"orrerymaker" ha scritto nel messaggio
...


Bought from David Hinds it just states 'Baader AstroSolar' on the pack, in
the text it states a 99.999% reduction of intensity.

According to Baader's website
http://www.baader-planetarium.com/sofifolie/sofi_start_e.htm it is a ND
5.0

As cameras (and
lenses) can vary I always run a test film when using new filters. There is
quite a bit of lattitude with print film, but even so it is always safer
to bracket by 2 stops. There was light cloud, and it was 10 am this
morning (in UK) , so, as you say, probably 1/1000 in Turkey?

Well, Espenak's table should be "location insensitive", while it should be
affected by sky transparency, fog, mist, haze, clouds other than Sun's
height in the sky. All conditions that are quite difficult to replicate
correctly...hence the need for bracketing...

All the best,

--
---
Beta Persei
45° 35' N
08° 51' E

remove "_nospam" to reply