Monday, July 25, 2011

Celestia, Your gateway to the stars

I have been using Celestia since the beginning of the decade.

It is an excellent tool for letting you take a 3d look at the universe.

This is what the creator(s) of Celestia have to say about the program:

"Welcome to Celestia
... The free space simulation that lets you explore our universe in three dimensions. Celestia runs on Windows, Linux, and Mac OS X.

Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy.
All movement in Celestia is seamless; the exponential zoom feature lets you explore space across a huge range of scales, from galaxy clusters down to spacecraft only a few meters across. A 'point-and-goto' interface makes it simple to navigate through the universe to the object you want to visit.

Celestia is expandable. Celestia comes with a large catalog of stars, galaxies, planets, moons, asteroids, comets, and spacecraft. If that's not enough, you can download dozens of easy to install add-ons with more objects."

Here are some of the pictures I have taken from my own Celestia usage:

ISS coming over the sunrise of Earth

Mars Odyssey overlooking Mars

Neptune and it's moon Proteus aligned together and facing the Sun.

I personally like the verbose information option, and I like to use the ] key to make as many stars visible as possible, although for the images here I didn't, to keep them from being overly bright.

If you are interested in this program for Windows, it is available at the Celestia website, under the download tab, which is available here:

If you would want the program for Ubuntu, then I suggest using synaptic package manager.

You will want celestia-gnome, celestia-common and I also suggest celestia-common-nonfree, or some planets and the moon will have no texture. (I.E. Mars will be a simple colored sphere.)

For other versions of Linux and Mac OS X, the Celestia website can get you started on the right path, if you don't have a package manager for your distro, or if your distro doesn't have the package available yet.

I personally put a copy onto cd and gave it to my old high school, It's a great way to get kids interested in astronomy.

Saturday, July 2, 2011

Creating ISO images in Ubuntu

I have been looking for a tool for a while that would allow me to create,
open and edit ISO's on the fly as I saw fit.

I am still looking for this program, but I accidentally stumbled upon the best ISO creator I have seen yet for Ubuntu.

It's simple, already installed Brasero.

I don't burn CDs, or rip audio files from them, so I haven't really messed with Brasero until now.

It doesn't edit or open ISO files, just so I don't confuse the matter.

To make an ISO using Brasero, first you must choose "Data Project" from the Brasero main screen.

If there is no blank CD in the drive, then Brasero might have chosen on the very bottom 'Image File: "/home/(your user name)/brasero.iso"'

If this is the case, then all you have to do is drag the files you want onto Brasero, and then choose burn.

If it doesn't give you the "Image File:" option on the bottom, you can click the down arrow to the right of the bottom field to choose the option you want.

(P.S. the "/home/(your user name)/brasero.iso" will change to whatever username you have chosen upon installation of Ubuntu, so mine would look like this: /home/denny/brasero.iso.)