Cartes du Ciel is free software released under the terms of the
GNU General Public License
The star can now be displayed using a parametric method to achieve the best rendering for your screen or personal preference.
You can choose for big or small stars, high or low contrast between magnitude, colorful or gray scale.
Four default setting can be used as a starting point.
Use the Configuration - Display to change this setting.
This method use anti-alias to obtain sub-pixel accuraty for the position of the star.
Thank's to John Valentine for is contribution to this function.
The program can now display any number of picture in FITS format with WCS information.
Three options are available :
If not already done, please install the MySQL package and go to Setup - Configuration - System to create a database. The default options must be right for a new MySQL installation, just press the “Create Database” button.
After installation of the pictures go to Setup - Configuration - Pictures - Object then click “Scan Directory” to register the images in the program.
Repeat this operation after every change to the picture folder.
The program use now a more accurate display for the multiple stars.
When the chart scale is sufficient to seperate the component, the line are draw to the exact position of the second component.
For multiple stars each pair referenced in the WDS catalog is represented.
It is necessary to update the WDS catalog to the latest version that contain much improved star position to take advantage of this function.