Yeah I agree
Jim,
Since I actually got the steep skirted IR filter and tried it I now agree with you and Max/Robert (post above yours).
And as I stated on the other forum if it works fine (same with the upcoming 808nm laser for the lasing experiment) and hey I'm out a total of $60 which for 2 experiments isn't bad.
I do have an article from the California Mining Journal that you saw posted here and the other forum where IR between 700-900nm is valuable for Geological Remote Sensing which has been done for decades now so will invest in 3 separate bandpass filters for each (700nm,800nm+900nm)but for treasure hunting of NO value so far as I can tell until proven by yours truly. I am a part time gold placer miner and prospector so the above article will be yet another tool in my Geological tool chest.
Sorry I couldn't help you treasure hunters,
Randy
Jim,
Since I actually got the steep skirted IR filter and tried it I now agree with you and Max/Robert (post above yours).
And as I stated on the other forum if it works fine (same with the upcoming 808nm laser for the lasing experiment) and hey I'm out a total of $60 which for 2 experiments isn't bad.
I do have an article from the California Mining Journal that you saw posted here and the other forum where IR between 700-900nm is valuable for Geological Remote Sensing which has been done for decades now so will invest in 3 separate bandpass filters for each (700nm,800nm+900nm)but for treasure hunting of NO value so far as I can tell until proven by yours truly. I am a part time gold placer miner and prospector so the above article will be yet another tool in my Geological tool chest.
Sorry I couldn't help you treasure hunters,
Randy




But people how buy that stuff or belive in such impossible-to-be-true claims... are scam-vulnerable... the sellers/authors use that weakness of scientific background and old-good-simple-common-sense to drive them to buy products or books.

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