Software to turn a simple 2D image of a planet or the moon into a “3D” image. Animations can be saved in AVI.

Let´s you load any type of mask and simulate the diffraction pattern for any wavelength.

You are able to save the simulation as AVI or BMP.

Registration and stacking tool using the “demons” technique for non-rigid registration (matching) of AVI frames.

Fork by one of the early Stellarium developers. It has been tailored specifically for planetarium and educator use. The emphasis is on usability, realism, feature stability, and performance.

Backward compatible with scripts for Stellarium 0.8.2 and earlier using its own StratoScript language.

Collection of programs, which may support construction, building, test and use of home built astronomical instruments.

SkyBrowser helps you to prepare your observation nights. It uses Google Sky and Skymap.org, so you can browse the sky easily. In the Google sky map hundreds of interesting objects are marked and you can bookmark those you want to observe in the night. For astrophotography you can select the focus width and then it shows a rectangle on the sky accordingly. So you have a precise preview of your astrophoto. 

With Meteor Counter, you can easily capture meteor observations in your mobile phone with an innovative "piano key" interface. As you tap the keys, Meteor Counter records critical data for each meteor: time, magnitude, latitude, and longitude, along with optional verbal annotations.