Latest Telescope Lens Auctions

Sunday, May 30th, 2010 at 9:52 am

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Here are some items you might buy on Ebay auctions:

8x Zoom Lens Optical Telescope Camera For Mobile Phone

US $20.89
End Date: Saturday Sep-04-2010 18:42:56 PDT
Buy It Now for only: US $20.89
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Telescope 6XZOOM TELEPHOTO LENS CAMERA for iPhone 3G

US $9.35
End Date: Saturday Sep-04-2010 19:35:37 PDT
Buy It Now for only: US $9.35
Buy it now | Add to watch list

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Lens Cleaning Pen Lenspen for Telescope Binocular PL
Paypal

US $1.00

Lens Cleaning Pen Lenspen for Telescope Binocular
Paypal

US $1.00

Lens Cleaning Pen Brush Lenspen for Telescope Binocular
Paypal

US $2.69

Lens Cleaning Pen for camcorders binoculars telescopes
Paypal

US $3.12

Lens Grinding Mirrors Astronomical Telescopes Silvering
Paypal

US $4.00

Lens Cleaning Pen for Telescope Binocular PL Camera
Paypal

US $4.15

How to build a parabolic lens for a telescope?

Sunday, May 30th, 2010 at 3:44 am

Comments (1)

-were to get the material
-how to get the parabolic shape
-how to polish it
-etc..

Thanks a lot!
sorry, i meant mirror, not lens!

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Meade 1000mm f 11 D90mm mirror lens scope telescope
Paypal

US $90.00

High Quality Binoculars 22x36 field lens telescopes
Paypal

US $11.84

Digital Video Camera Camcorder With Telescope Zoom Lens
Paypal

US $149.95

If I’m building a telescope using a 2x mag. lens and a 5x lens, what’s the largest magnification possible?

Thursday, May 27th, 2010 at 5:55 pm

Comments (3)

Also, which lens would be the objective lens, and how would I figure out the length of my telescope?
Also, which lens would be the objective lens, and how would I figure out the length of my telescope?

This is a homework problem. I have the answer but I still don't understand... All I was given was the magnifications. No lens diameter, no focal lengths, etc.