
Free rollApp account allows to access your files in read-only mode. Working with files requires creating account with rollApp and connecting cloud storage (Google Drive, Dropbox, OneDrive or Box) Stellarium is a free open-source planetarium, which can be used in different ways.Explore beauty of stars, constellations, planets, satellites and more with Stellarium! Stellarium is just one of more than 230 applications available in the cloud on rollApp. The primary software is dedicated to your computer, but you can still work with Stellarium by using it both via a web application ( ) as well as an Android application ( Stellarium Mobile). Within this second one, there are also another two ways of use, as you can have a free or premium version. Stellarium is a quite robust software, in turn, you can use it elsewhere. However, we should point out the basic difference between the computer (or alternatively Android premium) version and the web-based version. The first streaking difference, which is sometimes troublesome is no option to change your horizon. Since the main Stellarium program allows you to play with the horizon by changing the existing ones or providing your own horizon patterns, sometimes really useful for checking the rises or sets of celestial objects from the given location, the Stellarium web doesn’t have this option at all.

Unlike the horizon, there might be other important things not working correctly in the Stellarium web. Some of the users pointed out the corrupted option of saving the selected location. It’s the problem, which personally wasn’t applied to me, although I can admit, that the location selection in this application is really poor. The location selection tool is based on the Leaflet OpenStreetMap interface, which enables us to find the place by address. It’s a convenient option for sure unless you don’t know the cities in the country or area you want to check. The map canvas shows the place names in local languages (and alphabets), which might be inconvenient (Pic. 1 The location search tool in Stellarium-web has deprived the place name translator.

In turn, we are getting the names in local languages and alphabets, making our selection difficult. There should be an option for selecting the place by clicking somewhere instead of selecting an address.
