Solar filter construction for sun observation:

Below a example how to construct a solar filter for the 6 inch GSO RC telescope using the Baader planetarium solar filter film:

The bases is a square piece of plywood with a round hole. The Baader film is clamped on it with pieces of wood and M4 bolts. The two extra bolts are mounted for protection covers.
The sun finder is made with two pieces wood, the first has a hole of 3mm, the second has a simple cross mark.

The setup before additional aluminium folie was installed:

Note on the photos below the additional aluminium foil glued on the wood to prevent heating of the wooden construction and possibile poor seeing.


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Last update 2016