Venus observer: worried about what I saw

Mike Dworetsky wrote:
I noticed on the ITN news yesterday in Transit of Venus reports, one
shot of an amateur at Greenwich using a small reflector with no solar
filter on the front.

After 4th contact yesterday, I took the opportunity to demonstrate (with
a piece of black fabric) why one should not use an unfiltered telescope.
for direct obs of the Sun. Black is good -- the smoke appears almost
instantaneously! g

Best,
Stephen

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