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Make a couple of cardboard disks that cover the front lens with smaller circular cutouts, effectively reducing the diameter of the front elements. If you make t
by hazeii 7y ago
Make a couple of cardboard disks that cover the front lens with smaller circular cutouts, effectively reducing the diameter of the front elements. If you make the holes say half the radius, you'll reduce the light by a factor of 4 (telescopes often comes with a front lens cover that have this sort of arrangement built in, either for solar projection or for observing the mount).
Shouldn't need to say it here, but never, ever, look at the sun through binoculars or a telescope (even with filters or reducers). You won't get a second chance.
[edit] Here's a pic from the 2003 transit, taken by projecting an image of the sun onto an A4 sheet of paper, using a 90mm refractor stopped down to about 25mm (Mercury at mid-upper left, the lower blob is a sunspot).
http://hazeii.net/images/mercury_transit_2003.jpg http://hazeii.net/images/mercury_transit_2003.jpg
- penagwin 7y agoAlso same goes for non-Mirrorless Cameras as well!
- leeoniya 7y ago> Shouldn't need to say it here, but never, ever, look at the sun through binoculars or a telescope (even with filters or reducers). You won't get a second chance. i was considering this one: https://www.celestron.com/products/eclipsmart-solar-filter-6-sct https://www.celestron.com/products/eclipsmart-solar-filter-6... bad idea?
- CydeWeys 7y agoProper sun filters are fine and the best way to view the eclipse. They better be real and not knock-off, though!
- hazeii 7y agoFrom a reputable company (like Celestron) it ought to be ok. However, if anything goes wrong (filter burns through, cracks, drops out) the damage will will likely be irreversible. Think of it as the risk of standing at the wrong end of a loaded gun. Even if you avoid looking directly at the sun, it's possible to make mistakes. On a transit of Venus I was having trouble getting a telescope lined up, so without thinking I bent down to have a look through it to see where the sun was. Luckily the resultant burn made me whip my head back before my eye got to the eyepiece.