Category Archives: User Guides and Tutorials

How much magnification can I use with my telescope?

Posted on November 22, 2011 by Reviewer

 Everyones telescope is different, but a rough rule of thumb is around 30-50X per inch diameter of the main lens/mirror. A good ED refractor may, however, use 100X/inch on bright objects, so this is not a hard rule. You can always increase … Continue reading →

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Digiscoping with a Hawke Nature Trek spotting scope

Posted on November 15, 2011 by Reviewer

These methods apply to the Hawke Nature Trek 80mm & 100mm ED or non ED and the 65mm ED versions. For compact cameras (not bridge) use the Hawke large digiscoping adapter. Item number 3723. This simply clamps to the spotting … Continue reading →

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How to set a Binocular Dioptre Adjustment (right eye setting)

Posted on October 6, 2011 by Reviewer

Setting a binocular dioptre (right eye setting) is very easy to do, and takes less than 10 seconds with practice. So why do binoculars have a right eye dioptre wheel ?. Not every ones eyes are exactly the same. So … Continue reading →

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Observing Techniques . Cooling down time

Posted on October 4, 2011 by Reviewer

If starting out in astronomy , you may have heard of cooling down times . So what does this mean, and what are the benefits. When you first take a telescope outside in to the cool night time air, the … Continue reading →

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How to check binocular optics. The Lamp Post test

Posted on September 16, 2011 by Reviewer

Whenever I field test binoculars, I do the lamppost check.  Believe it or not, such a simple thing like a lamp post can reveal a lot about the optical quality of binoculars. First test is to centre the lamp post … Continue reading →

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What is a Zoom Binocular

Posted on September 1, 2011 by Reviewer

A pair of binoculars with a zoom feature have the benefit of giving you the choice of many different magnifications on one pair of binoculars. The varying power is altered by moving a small lever near one of the eye … Continue reading →

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What does ED glass mean

Posted on August 30, 2011 by Reviewer

ED stands for Extra low Dispersion glass. With this more expensive option you will find that all colours come to exactly the same point of focus. With binoculars and telescopes without ED glass you may notice false colour around the … Continue reading →

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What does Depth of Field mean

Posted on August 27, 2011 by Reviewer

Depth of field is the area that is in focus between two point when you look through the eyepiece. For example , when you focus precisely on an object at infinity, you may find that other targets are also in … Continue reading →

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How to set up a Celestron Nexstar 8 SE Telescope

Posted on August 10, 2011 by Reviewer
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What is a Binocular Tripod Adapter

Posted on August 6, 2011 by Reviewer

A binocular tripod adapter is a simple device that connects your binoculars to any tripod, mono pod or other support with standard tripod thread.  Should be usable with most modern binoculars. If in doubt contact your local dealer. Buy binocular … Continue reading →

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