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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[–] 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?
[–] MyDrunkAccount 0 points 1 point 1 point (+1|-0) ago
As an answer to your last question, you can just run both tests (plates and new tech) simultaneously on multiple stars and then calibrate and extrapolate.
[–] Owlchemy [S] 0 points 1 point 1 point (+1|-0) ago
I didn't write the article ... sorry. But I've seen calculations of magnitude going back into ancient times. I guess it's more a matter of do you trust the calculations, and having no further info myself, I can't say.