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
* raptop
stares at 米国
<raptop>
I could understand if we were called メイズ国 or something, but *rice*?
<galois>
egg|anbo|egg: Your options: sleep, don’t. My choice: sleep
<egg|anbo|egg>
;choose sleep|don’t
<kmath>
egg|anbo|egg: sleep
<egg|anbo|egg>
ok fine
<raptop>
You should sleep
<SnoopJeDi>
+1
<egg|anbo|egg>
hmm I am bad at that apparently
* raptop
wouldn't be surprised if everyone in this channel is bad at sleep
WeylandsWings has quit [Read error: Connection reset by peer]
egg|anbo|egg has quit [Remote host closed the connection]
WeylandsWings has joined #kspacademia
<WeylandsWings>
raptop: what is sleep
<raptop>
WeylandsWings: you know that thing that happens about 1/3 of the time where you're paralyzed and often having very vivid and interactive hallucinations?
<WeylandsWings>
1/3 of the time is a stretch and what are those vivid and interactive things you talk about
<WeylandsWings>
like seriously i think i am in a very small minority, but i am lucky if i remember a dream every like year or so
<raptop>
hrm
<SnoopJeDi>
I used to be like that and started having more
<SnoopJeDi>
freewriting each morning probably helped me learn how to boot my brain a little quicker and I suspect that might be why
egg|anbo|egg has joined #kspacademia
egg|anbo|egg_ has quit [Ping timeout: 190 seconds]
<WeylandsWings>
UmbralRaptor: a thought i had last night before sleep happened, how do RV astronomers take out the effects of the earths movement around the sun and the suns movement relative to the star they are trying to get a measurement from?
<WeylandsWings>
raptop: did you see my question about RV stuff?
<raptop>
WeylandsWings: I did not
<WeylandsWings>
a thought i had last night before sleep happened, how do RV astronomers take out the effects of the earths movement around the sun and the suns movement relative to the star they are trying to get a measurement from?
<raptop>
I'd want to grep data reduction pipelines for "barycentric corrections" (that's the standard term)
<raptop>
Earth's movement is well known (but gets annoying for longer exposures, since it apparently changes meaningfully over the course of a night)
<raptop>
Similiarly, the rough RVs of these stars are well known, and for planets we're looking for a change rather than that constant
<raptop>
(I guess not similiarly beyond often being well known)
<WeylandsWings>
I guess i didnt think that you were only looking for the change
<WeylandsWings>
also how does it work when the plane of the exoplanets orbit around the star is perpendicular to the imager? wouldnt there not be a shift in the spectral lines because the relative motion wouldnt be towards/away from the the imager? or do i miss understand RV stuff?
<raptop>
It's of value for seperating stellar (and, er, planetary lines for transit spectroscopy) from telluric ones (and gas cell lines), but...
egg|anbo|egg_ has quit [Remote host closed the connection]
<raptop>
Supposedly Gaia will at some point find a bunch of vaguely distant giant planets via astrometry. Though more various m-dwarfs that have been missed
<WeylandsWings>
could datamining other sources like TESS or kepler help astronometry or is their resolution not fine enough
<raptop>
TESS' pixels are definitely too low resolution. (Like, there's a lot of ground based follow-up that finds things like blends and background egglipsing binaries)
* raptop
blinks
<raptop>
"Each camera forms a 24x24 un-vignetted image on the detector in its focal plane. The lens assemblies were designed for consistent image spot size across the field-of-view (FOV) and to produce undersampled images similar to Kepler. Operating at nominal focus and a flight temperature of -75 degrees C, the 50% ensquared-energy half-width is 15 micron averaged over the FOV. This corresponds to 1 detector
<raptop>
pixel or 21 arcseconds (approx. 0.35 arcmin) on sky."
<_whitenotifier-d13c>
[Principia] DarthPointer edited issue #2608: Make navball+trajectory plotting frame different combinations possible - https://git.io/JfbFS