Re: ATM Experience in solar filter for amateurs

[andydtg@alpha1.phoenix.net]

J. A. Pereira wrote:

>For visual secure solar observations in Refractors, I adapted in my ocular
focus
>"sandwiched" welders # 8 filter and LPR Celestron with one # 80A (blue)
>Vernoscope filter. This result is just one excelent view blue solar image
>ideal for sunspots
>observations. Secure, no retina damage, I tested in refractors of the 60mm
>and 80mm aperture. Scheme for adapt in refractors:
>                       
>               l - welders filter # 8
>               2 - LPR filter
>               3 - Filter # 80A (blue)
>               4 - Eyepiece
>"sandwiched"  into diagonal prism.

PLEASE don't observe the sun this way, ALL of the energy is being absorbed
by these filters and there is  a great risk of one or more of the filters
breaking, thus allowing potentially eye damaging amounts of light thru.

Solar filters should always be the type that go in front of the telescope
& reject most of the energy by reflection.


Andy Saulietis / DTG Alt-Az-Fp Drive Systems
12617 Harriet Ln
Santa Fe, TX 77510 USA
409-925-8854 Voice/Fax