What does field of view mean

With many binoculars you will see numbers such as 86m @ 1000m, or 143m @ 1000m for examples. So what do these numbers mean ?. In the 86m @ 1000m, this means at a distance of 1000m you can see 86m from one edge of view to the other. If you have a pair of binoculars showing (as in the 2nd example) 143m @ 1000m, you will see 143m from one edge of view to the other. In other words a much wider field of view.

 

 

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What is digiscoping

Digiscoping is the art of attching a camera to a telescope or spotting scope so that the telescope acts as a very long focal length telephoto lens allowing you to take close up shots from a distance. Digiscoping is very popular with birdwatchers and astronomers

Adapters are avilable for both compact cameras and SLR bodies

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illusion 7×35 monocular review

The illusion 7×35 monocular uses a porro prism design, rather than the more compact and widely used roof prism versions. The end result of the larger porro prism is that you get more light through and pound for pound a brighter image for your money.

Although the porro prism design is slightly larger than the usual choices, I found it very easy to hand hold. With a little practice I found that I could hold them and adjust the focus with one hand. The focusing is done as if you were using a right eye dioptre adjustment.

The wide 8 degrees field makes tracking moving objects easy. The porro prism and good quailty lens coating gives a bright and clear image with better than expected edge of field quality. All this from just a 35mm lens.

Comes complete with a handy carry case, lens caps and a neck strap. By far the best feature that is not on many monoculars is a tripod thread. Ideal for mounting on a mono-pod

Also available in 10×50 and 20×50

 

Click here to buy

 

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How far is the Sun from the Earth

The Sun is approx 93 million miles from the Earth. This distance is also reffered to as one Astronomical Unit or One AU

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How to view meteor showers on a budget

The great thing about viewing meteor showers like the Perseid’s is that it can be done for free. All you need is a dark sky away from street lights and a pair of eyes.

Additional equipment (optional) is a reclining chair and a flask of hot soup

Sit back and enjoy

 

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Ostara Elinor binoculars. New packaging for 2012

The superb Ostara Elinor binoculars now come packaged in bright and colourful retail box, with a wildlife image showing. This has been upgraded from the old packaging which was plain black.

The Ostara Elinor binoculars come in varying sizes for different uses. 8×45, 7×50, 10×50 and 12×50

 

Click here to buy

 

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Visionary U2 10×30 binoculars review

Outstanding performance binoculars from Visionary. The Visionary U2 binoculars have a body upgrade from the older “U” model. These feature some of the best edge of field quality I have seen in a pair of 30mm binoculars. By not including such features as nitrogen waterproofing and twist eye cups, it means you are getting top quality binoculars for an affordable price.

Handling is easy. They feel comfortable and well balanced. The focus wheel is silky smooth in operation. The dioptre adjustment stays in place once set.

Colours and contrast are excellent in varying light conditions. Whilst testing on a dull day, I could easily pick out detail in the foliage shadows. Despite being 10x they were easy to hand hold for long periods.

If quality of optics is more important than waterproofing and other added benefits, then you can,t go far wrong with the Visionary U2 10×30 binoculars

Click here to buy

 

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Celestron deluxe 8-24mm eyepiece. New for 2012

New for 2012 is the Celestron deluxe 8-24mm zoom eyepiece.  Features fully multi coated optics, good eye relief and 2″ or 1.25″ fitting

  • Focal lengths: 8mm to 24mm zoom
  • Field of view: 43° – 66°
  • Eye relief: 15 – 20mm
  • Fully multi-coated
  • Works in 2” and 1.25” eyepiece holders

Click here to buy

 

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Olivon TRB-28 ball head

 

The Olivon TRB-28 ball head is ideal for larger cameras. At just over 300g it feels robust and well constructed. The movement is smooth throughout the range, with no tight or loose spots. This is a very high quality ball head that is well within many peoples budget. Highly recommended

Visit Northern Optics to find a great selection of Olivon tripods and tripod heads

 

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Olivon large base plate for UDCH-C camera adapter. New product for 2012

New product for 2012 is the new large plate for the UDCH-C Olivon camera adapter. Now the UDCH-C becomes even more versatile. A new extra large base plate is available for larger bridge style cameras.
the plate is available as an accessory and fits all versions of the UDCH-C  

Click here for more information

 

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