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- My experience with the Starizona Landing Pad
- A quick Review of the MIGHTY MAX 12V 100AH BATTERY
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- My Experience using SkyWatch for the Alphea All Sky Camera from Alcor Systems
- Astroart 7 - A Review and "How To" (Part 1)
- My experience using two 80-millimeter long-focus refractors
- GSO 8-inch TRUE CASSEGRAIN
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CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.
Oct 07 2020 12:26 PM | rekokich in Articles
The only primary evidence available to an astronomer about a very remote object consists of photometric measurements, a spectrogram, and an image which is in many cases no more than a pinpoint of light. In this article we present basic cosmological concepts and simplified mathematical methods which allow an amateur to derive from this meager data a surprising number of physical properties of distant extragalactic objects with a precision of several percent within professional results.
Oct 06 2020 07:26 PM | cookman in This Month
Highlights: Comet Journal, Martian Landers, Meteor Showers, Planet Plotting, October Moon Focus Constellations: Ursa Major, Ursa Minor, Draco, Hercules, Lyra, Cygnus, Aquila, Pegasus, Andromeda, Cepheus, Cassiopeia, Perseus, Camelopardalis
Oct 01 2020 05:00 AM | PhilH in Phil Harrington's Cosmic Challenge
On March 12, 1781, the solar system was a simple, very well-behaved place that was best summed up with the phrase "what you see is what you get." There were the Sun, the Moon, and the five planets: Mercury, Venus, Mars, Jupiter, and Saturn. Apart from a handful of moons orbiting some of the planets and the occasional faint comet that required a telescope to be seen, the entire contents of the solar system was naked-eye territory.
Sep 29 2020 12:15 PM | Chris Westland in User Reviews
I looked at HO telescopes for some time before purchasing mine. On paper, the design is elegant, and takes advantage of the 6063-T6 aluminum alloy used in all of the telescope’s components. The sandwich mirror is innovative. The upper cage looks more rigid than a flat ring, but without being too heavy. In general the HO telescopes are unique and affordable. I am a previous owner of an Obsession Classic 20", and Dave Kriege’s scope set a standard for what I was expecting from a Dobsonian telescope.
Sep 29 2020 11:57 AM | BillP in Articles
For the vast majority of my astronomical observing life, over 50 years, I have never used filters of any kind for planets or otherwise. But after half a century of reading the extraordinary claims by manufacturers and observing organizations alike about the many benefits of the various color filters on planets, I finally decided to give them a try myself to determine if what is written about them is more fact or is more fiction and hyperbole handed down over time.
Sep 27 2020 11:50 AM | Richard Bell in Articles
Here you go - Your guide to observing Mars during the Fall of 2020. A global dust storm spoiled the 2018 opposition, so let’s hope the Martian skies remain clear this Fall. Take advantage now. Do not wait until 2035! May your skies be steady and clear.
Sep 12 2020 12:28 PM | cookman in This Month
Highlights: Comet Journal, Martian Landers, Meteor Showers, Autumnal Equinox, Planet Plotting, September Moon Focus Constellations: Bootes, Ursa Major, Ursa Minor, Draco, Corona Borealis, Hercules, Lyra, Cygnus, Aquila, Pegasus, Andromeda, Cepheus, Cassiopeia, Perseus Comet Journals
Sep 01 2020 05:00 AM | PhilH in Phil Harrington's Cosmic Challenge
As we say goodbye to summer and get ready to welcome in autumn, I thought I would offer not one, but two challenges this month to bridge the seasonal change. Both appear right next to each other in our sky but are millions of light years apart. And both require all the aperture you can throw at them to be seen.
Aug 29 2020 11:16 AM | skunkwirks in User Reviews
I would highly recommend this battery for your portable equipment, I am convinced.