Archived No Alien Megastructure: Star's Weird Dimming Likely Caused by Dust (space.com)
submitted ago by Owlchemy
Posted by: Owlchemy
Posting time: 2.9 years ago on
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Archived on: 4/4/2018 10:00:00 AM
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Archived No Alien Megastructure: Star's Weird Dimming Likely Caused by Dust (space.com)
submitted ago by Owlchemy
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[–] Rellik88 ago
How the hell do we know the brightness of a star back in 1890?
[–] Owlchemy [S] 0 points 1 point 1 point (+1|-0) ago
Same way they do it now.
[–] Rellik88 0 points 1 point 1 point (+1|-0) ago (edited ago)
So your telling me we had the know how and the precise tools need to do it in 1890?
Edit: Well I guess so,
http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit1/bright.html
I'm just curious how can we tell the data taken from the 1890's using photographic plates is accurate. How do we know the star was brighter back then if our measurements with todays tech shows it dimmer?