Archive for April, 2010

Latest Telescope Lens Auctions

Thursday, April 29th, 2010 at 11:45 am  
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Here are some items you might buy on Ebay auctions:

High Quality Binoculars 22x36 field lens telescopes
220662892026 0 Latest Telescope Lens AuctionsUS $11.84 (0 Bid)
End Date: Sunday Sep-05-2010 19:39:46 PDT
Bid now | Add to watch list
NEW TABLE TOP TELESCOPE - 67x MAG + TRIPOD + ASTRO LENS
200514660101 0 Latest Telescope Lens AuctionsUS $11.05
End Date: Sunday Sep-05-2010 21:00:36 PDT
Buy It Now for only: US $11.05
Buy it now | Add to watch list

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logo Latest Telescope Lens Auctions
Hunting Camping 15x32 Optics Lens Monocular Telescopes
Hunting Camping 15x32 Optics Lens Monocular Telescopes
Paypal   US $.99 		Lens Cleaning Pen Lenspen for Telescope Binocular PL
Lens Cleaning Pen Lenspen for Telescope Binocular PL
Paypal   US $1.00 		VINTAGE LENS FOR CAMERA BINOCULAR TELESCOPE
VINTAGE LENS FOR CAMERA BINOCULAR TELESCOPE
Paypal   US $7.50

An astronomical telescope uses an objective lens of focal length?

Wednesday, April 28th, 2010 at 5:42 pm  
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An astronomical telescope uses an objective lens of focal length 15m and eye lens of focal length 1cm. What is angular magnification of the telescope?If this telescope is used to view Moon, what is diameter of the image of Moon formed by the objective lens?

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logo An astronomical telescope uses an objective lens of focal length?
25MM Lens4IR IP Camera Web Cam Optical Telescope View
25MM Lens4IR IP Camera Web Cam Optical Telescope View
Paypal   US $24.99 		8x Zoom Lens Optical Telescope Camera For Mobile Phone
8x Zoom Lens Optical Telescope Camera For Mobile Phone
Paypal   US $20.89 		Telephoto Lens Telescope for Phone Camera Nokia 6600
Telephoto Lens Telescope for Phone Camera Nokia 6600
Paypal   US $17.00

Compare the function of the objective lens of a telescope with the objective of a?

Monday, April 26th, 2010 at 7:40 am  
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Compare the function of the objective lens of a telescope with the objective of a
microscope. In each case, do you want a large focal length or small? Why? Where is your
object? Where and what kind of image is formed? Compare the function of the eyepiece
in both instruments. Do you want a large focal length or small? Why? Where is your
“object”? Where and what kind of image is formed?

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logo Compare the function of the objective lens of a telescope with the objective of a?
25MM Lens4IR IP Camera Web Cam Optical Telescope View
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Paypal   US $24.99 		8x Zoom Lens Optical Telescope Camera For Mobile Phone
8x Zoom Lens Optical Telescope Camera For Mobile Phone
Paypal   US $20.89 		Telephoto Lens Telescope for Phone Camera Nokia 6600
Telephoto Lens Telescope for Phone Camera Nokia 6600
Paypal   US $17.00

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