var fDesc=new Array(); fDesc[0] = "The program calculates planetary/lunar ephemerides, orbit properties, and downloads live images of the Sun, satellite tracks and auroral ovals from the internet.
Features:

- As seen on the Sky at Night magazine's CD-ROM!
- Calculate focal ratios and the optical properties of your setup.
- Calculate planetary and lunar ephemerides, and sunrise/sunset times.
- Calculate satellite and planet orbital periods.
- Unveil the true capabilities of your telescope and eyepieces.
- Easy to use and resource-friendly.
- Download data easily from the internet."; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }