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| Beginner's Astronomy Books
[User Review] | 04/16/03 | by Ed Zarenski
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| | This selection of books is intended for the novice beginner astronomer. The complete article from which this selection is a subset, Books for Astronomy, in. . . |
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| Books for Astronomy: For use by novice and avid intermediate astronomy enthusiasts
[User Review] | 04/16/03 | by Ed Zarenski
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| | I don’t remember the name of the first constellation guidebook I owned when I was a kid. What I do remember is the style of book was one that listed a char. . . |
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| Sky Atlas 2000.0 Deluxe
[User Review] | 03/15/04 | by Ed Zarenski
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| | Sky Atlas 2000.0 in its second edition offers nearly 90,000 stars, with all positions derived from the Hipparcos database, the most accurate survey ever un. . . |
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| A Comprehensive Comparison of 4 70mm Binoculars
[User Review] | 02/01/03 | by Ed Zarenski
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| | Recently, I have received several emails from people that have read my Comprehensive 4way Feb 2003 article. They have questions about the newer version of . . . |
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| Oberwerk 15 x 70 Vs Orion Giant 16 x 80
[User Review] | 04/25/03 | by Ed Zarenski
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| | I have been in the market for a new pair of binoculars for a while now. Over a period of 4-5 months I read as many reviews as I could on binoculars in the . . . |
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| Comparison of Seven Moderate Priced 16-20mm Eyepieces
[User Review] | 08/21/03 | by Ed Zarenski
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| | People are always looking to improve their equipment choices. Sometimes it turns out that improving choices doesn’t necessarily mean costing more. I often . . . |
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| Celestron 7.5mm Ultima and Tele Vue 8mm Radian
[User Review] | 04/17/03 | by Ed Zarenski
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| | The Celestron 7.5mm Ultima is an excellent high-powered eyepiece. In my 1250mm 5" SCT, I get 167x with a 17' True field of view. In my 1200mm 6" refractor,. . . |
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| How To Measure TFOV Of Binoculars
[How To] | 04/17/03 | by Ed Zarenski
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| | TFOV is how much an area of sky you can see at once. FOV is measured in degrees. From horizon to horizon is 180 degrees. Human eyes can take in about 50° t. . . |
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| 4 Binocular Observing Report
[Article] | 04/16/03 | by Ed Zarenski
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| | This is a list of the objects viewed for detail during the hours of comparing the Orion Ultraview 10 x 50, the Oberwerk 15 x 70 and the Orion Giant 16 x 80. . . |
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| Kids: The study of the sky and celestial bodies
[Article] | 04/17/03 | by Ed Zarenski
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| | Our galaxy is called the MILKY WAY. There are billions of stars in the Milky Way. Sometimes when you look up at the night sky you can see the hazy light of. . . |
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| Kids: Master Doc 01-09
[Article] | 04/17/03 | by Ed Zarenski
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| | Kids: Master Doc 01-09. . . |
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| Kids: Maps
[Article] | 04/17/03 | by Ed Zarenski
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| Kids: Outline Doc
[Article] | 04/17/03 | by Ed Zarenski
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| | This outline describes a program I have put together for introducing children to the hobby and science of Astronomy. Generally it takes three hours to comp. . . |
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| Kids: Flyer
[Article] | 04/17/03 | by Ed Zarenski
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| | The NCMS PTO is sponsoring an Astronomy Night for everyone who is interested in learning more about our Solar
System, the Sun and it's planets, the names . . . |
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| Kids: A Complete Astronomy Presentation
[Article] | 04/17/03 | by Ed Zarenski
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| | It was a little over two years ago now that I was out in the yard one night when my son Aaron and the kids from
across the street wanted to see what I was. . . |
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| What Does It Take To See Width In The Cassini Division?
[Article] | 12/26/03 | by Ed Zarenski
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| | The Airy disk radius is measured
from the midpoint of the central diffraction disk to the minimum of the first
diffraction interspace. The central . . . |
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| Celestron CR 150 HD Refractor
[User Review] | 02/16/02 | by Ed Zarenski
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| | I agree the tripod is very shaky. The legs are the same as those on the mount for my G5, a much smaller and lighter setup. The tension on the focus dial wa. . . |
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| Celestron G5 SCT
[User Review] | 02/16/02 | by Ed Zarenski
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| | This compact little scope never ceases to amaze me. I've jostled it around in my van a few times so I've had to collimate it after those occasions. Otherwi. . . |
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| CN Report: How to Understand Binocular Performance
[CN Report] | 02/06/03 | by Ed Zarenski
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| | Do you really understand binocular performance? If you don't now, you will when you finish this review
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| CN Report: Understanding Resolution
[CN Report] | 02/08/04 | by Ed Zarenski
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| | Diffraction and The Airy Disk,
Dawes Limit & Rayleigh Criterion. . . |
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| CN Report: Limiting Magnitude in Binoculars
[CN Report] | 09/03/03 | by Ed Zarenski
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| | What exactly is the limiting magnitude of a pair of binoculars? Does it depend on the size? The magnification?
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| CN Report: Affect of Eye Pupil on Binocular Aperture
[CN Report] | 08/01/04 | by Ed Zarenski
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| | 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. . . |
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| CN Report: Nikon Action Extremes 8x40, 10x50 and 12x50
[CN Report] | 01/23/05 | by Ed Zarenski
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| | Ed Zarenski compares Nikon's Action Extreme binoculars to several competing instruments. . . |
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| CN Report: 100mm Binoculars - What Can You See?
[CN Report] | 10/15/04 | by Ed Zarenski
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| | Ed Zarenski takes a look at the relative performance of several available 100mm binoculars. . . |
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| CN Report: A Comprehensive look at Binocular Parallelogram Mounts
[CN Report] | 06/01/03 | by Ed Zarenski
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| | Are you secure in your knowledge of parallelogram mounts? If not, "professor" Ed Zaresnki will educate this in this comprehensive article
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| Plotting Summer Objects
[How To] | 04/17/03 | by Ed Zarenski
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| | In my previous "Plotting" article (see Cas-Per Area), I mentioned why I like to mark up my charts like this. It's my way of learning the sky. It prepares m. . . |
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| Plotting Deep Sky Objects
[How To] | 04/17/03 | by Ed Zarenski
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| | Many people have telescopes that are not Go To or computer driven and it is up to them to learn the sky and find objects on their own. Personally, this is . . . |
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| “Collimating” Binoculars
[How To] | 04/17/03 | by Ed Zarenski
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| | Cloudy Nights has been my primary conduit for sharing astronomical information. I am pleased to be a member of the Cloudy Nights community in that they hav. . . |
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| Short Eye Relief Eyepieces Usable with Glasses
[How To] | 04/17/03 | by Ed Zarenski
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| | I was out viewing a fairly close double star, Rasalgethi - a Her (3.0-5.4/4.6") recording the view in various eyepieces, looking for the upper and lower li. . . |
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| CN Report: 100 Binocular Deep Sky Objects
[CN Report] | 11/29/05 | by Ed Zarenski
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| | This list is organized into object gruops within areas of the sky.. . . |
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