For the upcoming solar eclipse in march 2015 I build this screen to be able to watch the sun in a g group of people.
NEVER LOOK DIRECTLY INTO THE SUN WITH OR WITHOUT OPTICAL INSTRUMENTS!
Also be aware that even when such a screen us used the heat of the sun can cause damage to your telescope, so please use any measures to not let too much light into your telescope (usually a lens cap with a smaler opening)
Supervise your audience especially small childs!
Use the Blend file to customize for your telescope.
I added a slightly larger mounting (33mm diameter) for easy fit on some eye pieces.
Parts you need:
- carbon tube 5mm diameter
- 6 M2 bolts and nuts
- 2 M3 bolts
- M4 bolt and nut/lock nut
- screen material
cut out screen material, you may use thicker paper, I used a PVC foil, one side is matte which is good. Of course a opaque material is better but this semi transparent makes it possible to look at the image from behind.
tap the two M3 threads for the carbon tube
- assemble all :-)