Alexander Krutov

Got it, thanks! But the copyright notice is related to _commercial_ software, so I suppose this can not be applied to Astrarium since this is a _free_ and open-source project....

Check this lib: https://github.com/rwg0/csharpfits

See: https://manpages.ubuntu.com/manpages/bionic/man1/fitspng.1.html https://integral.physics.muni.cz/fitspng/ https://integral.physics.muni.cz/hg/fitspng/

See: XZ star catalog: http://cdsarc.u-strasbg.fr/cgi-bin/Cat?I/201 ZC star catalog http://www.stjarnhimlen.se/zc/ "Stars thar are within 6d 40' of the ecliptic (a region hereafter called "the Zodiac"), which is as far as the...

Add option to draw analemma for any object.

+ feature: different constellation lines. See Rey's constellations figures here: https://github.com/dcf21/constellation-stick-figures Combine this featue with #13 ?

See also: - https://asterisms.ru/ - http://www.astromyth.ru/Astronomy/Asterisms.htm?from=SkyMaps.Asterism - https://web.archive.org/web/20240518160453/https://milwaukeeastro.org/beginners/binocular_asterisms.asp - [Asterisms from www.astroleague.org ](https://github.com/user-attachments/files/16596190/Asterism_List_5.pdf) - [Hay-Merting asterisms catalog](https://github.com/user-attachments/files/16596116/HM-Sternmuster-Guide.pdf) - [List of Asterisms from deepsky.waarnemen.com](https://github.com/user-attachments/files/16596169/Asterisms_EN_VER4.2.pdf)

TODO: color picker enhacements: add predefined colors and allow input text in HEX

Here is an another feature that can be implemented as a part of Lunar calendar or different tool: http://www.dreistein.nl/dark.aspx It's a "darkness" calendar.

This feature will be implemented in other way, because next version will use new rendering engine. New requirement is to allow to display custom panoramic image as a horizon background.