[Avodah] stars

[Eli Turkel]

Nor is it relevant what the "average person" was to understand, since
the shiur of 3 middling stars was not given to the average person, but
to experts in astronomy.  It was for the benefit of the rest of us,
who wouldn't know how to classify a star's magnitude if our lives
depended on it, that the other shiurim were given.>>

Is there is a source for this? A number of poskim have stated that to
decide when it is night it is perfectly okay to look at the sky and
see middling stars. No need to be astronomers just to have
normal eyesight

-- 
Eli Turkel