NASA Image of the day
- Serene Scene May 25, 2012Even in a peaceful looking scene such as this one of Saturn and its moon Tethys, the Cassini spacecraft reveals clues about how Saturn is ever-changing. Saturn's northern hemisphere still shows the scars of the huge storm that raged through much of 2011 (see PIA14905). And, day by day, the shadows cast by the rings on the planet's southern hemisphe […]
Telescopes & more
German Equatorial Mount – Part 2
The first part of this article gave an introduction of German Equatorial Mounts (GEMs) and discussed polar aligment and how it is been done. This second part of the [Read More]
A Telescope for under $100
This article is for people who are in the market for their first telescope – but have only a very limited budget (say $100) at their disposal. Some amateur astronomers [Read More]
German Equatorial Mount – Part 1
German Equatorial Mount – Shown Celestron CG4 This article explains how German Equatorial Mounts work. It consists of 2 parts: The first part provides a general [Read More]
Observing
Top 10 Night Sky Objects for Astronomy Beginners
Your first telescope has just arrived and now you can’t wait to try it out. Trust me, I remember this feeling very well. The universe is calling and it want to be [Read More]
Cosmos
Pulsars
Coming Soon - Stay Tuned Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed [Read More]
Black Holes
Gravitational distortions caused by a black hole in front of the Large Magellan cloud. [Read More]
Astrophotogallery
Astrophoto Gallery
This gallery shows astro-photos made by amateur astronomers. Clicking the images enlarges them to original size and provides information about the object and how [Read More]
Solar System
Positions of Planets
The tables offer monthly positions of the four brightest planets: Venus, Mars, Jupiter [Read More]
Voyager Explores Stagnation Region
NASA’s Voyager 1 has entered a new region between our solar system and [Read More]
Mars Express – Scientific Highlights
The following DLR article talks about measurements and scientific experiments performed [Read More]
Imaging
Astrophotography – Without a Telescope
By Ralph O. Clements When I was invited to write about this subject for Astronomysource.com, I must say I was flattered and a bit flabbergasted too, as I do not consider myself an expert on the subject, nor a writer by any means, but just a guy who likes to go out at night [Read More]
Startrails – Software
Star trails, image credit: Ralph Clements Star trail images are beautiful to look at and they are captivating because they [Read More]
Eyepiece Projection
Eyepiece projection is a great way to take detailed shoots of moon and planets. Photographed objects in these [Read More]
Astro-Imaging for $100
Is is possible to make astro-images with entry level digital point-and-shoot cameras? The answer to that question is a [Read More]






