VBESTLIFE Telescopische oculaire lensfilterset van aluminiumlegering, kleurfilterset voor optische lenzen, telescopische accessoires voor 31,7 mm telescoop voor maannevel, planeet zon

basso prezzo, buone. Non ho provato il filtro per il Sole e forse non mi fido. Comprero' un vero filtro solare a tutta apertura per quello.

Très bien pour le prix

used to look at moon fantastic view /good for special effect photography and lighting effects.

Not particularly precise filters: no specs as to what wavelengths are blocked. The moon filter was OK for reducing the glare, but I'm probably going to replace it by a better one later, as with the others.The solar filter I tossed in the bin immediately. Put that in the focus of even a modest telescope, and the concentrated light will make it quite hot. If there is any minor defect, neither your telescope nor your eye are likely to survive it. There was a recall last week, which was then rescinded: the message that the filters are safe to use are highly unlikely to be true for the solar filter.To view the sun, you might perhaps use a Baader aperture solar filter (fitted to the front of your telescope): but make sure you get the right sort that's intended for visual use, and is securely fitted.

They do the job and value for money.