Somewhere between 1000mm and 2000mm for 35mm format.
The mylar image was taken through a Celestron 8" sct, i.e. 2000mm focal length, while the black polymer image was taken through a Celestron 102mm refractor with 1000mm focal length.
IR filter? :think:
I have one of those "eclipse viewing" visors. One way I've seen on the news is using a piece of completely overexposed and developed film strip.
I'm thinking of trying the shadow casting, a la camera obscura method.
:bigeyes: :bigeyes: :bigeyes:
Aiyohhh! Then I can forget about taking photos already la... my longest lens is about 10% of that focal length!!! :cry:
The celestron is a telescope? You own it or rent? Where can I rent or use telescopes and can I mount my dSLR on them to take photos??
Thanks.
:bigeyes: :bigeyes: :bigeyes:
Aiyohhh! Then I can forget about taking photos already la... my longest lens is about 10% of that focal length!!! :cry:
The celestron is a telescope? You own it or rent? Where can I rent or use telescopes and can I mount my dSLR on them to take photos??
Thanks.