Chloe is built in 3 levels :
1 - Just for the fun, all the years are supposed to create surprising tabs.
2 - is for education, displaying the full flat orbit and displaying the current star orbit relative to the eight planets.
3 - "scientist level" displays computed data and star positions data too.
All data are coming from NASA ephemeris.
Chloe save the images with a black background for seeing it on the screen and creates a white background image for printing.
It is possible to select the type of the asteroid and/or the staring date for the observation.