Solar foil

I purchased recently some solar foil; it's the best way to observe the sun safely : ocular solar filter are just unsafe, because of the high temperatures it receives by all the concentrated sunlight in your telescope. Solar projection is rather awkward to take pictures.

Solar foil reduces the sunlight to 0.000 01 percent of its strength, which gives nice pictures like the inset here. Unfortunately the sun surface is quite boring the last days : not a single tiny sunspot in sight.