Taken from software Perseus, all rights belong to the author who takes the screen (as written in Copyright file). Arranged with deep-sky objects.

Abstract from "Copyright.txt", included on installation:

4. COPYRIGHT. [...] ELItalia non rivendica il copyright sui dati utilizzati nel software, e autorizza comunque qualsiasi utilizzo dei dati forniti o generati con il software. I diritti d'autore sulle immagini o i documenti stampati generati con il software appartengono all'utente che li ha realizzati.

Translated: ELItalia release the copyright on the data used in the software, and authorizes any usage of the data supplied or generated with the software. The copyright of images or documents generated with the software belongs to the user who takes them.

I, the copyright holder of this work, hereby publish it under the following license:

This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.

You are free:

• to share – to copy, distribute and transmit the work
• to remix – to adapt the work

Under the following conditions:

• attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
• share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

https://creativecommons.org/licenses/by-sa/3.0CC BY-SA 3.0 Creative Commons Attribution-Share Alike 3.0 truetrue