Sonnenprojektionsschirm Hossefield Pyramid

For safety reasons you should completely remove the finder scope from the telescope when observing the Sun. Under the search term "solar finder" you can find special finders with which you can safely set up the telescope to view the Sun.

It is recommended that you use simple Huygens eyepieces for projection.

You can calculate the size of the image of the Sun in millimeters using the following formula: Sun image diameter = 0.5 x distance between the image and the focal point x the magnification.

(Stefan Taube)