Magnacraft® 10×50 Astronomical Binoculars With Case

14 Comments

1. ficco bittkerino says:

   January 30, 2010 at 12:44 am

   is there like anything left to micowave ?
2. cant kumi says:

   January 31, 2010 at 6:40 am

   Thanks for posting, just started watching too:)
3. kosciak says:

   February 3, 2010 at 10:38 pm

   List Price $99.99 Now $36.89 with Free Shipping
4. dol says:

   February 5, 2010 at 7:02 pm

   Nikon 7510 Travelite 10 X 25 mm V Binoculars
   by Nikon
   (27)
   Buy new: $144.95 $61.71
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   (Ranking is updated hourly. Visit the Bestsellers in Hunting & Fishing list for authoritative information on this product’s current rank.)
5. ere ther says:

   February 7, 2010 at 1:53 pm

   I'm afraid much of David A's answer is incorrect. The 60 number is the magnification. it makes the image seem 60 times bigger, not nearer. The second number is the the entrance pupil diameter, effectively the diameter in mm of the front lens.

   To see as clearly as possible at night one needs to ensure that the eye is collecting as much light as possible. The pupil diameter of the eye is usually considered to be about 8mm (for instrument design). To find this in a telescope divide the second number by the first. In your example 35 / 60 = 0.6.

   This value needs to be as large as possible. In this example the area of your eye pupil divided by the exit pupil of the telescope is the square of (0.6/8) = 0.006. Hence compared to the naked eye you can expect the scene to be only 0.6% as bright as seen by the unaided eye.

   This may seem disastrous. However, what it tells you is that you cannot have such a large magnification for terrestrial binoculars. A more sensible specification would be 8 x 60. or 10 x 75. These magnification and pupil sizes will give little loss of brightness.
6. eightone says:

   February 9, 2010 at 9:54 pm

   Jandy: I sure hope Buzz has its own place — that seems very important.
7. rejchaio says:

   February 11, 2010 at 2:42 am

   Weather you’re watching your favorite sporting event, bird watching or just nature hiking the Pentax Whitetails Binoculars may be the binoculars you have been looking for. They feature a rubber covered exterior that provides a sure grip and protects the …
8. romnes says:

   February 16, 2010 at 7:24 pm

   MAGNACRAFT® 35X – 350X POWER TELESCOPE – More at http://www.ebidds.com
9. kadzyk ayne says:

   February 19, 2010 at 12:16 am

   RT Binoculars For #Astronomy Know the Basics | Skylook.net
10. koossutt says:

    February 24, 2010 at 11:20 am

    Callaway Tournament Binoculars
11. hammal says:

    March 6, 2010 at 6:39 am

    What are the scope specs?
12. heinah hoffrinows says:

    March 9, 2010 at 6:36 pm

    hahahaha yeah
13. khea says:

    March 12, 2010 at 8:47 am

    The Cuban Missile Crisis of 1963. The USSR under Nikita Kruchef put nuclear missiles in Cuba 90 miles from our shores and Kennedy made them remove them. We almost went to war. But they pulled them out. Thank God.
14. chessenia says:

    March 19, 2010 at 3:23 am

    ummm excuse me, what about that sniper shot you did from earlier? You were on a building with binoculars? JFK shot?