Visual Observation with N3,8 Solar Shield

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Visual Observation with N3,8 Solar Shield

Post by tomecz » Wed May 02, 2018 12:50 pm

Dear All,

I like observing sundown. When I observe via lunt80 telescope or standard scope with Baader N5 Solar Shield, at he very sundown the view is very dark, almost black.

Then I tend to switch to standard scope or binoculars with Baader N3.8 Solar shield. The view is ok. Is it safe? Do I need additional IR/UV cut filter?

thank you!

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Re: Visual Observation with N3,8 Solar Shield

Post by Merlin66 » Thu May 03, 2018 1:04 am

If the intensity of the sun at sunset is low, then yes the ND3.8 would be OK.
It is normally recommended that a ND4 is the minimum for safe visual observing.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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