egg changed the topic of #kspacademia to: https://git.io/JqLs2 | Dogs are cats. Spiders are cat interferometers. | 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 | Logs: https://esper.irclog.whitequark.org/kspacademia
<raptop> I swear, at least 95% of "learning a foreign language is easy" articles are about how someone fluent in French and with a working knowledge of Spanish had a great time picking up Italian
<galois> title: KerbalismContracts/ModuleImager.cs at 6c6fe30e20b96d473cfb1c9295e6d04c9ff875c4 · eggrobin/KerbalismContracts · GitHub
<egg|anbo|egg__> also does fire detection fit in MIR or NIR by this definition
<egg|anbo|egg__> well, NIROPS is supposed to be N, but,
<egg|anbo|egg__> NIROPS?
<galois> NIROPS: National InfraRed OPerationS
<egg|anbo|egg__> ah wait no, it is not NIR in that sense, so that is fine
<egg|anbo|egg__> MIROPS,
<raptop> egg|anbo|egg__: how about 1.6 µm for NIR (H band), and 200 µm for FIR?
* raptop looks over those some more
<egg|anbo|egg__> but then NIR and MIR get uncomfortably close together
<raptop> Not sure how I feel about 10 µm for MIR, but itś a fuzzy place
<raptop> 1 µm is visible in an I or Z band trenchcoat
<egg|anbo|egg__> well, unless I ditch the concept of reflective NIR entirely, I need an emissive band not much farther than 10 μm (consider VIIRS wavelengths)
<egg|anbo|egg__> alternatively I call VIIRS Vis + NIR, and then MIR is, uh, something else?
<raptop> Hrm, the blue cutoff for Johnson U is 3013 Å (Bessel 2005, see table 1)
<raptop> ah
<raptop> Right, also weather sat IR wavelengths might well tend to ones that I'd avoid (because of water absorption)
<egg|anbo|egg__> yes, we should get rid of this pesky atmosphere
<raptop> Given that the atmosphere has directly tried to damage the GMU telescope twice in the past 2 weeks or so, I very much agree
<raptop> " Galaxy Evolution Explorer (GALEX) satellite in its far-ultraviolet (FUV; λeff = 1516 Å) and near-ultraviolet (NUV; λeff = 2267 Å) bands."
<raptop> yeah, the UV band you're using is pretty far into the UV (EUV?)
<raptop> Which, for solar observing, is fair
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<raptop> !8 Am I real?
<galois> raptop: yes
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* raptop feels silly for not realizing that numbering was important https://upload.wikimedia.org/wikipedia/commons/a/a1/WFF_sounding_rockets.jpg
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<egg|anbo|egg_> UmbralRaptop: EUV is a different animal entirely, that is where you start needing weyard opticks
<egg|anbo|egg_> GALEX is plain ol’ RCT
<raptop> Normal UV, where photons are photons and not bullets
<egg|anbo|egg_> I guess the question is whether there is a point to distinguishing MIR and NIR
<raptop> hm... X-ray, optical, NIR, FIR, radio?
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<raptop> !8 Is Elon going to be the official representation of ASD now?
<galois> raptop: yes
<raptop> I guess that's better than Sheldon?
<galois> title: Estimation of total mortality due to COVID-19 | Institute for Health Metrics and Evaluation
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<egg|anbo|egg_> raptop: well, there definitely is a point to distinguishing EUV/X-ray from NUV, because very different opticks; and NUV is not the same as visible, because atmosphere (not going to do remote sensing with GALEX)
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<egg|anbo|egg_> whitequark: how are the cats
* egg|anbo|egg_ meows at ANBOcat
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<egg|anbo|egg__> raptop: maybe merging VisNIR? Both somewhat usable through the atmosphere, both either reflective or situationally emissive (fires, lämps) in remote sensing (in contrast with emissive MIR), largely the same opticks
<egg|anbo|egg__> !wpn smkz
* galois gives smkz an engine
<egg|anbo|egg__> ah, for her B-52
<egg|anbo|egg__> but is it the RR or the P&W
<egg|anbo|egg__> (the Mirage IV is pretty cool admittedly)
<egg|anbo|egg__> I think it is the first one to do the fuel trimming thing?
<egg|anbo|egg__> Hm, VisNIR means Spitzer warm might get hard to distinguish from any old visible space telescope though
<UmbralRaptop> IRAC in particular isn't that different
<egg|anbo|egg__> UmbralRaptop: what prevents Hubble/KH-11 from doing NIR?
<egg|anbo|egg__> ah it does
<UmbralRaptop> Hubble *does* NIR since sometime in the 90s (out to 1.6 μm)
<egg|anbo|egg__> yeah so VisNIR really makes a lot of sense
<UmbralRaptop> But, cooling and different CCD design to be IR sensitive
<UmbralRaptop> are also, NGRST's mirrors
<egg|anbo|egg__> right, coatings matter
<egg|anbo|egg__> not going to do visible with gold
<egg|anbo|egg__> UmbralRaptop: but does cooling matter for NIR vs. visible to an extent that affects mission design?
<raptop> For ~3-23 μm (WISE, Spitzer's IRAC instrument), yes. For something like HST, not really? (Just include a cooling module with the instrument)
<egg|anbo|egg__> raptop: right, but 3–23 sounds more like the 10ish range (e.g. emissive for remote sensing), which I called « MIR »
<egg|anbo|egg__> CIE IR-C, whereas the NIR stuff would be IR-A/B
<egg|anbo|egg__> well, the shorter range of IR-C, because FIR is actively different
<egg|anbo|egg__> ISO has MIR for 3–50
<egg|anbo|egg__> ISO the organization, not the telescope
<egg|anbo|egg__> raptop: oh right that 66 nm was me reading the FWHM as the wavelength; derp
<raptop> ah,
<egg|anbo|egg__> 365 nm seems a bit long though, in comparison to that GALEX stuff
<raptop> well, yes. The blue cutoff for Johnson U is infamously defined by the atmosphere instead of the filter
<raptop> Or at least was initially, it might have beenf ixed
<raptop> *fixed
<raptop> (...ixied?)
<SnoopJ> !wpn -add:wpn cutoff
<galois> Added wpn 'cutoff'
<egg|anbo|egg__> even HST, STIS apparently goes down to 115 ?
<egg|anbo|egg__> I guess 200 nm is a nice round number for UV
<galois> title: Nuthatch – bird and moon
<egg|anbo|egg__> raptop: I wonder whether there is any use for VisNIR with solar elevation between, say, 15° and -15°; below that you have night-time imaging, which is a thing, above that daytime, but I guess there it is just a useless mess?
<raptop> I'm not sure where prefered sun elevation is for terrain relief
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<raptop> !8 Does our telescope need a rain gauge inside the dome?
<galois> raptop: no
<raptop> (which triggers an auto-shutdown if it ever reads more than 0)
<galois> title: KerbalismContracts/ModuleImager.cs at baba9dd215daf2913f4eb0e3360d3ffed746bf3c · eggrobin/KerbalismContracts · GitHub
<raptop> seems reasonable
<mofh> 00:56 <@raptop> mofh: are the estimates in table 1 trustworthy?
<mofh> so the IHME data honestly appears to me to be quite an overestimate for many places.
<mofh> sure, the USA number of ~575k is an undercount, but every other source adding up excess mortality doesn't get anywhere near 900k. 800k? sure. but 900 is just... ehh.
<mofh> i'll take a look at the models they have again once this headache dissipates
<raptop> ah, thanks
<galois> title: Thoughts on IHME “Estimation of total mortality due to COVID-19”
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<egg|anbo|egg__> !wpn whitequark
* galois gives whitequark a polynomial