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Binocular Illumination: Comparing Illumination in the GO22x85, WO22x70 and Tak22x60
[CN Report | 12/30/09 | by Ed Zarenski
We often hear people state exit pupil is what determines the brightness of your binoculars. But stop for a moment and think, that does not explain why some. . .

Binocular Resolution: Handheld vs Mounted
[CN Report | 03/14/06 | by Ed Zarenski
The purpose of this short paper is to help binocular observers understand why a lower powered binocular is often recommended for handheld use. . .

CN Report: 100 Binocular Deep Sky Objects
[CN Report | 11/29/05 | by Ed Zarenski
This list is organized into object gruops within areas of the sky.. . .

CN Report: 100mm Binoculars - What Can You See?
[CN Report | 10/15/04 | by Ed Zarenski
Ed Zarenski takes a look at the relative performance of several available 100mm binoculars. . .

CN Report: Affect of Eye Pupil on Binocular Aperture
[CN Report | 08/01/04 | by Ed Zarenski
In a telescope, you can vary the exit pupil by changing the eyepiece. In a fixed power binocular the exit pupil you purchase is the exit pupil you live wit. . .

CN Report: Bincoular Tests & Comparisons
[CN Report | 01/22/06 | by Ed Zarenski
Oberwerk 25x100 IF, Celestron 25x100 Skymaster, Garrett Optical 20x80 Gemini, Oberwerk BT100 Binocular Telescope. . .

CN Report: How to Understand Binocular Performance
[CN Report | 02/06/03 | by Ed Zarenski
Do you really understand binocular performance? If you don't now, you will when you finish this review . . .

CN Report: Limiting Magnitude in Binoculars
[CN Report | 09/03/03 | by Ed Zarenski
What exactly is the limiting magnitude of a pair of binoculars? Does it depend on the size? The magnification? . . .

CN Report: Nikon Action Extremes 8x40, 10x50 and 12x50
[CN Report | 01/23/05 | by Ed Zarenski
Ed Zarenski compares Nikon's Action Extreme binoculars to several competing instruments. . .

CN Report: Oberwerk Ultra 15x70
[CN Report | 10/24/06 | by Ed Zarenski
The buzz on the street is all about the new "premium" binocular. There are a number of importers/distributors currently offering what appears to be the s. . .

CN Report: Small Binocular Reports A Dozen 8's
[CN Report | 03/11/08 | by Ed Zarenski
This is one in a series of "Small Binocular" reports that will detail and summarize all my findings from eight months of tests and measures on over 30 bin. . .

CN Report: Vixen 30 x 125mm Binoculars
[CN Report | 02/08/04 | by Allister St. Claire
The big binoculars of the astronomy world. Allister St. Claire looks at these 30x magnification binos that have a whopping 125mm aperture. . .

CN Report: Vixen 30x125s vs ITE T 100s
[CN Report | 02/08/04 | by Allister St. Claire
Allister St. Claire shares his experiences with these jumbo binoculars over a two month period. . .

CN Report: Vixen BT80 Binocular Telescope
[CN Report | 03/19/00 | by Allister St. Claire
Allister St. Claire takes a look at these 80mm binoculars which use standard 1.25" eyepieces. . .

Comparing Binoculars - GO22x85, WO22x70, Tak22x60
[CN Report | 03/18/10 | by Ed Zarenski
First, let me say these are three fine binoculars. Oh yes, one is better than the others, but none of the three would be something you wouldn’t want to own. . .

Small Binocular Reports: Three Families
[CN Report | 01/28/08 | by Ed Zarenski
This is one in a series of "Small Binocular" reports that will detail and summarize all my findings from eight months of tests and measures on over 30 bin. . .

Small Binocular Reports: The 10 x 50s
[CN Report | 01/22/08 | by Ed Zarenski
This is one in a series of "Small Binocular" reports that will detail and summarize all my findings from eight months of tests and measures on over 30 bin. . .

Small Binocular Reports: The 42mm Roofs
[CN Report | 01/29/08 | by Ed Zarenski
This is one in a series of "Small Binocular" reports that will detail and summarize all my findings from eight months of tests and measures on over 30 bin. . .

Small Wonder: The Meade ETX-60 AT
[User Review]  | 09/27/03 | by Rod Mollise
Well, I just couldn't resist the allure of an ETX-60, Meade's little-bitty goto scope, for $197.00 US$ (from the U.S. retailer, Wal-Mart). This small scope. . .

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