I have a pair of Nippon Kogaku (later Nikon) 9 by 35's that my Dad bought in the early 1950's when he was stationed in Japan after WW2. I never though much about them until lately when I started having an interest in astronomy. Last night I cleaned them up (inside and out) and looked at the sky. HOLY SMOKES! I was so cool, much better than I expected! It was still not 100% dark and I looked up at Vega and saw probably 75 stars! One was clearly a double star which I later found out is a double double (episolon Lyra). From what I read on here, the 9 is very decent power for astronomy and the 35 although small, makes the black background darker so it strangely may help (vs. a 50mm or 60mm).
Anyway....my question: How do you think these binos compare to a modern entry level 10 by 50 such as Nikon Aculon, or even a 10 by 42 ProStaff 7S? Is it worth the spending to get modern glass and 10 power?
Edited by neutron 58, 09 July 2020 - 10:01 AM.