A:AnswerWhether the eclipse glasses for over prescription glasses depends on the style of the prescription glasses. I personally wear glasses with a thin metal frame on the upper half of 2 1/4 x 1 1/2-inch lenses and the eclipse glasses fit over them. Glasses larger than these would likely not fit under the eclipse glasses.
A:AnswerThe ISO compliance for the Eclipsmart 3-piece kit is specified on the official product description webpage seen here: https://www.celestron.com/products/eclipsmart-3-piece-solar-eclipse-observing-and-imaging-kit#description
A:AnswerThe camera filter portion of the kit has a filter clear aperture of 55 mm. It is up to the user to devise how they wish to secure the filter, Tape is the usual technique. We do not have a specification on how many photographic f/stops the filter darkens the sun, but the filter is ISO certified to be safe on a camera lens. Test exposures beforehand are recommended to zero in the optimum exposure for your particular photo system. Beware that any optical camera viewfinder that does not preview through the filtered camera lens will not be filtered and a look at the sun through the viewfinder can harm your vision.
