Question about Vivitar (1607225) Telescope

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Lens size/ power

I got this telescope and love it. However, I cannot find any of the more powerful lenses from vivitar. Does anyone know where I can find some with a power greater than 100x that will fit this scope? I have tried ebay and the like with no luck.
Thanks

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It is generally bad to go higher than 50 power per inch aperture, due to the wave nature of light. It will magnify, but the image will get steadily worse, and be 'fuzzy' and unable to sharpen. If the telescope is 60mm, then the maximum practical power is 118x
If you insist on going higher, consider the use of a barlow. That will make the eyepieces that you have go 2x greater magnification.

Posted on Jun 06, 2008

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Jun 27, 2009 | Vivitar (1607225) Telescope

1 Answer

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Once you know the diameter to shop for you can look for the focal length of the eyepiece you wish to purchase. They are rated such as 4mm, 10mm, 25mm, etc. The smaller numbers give you higher magnification. You can calculate the magnification by dividing the telescopes focal length by the eyepiece focal length. For example, let's say your telescope is has a focal length of 360mm and you have an eyepiece rated 10mm. Divide 360 by 10 and that gives you a magnification power of 36.

You can find eyepieces at many telescope dealers on the internet. Your selection will be far less if you use 0.965" eyepieces. You can purchase 0.965" to 1.25" adapters so that you can use the larger eyepieces with your telescope. However, on some telescopes the adapters will cause the new eyepiece to not come into focus.

You'll also find that eyepiece prices go all over the place. A good general purpose eyepiece is a type called the Plossl. The better eyepieces have more coatings too that allow more light to get through to your eye. You'll find these listed with terms like "fully multi-coated".

I hope this helps.

Good luck and clear skies!

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1 Answer

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You don't need to get Vivitar brand eyepieces to get replacement ones for your telescope. I'm not sure of the specifications for this particular telescope but in general they come in two barrel sizes for the eyepieces. The diameter of your eyepiece is probably 0.965" but could come in the more standard 1.25". You can measure the diameter and determine this quickly.

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You can find eyepieces at many telescope dealers on the internet. Your selection will be far less if you use 0.965" eyepieces. You can purchase 0.965" to 1.25" adapters so that you can use the larger eyepieces with your telescope. However, on some telescopes the adapters will cause the new eyepiece to not come into focus.

You'll also find that eyepiece prices go all over the place. A good general purpose eyepiece is a type called the Plossl. The better eyepieces have more coatings too that allow more light to get through to your eye. You'll find these listed with terms like "fully multi-coated".

I hope this helps.

Good luck and clear skies!

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Manual


I can scan it for you!

Feb 21, 2008 | Vivitar (1607225) Telescope

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