

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Here are the Bushnell manuals:
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Look down the page for your telescope.

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BUSHNELL DEEP SPACE SERIES 420 X 60 REFRACTOR TELESCOPE MODEL 78


Do not buy either telescope-- both are junk.

Instead buy one of these --

http://www.telescope.com/control/product/~category_id=dobsonians/~pcategory=telescopes/~product_id=09804

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

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Apr 18, 2009 | Bushnell Deep Space 78-9512 (120 x 60mm)...

1 Answer

Not seeing a larger, more detailed image w/ Bushnell 78-8850.


Currently the rings of Saturn are nearly edge on so you won't see any details in them. Shortly the rings will appear edge on and the ring will disappear completely for a few months. Gradually, they will return and angle more towards Earth at which time you will be able to see some of the ring details.

There are many factors that can reduce your ability to see planetary detail. I had my Celestron 200mm out the other night looking at Saturn but saw no details because the atmosphere was too unstable. There are also limits to what a telescope can realistically view.

There is a general rule of thumb that states you can expect to view 50x per inch of aperture. Your telescope has roughly 5" of aperture. 5 times 50 equals a maximum of 250x. However, this is a guideline. On bad nights like I had you'll never reach that 250x since objects will appear blurry or unstable. On good nights, you can exceed this.

You can calculate your telescope power by dividing your telescope focal length by the focal length of the eyepiece ( that 4,9,20mm number).

An excellent object to look at when it comes back in view is Jupiter. It's always interesting and you can see four of it's moons.

Good luck and clear skies.

-jodair

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Not worth repairing-- a new focuser for your telescope would cost as much or more than the telescope-- unless you can find a discarded telescope of the same model..... for parts.

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2 Answers

GO TO northsar program not working.


actually i find out from bushnell that i got a bad peice. Thanks for those who did try to help and if there r people who hav the same problem get a new one becauseit might jus be a bad peice. Thanx all

Aug 12, 2007 | Bushnell NorthStar Goto 100mm 788840...

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