the accepted standard regarding the optical quality or resolving ability of astronomical spotting scopes is usually denoted by the manufacturer’s reference to the term "arc seconds".
a scope capable of 1 arc second resolving ability, can in ideal conditions define objects to 1/60th moa.
this allows potential astronomical viewers, to quite easily research and select scopes which will meet their required resolving requirements.
in view of the fact, that today there is an overlap in the optical market between outdoor/hunting/bird watching/astronomical spotting scopes/target scopes manufacturer's and suppliers etc, it would be to the advantage of all consumers, if the "arc second standard of resolution" was denoted in the specifications of all these optical instruments.
IMHO, this would prevent the genuine disappointment,frustration and expense, that many continue to find and experience today when their new rifle scope or spotting scope fails to live up to the required expectations either in the bush or on the range.
ie. what looked good when viewed in the gunshop, turns out to be "not worth 2 bob" when used elsewhere.
cheers
dave g
Spotting scope specs
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Re: Spotting scope specs
yes i allways have a chuckle when i hear someone say " it looked good and bright in the shop" .....you know the well lit shopdg wrote:the accepted standard regarding the optical quality or resolving ability of astronomical spotting scopes is usually denoted by the manufacturer’s reference to the term "arc seconds".
a scope capable of 1 arc second resolving ability, can in ideal conditions define objects to 1/60th moa.
this allows potential astronomical viewers, to quite easily research and select scopes which will meet their required resolving requirements.
in view of the fact, that today there is an overlap in the optical market between outdoor/hunting/bird watching/astronomical spotting scopes/target scopes manufacturer's and suppliers etc, it would be to the advantage of all consumers, if the "arc second standard of resolution" was denoted in the specifications of all these optical instruments.
IMHO, this would prevent the genuine disappointment,frustration and expense, that many continue to find and experience today when their new rifle scope or spotting scope fails to live up to the required expectations either in the bush or on the range.
ie. what looked good when viewed in the gunshop, turns out to be "not worth 2 bob" when used elsewhere.
cheers
dave g