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I need a manual for a Jason Telescope 307 Explorer. All the images are upside down.

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That is normal for an astronomical telescope. For right side up images, use a mirror diagonal adapter at the eyepiece end.

Posted on Jul 20, 2009

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Image is upside down in Celestron PowerSeeker 114AZ telescope


That's because this telescope is what's called a reflector. The image in reflector telescopes are upside down. This isn't an issue since reflectors are designed for looking at the night sky.

Jun 11, 2014 | Celestron PowerSeeker 114 EQ Telescope

1 Answer

Cant get an image.Is it right that the view finderimage is upside down


The image of all astronomical telescopes are upside down (SCTs are upside down and reversed). RACI (right angled, correct image) finders do produce a right-side up image. For daytime use a erect image prism eyepiece.
Follow below instructions (except 7 in your case)

  1. Get Stellarium or another fine astronomy program
  2. During the day, point the telescope at a part of the landscape about 100 yards away.
  3. Use the lowest power eyepiece (highest number) in the focal tube.
  4. Center the landscape object in the telescope.
  5. Align the finder scope so that it points exactly where the main telescope is.
  6. At night, leave the scope out to reach thermal equilibrium (about an hour for small reflectors and refractors)
  7. If the scope is on a EQ mount, polar align.
  8. Point the finder at the moon. The moon should be in the main scope also.
  9. Practice finding the moon before you start on the planets
  10. Once you are comfortable with the moon and planets, you can go for the deep sky objects

Feb 28, 2013 | Vivitar Viv-tel-76700 75x/350x Reflector...

1 Answer

I have a jason saturn telescope and everything is upside down


That's completely normal and correct for all astronomical telescopes.

If you want upright images for viewing terrestrial objects then you need to buy an adaptor called an "erecting prism" which sits between the eyepiece and the focuser. Astronomy telescopes don't use them as any unnecessary optical elements reduce image quality and contrast.

To get the correct sized erecting prism, measure the diameter of your eyepiece where it fits into the telescope. If it's 1.25" (31.75mm) then you'll find loads of them from online sites. If it's 0.965" (24.5mm) then it will be harder to find one as those sizes are only used on cheap chuck away toy telescopes, and any you do find are likely to be of very poor optical quality. IIRC, "Jason Saturn" was a brand name applied to a number of different models sourced from various manufacturers in N.America; the quality of individual models varies but I think they all used 1.25" viewfinders.

Aug 27, 2011 | Optics

1 Answer

Dear Sirs, I got a Barska telescope 84-4363 (lens 76700), when looking through it the picture is upside down. There is a additional mirror sent with, but the picture then is not clear anymore. Since there...


All astronomical telescopes have upside down images -- there is no up or down in outer space. This is probably a REFECTOR style telescope. The part with the small mirror is called a diagonal. Certain types of diagonals called "erecting diagonal" can be used to flip the image right side up for terrestrial viewing. You do not need them for star gazing.

Apr 13, 2011 | Barska Optics 84-4363 Telescope

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Manual or Instructions to fix Telescope


Here is the manual.

http://www.tasco.com/products/manuals/Luminova40-076420Inst.pdf

This is a reflector style telescope the focuser is on the FRONT of the telescope, the mirror is the BOTTOM of the telescope. All astronomical telescope show upside down images. It's normal.

Read my TIPS on my profile page -- especially the frequently asked questions TIP.

Jun 22, 2010 | Tasco Luminova 40076420 (420 x 76mm)...

1 Answer

Upside down image


All astronomical telescopes have upside down images. NO up or down in space. You can purchase an "erecting" diagonal, but it will cost almost as much as your telescope.

Google "erecting prism telescope".

Oct 15, 2009 | Bushnell Voyager 78-9970 Telescope

1 Answer

Set up a Jason 307 Explorer Telescope?


Jason and Bushnell are the same company. Here is a list of the manuals. Find your telescope-
http://www.opticsplanet.net/bushnell-warranty.html

Look down the web page.

Aug 10, 2009 | Bushnell Optics

1 Answer

Upside down images on my telescope. Bought used -no manuel. What to do?


In a refractor images are upside down as with most telescopes. You need an image erector to create a normal correct R and L and Up and Down image. It is a lens which goes in front of the eyepiece to give a correct image.

Jun 01, 2009 | Fieldvision 114mm Reflector (114 x 114mm)...

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