UmbralRaptor changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf
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<galois>
title: Arsenio Dev on Twitter: "Hello and welcome to Missile Engineering 101, please take notes on today's presentation of the basics of guidance… "
<galois>
title: astro-ph-leaks on Twitter: "it is within the realm of possibility that a decent fraction of our community might not actually care about halting climate change."
<whitequark>
why does libc include bessel functions
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<B787_300>
UmbralRaptop: what community would that be?
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<UmbralRaptop>
Unsure, but given that AAS 235 requires flying to Hawaii…
* UmbralRaptop
steals a 6.5 m telescope
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<raptop>
oh, no. we have a crank in astrocoffee
<raptop>
Apparently not trusting in the measurements that neutrinos have mass
<raptop>
Also the discussion suggests that people are iffy on how 0 K works
<UmbralRaptop>
Hrm. One of these design studies wants 4-6 6 m telescopes (half in north, half in south), but eggspects 2x6 m in north and 4x4 m in the south.
<UmbralRaptop>
By my count, the entirety of scopes between 4.5 and 7.9 m in diameter: MMT (N), Magellan 1&2 (S), ВТА-6 (N), LZT (N, probably dead), Hale (N, lolpalomar), LAMOST (N, may present political problems)
<UmbralRaptop>
8-13 m ones are more common o_O
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<SilverFox>
doesnt the size of disc change the focal point and resolution?
<SilverFox>
bigger ones having further focal points
<UmbralRaptop>
s/13/12/
<galois>
UmbralRaptop meant to say: 8-12 m ones are more common o_O
<UmbralRaptop>
SilverFox: all other things being equal with no thermal or atmospheric considerations, yes
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<UmbralRaptop>
In reality, the atmosphere makes getting below 1 arcsecond hard, and below ~0.5 entirely dependent on adaptive optics
<UmbralRaptop>
You can also design for different focal ratios, and the big telescopes tend to be very fast. (f/4.0 at most)
<SilverFox>
i mean, you want quicker to avoid smearing right?
<UmbralRaptop>
Eh, good tracking can solve that.
<SilverFox>
fair enough
<SilverFox>
so if you have tracking to compensate wouldnt you want longer exposures so you see more stuff?
<UmbralRaptop>
There's a reason all professional scopes used equatorial mounts until well into the 1970s
<UmbralRaptop>
And yeah, longer exposures help with seeing fainter objects
<SilverFox>
yeah see, im something of a scientist myself