Cartes du Ciel

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Cartes du Ciel

Screenshot of Version 3 beta 0.1.0
Developer(s)	Patrick Chevalley
Stable release	4.2.1 / 24 November 2019; 5 years ago (2019-11-24)
Preview release	4.3 beta-4358 / April 26, 2021 (2021-04-26)
Written in	Object Pascal
Operating system	Cross-platform (Microsoft Windows, macOS, Linux)
Type	planetarium Educational software
License	GPLv2
Website	Cartes du Ciel homepage

Cartes du Ciel ("CDC" and "SkyChart") is a free and open source planetarium program for Linux, macOS, and Windows.^[1] With the change to version 3, Linux has been added as a target platform, licensing has changed from freeware to GPLv2 and the project moved to a new website.

CDC includes the ability to control computerized GoTo telescope mounts, is ASCOM and INDI compliant, and supports the USNO's UCAC catalogs and ESA Gaia data,^{[citation needed]} along with numerous other catalogs and utilities.^[2]

The "red bulb" feature is useful when using software outside on a laptop on a dark night.^[3]

According to the programmer, Patrick Chevalley, it was released as freeware because "I’d rather see amateurs spend their money for a new eyepiece than for astronomy software".^[4]

Chevalley has also created a lunar atlas program, Virtual Moon Atlas, which is also free and open source software.^[5]

• Version 2 (archived)
• Version 4

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