raptop 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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<egg>
UmbralRaptop: mofh: in roughly the right orbit (I have yet to write the tooling to get the phasing right, or to get the sun-synchronicity and MST of the ascending node quite right) https://imgur.com/a/Qels2xR
<galois>
title: Terra (EOS AM-1) - Album on Imgur
<egg>
cc whitequark: sun-synchronous orbit ^
<UmbralRaptop>
hrm
<egg>
UmbralRaptop: B787_300: what's with the weird solar cells (?) mounted on the spacecraft itself (not on the solar array wing) on Terra? afaict they are facing away from the Sun
<B787_300>
so yeah i am leaning towards thermal panels
<egg>
yeah that's consistent with putting it away from the sun and perpendicular to the earth too
<egg>
UmbralRaptop: should I launch Aqua or sleep
<egg>
or build Principia for 1.7.0
<egg>
or sleep
* egg
z
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<UmbralRaptop>
egg|zzz|egg: launch Aqua while Principia is building
<UmbralRaptop>
Sleep isn't real.
<egg|z|egg>
hm but building principia for a new version of KSP doesn't require long unattended build times (it's just poking at the C#)
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<mofh>
egg|z|egg: ...huh
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<_whitenotifier-5dfc>
[Principia] pleroy opened pull request #2178: Run the callback the first time the frame changes after construction - https://git.io/fjRkS
<_whitenotifier-5dfc>
[Principia] pleroy commented on issue #2176: Plotting frame inconsistent between C++ and C# - https://git.io/fjRk9
<_whitenotifier-5dfc>
[Principia] eggrobin labeled pull request #2178: Run the callback the first time the frame changes after construction - https://git.io/fjRkS
<_whitenotifier-5dfc>
[Principia] pleroy opened pull request #2179: Make sure that the FlightPlan operations return an error for an anomalous flight plan - https://git.io/fjRkh
<galois>
title: Dr Marco Langbroek on Twitter: "#Starlink objects were faint during the 1:50 CEST pass. Used binoculars. Lot of short-term brightness variation.De Starlink objecten waren zwak tijdens de 1:50 passage. Waargenomen met verrekijker. Tamelijk veel kortdurende helderheidswisselingen."
<galois>
title: Mark McCaughrean on Twitter: "Ditto. To be so much fainter than yesterday makes little sense unless they're prone to highly specular reflections off panels: have they been reoriented? 😎… https://t.co/hx3rohOMj9"
<_whitenotifier-5dfc>
[Principia] pleroy pushed 2 commits to master [+0/-0/±2] https://git.io/fjRII
<_whitenotifier-5dfc>
[Principia] pleroy 5751838 - Run the call the first time the frame changes after construction.
<_whitenotifier-5dfc>
[Principia] pleroy 70cfb93 - Merge pull request #2178 from pleroy/2176b Run the callback the first time the frame changes after construction
<_whitenotifier-5dfc>
[Principia] pleroy closed pull request #2178: Run the callback the first time the frame changes after construction - https://git.io/fjRkS
<_whitenotifier-5dfc>
[Principia] pleroy closed issue #2176: Plotting frame inconsistent between C++ and C# - https://git.io/fjBAO
<_whitenotifier-5dfc>
[Principia] eggrobin labeled pull request #2179: Make sure that the FlightPlan operations return an error for an anomalous flight plan - https://git.io/fjRkh
<galois>
title: C. G. Niederstrasser on Twitter: "I did not try to account for reflection angle (sun-satellite-observer angle). This can significantly impact the brightness of the satellite, especially any flaring. Satellite attitude and surfaces will also affect the brightness. 4/12… https://t.co/LPI8Oj9lJ5"
<_whitenotifier-5dfc>
[Principia] pleroy closed pull request #2179: Make sure that the FlightPlan operations return an error for an anomalous flight plan - https://git.io/fjRkh
<_whitenotifier-5dfc>
[Principia] pleroy pushed 3 commits to master [+0/-0/±6] https://git.io/fjRLV
<_whitenotifier-5dfc>
[Principia] pleroy a369a4e - Change ComputeSegments to consistently return the status of the first anomalous integration.
<_whitenotifier-5dfc>
[Principia] pleroy 68a5327 - A unit test doesn't hurt.
<_whitenotifier-5dfc>
[Principia] pleroy 0033beb - Merge pull request #2179 from pleroy/RemoveLast Make sure that the FlightPlan operations return an error for an anomalous flight plan
<galois>
title: “Meow” is just another name for “cat” – Origin of Alphabet
<mofh>
egg|z|egg: miaou
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<egg|z|egg>
mofh: miaou.
<egg|z|egg>
mofh: did you vote
<egg|z|egg>
mofh: also how goes the thesis
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<egg|z|egg>
hm where is my phone
<egg|z|egg>
egg
<egg|z|egg>
egg
<egg|z|egg>
egg
<egg|cell|egg>
Egg.
<egg|z|egg>
mofh: meow
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<mofh>
egg|z|egg: yes, i did vote (surprisingly not too bad for a vote from out-of-the-country, i'm used to those being hell)
<mofh>
egg|z|egg: thesis is nearing a submittable version
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<egg|z|egg>
mofh: yay, and yay
<egg|z|egg>
mofh: there was a pretty long queue here (less so than the presidential, moreso than the legislative), I think they were expecting less turnout
<egg|z|egg>
they only had 8 voting bureaus
<egg|z|egg>
s/s$/x/
<galois>
egg|z|egg meant to say: they only had 8 voting bureaux
<egg|z|egg>
not sure how you pluralize bureau in english but that's how you do it in french so fuck it
<egg|z|egg>
mofh: sorry, 4 not 8
<egg|z|egg>
mofh: numbered 5 .. 8
<egg|z|egg>
(no I don't know either)
<mofh>
egg|z|egg: i'm surprised there was a higher turnout for the EU elections than for the legislative ones, actually.
<mofh>
I mean I think EN does bureaus but bureaux is perfectly comprehensible so, :p
<egg|z|egg>
not sure there was a higher turnout (haven't checked), but more queue just means more turnout than foreseen
<egg|z|egg>
<mofh> egg|z|egg: ...huh << also what were you huhing at
<mofh>
egg|z|egg: sun-synchronous orbits
<egg|z|egg>
ah
<mofh>
which i should definetly stare at tonight
<mofh>
i've been rapidly getting back up to speed in riemann surfaces / diffgeo the past few days, oops.
<egg|z|egg>
should i sleep, work on an orbit analyser to make it possible to do orbit phasing in principia, or launch aqua in RSS
<egg|z|egg>
mofh: also CDDIS
<mofh>
aqua being?
<mofh>
also working on an orbit analyser sounds hard but also i'm legit surprised one doesn't exist already
<egg|z|egg>
Aqua is EOS-PM1
<egg|z|egg>
EOS-AM1 (Terra)'s friend, also has been modeled by RaiderNick
<egg|z|egg>
but with less plotting and map projection and more horrible UI in KSP
<mofh>
yeah, i'm mildly surprised that doesn't already eggsist in KSP or RSS
<mofh>
:p
<egg|z|egg>
look i only have so many hands
<mofh>
also huh, that SovietProbes pack is interesting
<mofh>
fair enough
<egg|z|egg>
USProbes too, lots of nice earth observation satellites
<egg|z|egg>
> i only have so many hands also it's highly domain-specific
<egg|z|egg>
that capderou book is all very elementary, but a lot of stuff there doesn't seem very broadly known
<egg|z|egg>
unless you work with earth observation stuff or whatnot
<mofh>
like "elementary, but not well-known" feels like a common thing in the sat field, imho.
<egg|z|egg>
mofh: for some reason 王小谦同学 seems to be familiar/working with a lot of earth observation stuff, knows AVHRR, MODIS, VIIRS, et al. by name and mentions using MODIS more than VIIRS
<mofh>
that's really interesting, since i've worked with VIIRS a bunch and barely MODIS at all
<egg|z|egg>
not only do i have a lot of chinese users, I even have competent chinese users
<egg|z|egg>
mofh: okay wtf how do you all work with satellite imagery
<mofh>
but i wonder how much of that is just which country's geostationary sats you're interfacing with
* egg|z|egg
hasn't worked with any of those and only learned about MODIS in Capderou and the others via hyperteggst links
<mofh>
since VIIRS is on Suomi-NPP and a few NOAA sats iirc
<egg|z|egg>
yeah Suomi-NPP definitely
<egg|z|egg>
not sure about NOAA? AVHRR is on a dozen NOAAs and a couple MetOps I think
<mofh>
and it's mainly Suomi-NPP that i've poked at, like i didn't even know there was a successor to Terra
<egg|z|egg>
mofh: Aqua is more of a dual to Terra than a successor
<mofh>
and yeah, AVHRR is what i downlink from GOES-16 (or would if i had a place to keep a dish installed)
<egg|z|egg>
EOS-AM vs. EOS-PM, Terra is in a morning orbit and Aqua in the A-train
<egg|z|egg>
and there's Aura too, EOS-CH, I think in the A-train as well
<egg|z|egg>
(also has a Raidernick model fwiw)
<mofh>
also "how do you all work with satellite imagery" << the answer is wanting to do short-term weather forecasting (i.e. there is a bunch of clouds here, how are they moving and how is their strength varying?)
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<egg|z|egg>
I wonder what 王小谦同学 uses that for
<egg|z|egg>
mofh: also I have been very consistently impressed by the quality of french wikipedia (usually shittier than en) when it comes to earth observation satellites as well as some space observatories
<galois>
[WIKIPEDIA] Gaofen | "Gaofen (chinois : 高分 ; pinyin : Gāofēn, haute résolution) est une famille de satellites d'observation de la Terre chinois à usage civil dont le premier exemplaire a été placé en orbite en 2013...."
<galois>
[WIKIPEDIA] Feng-Yun | "Fēngyún (chinois : 風雲|s 风云| = vents et nuages), abrégé en FY désigne l'ensemble des satellites météorologiques développés par la République populaire de Chine dont le premier lancement remonte à 1988. Elle comprend des satellites placés en orbite géostationnaire (série FY-2 à compter de 1997 et FY..."
<galois>
[WIKIPEDIA] Tropical Rainfall Measuring Mission | "Tropical Rainfall Measuring Mission (en français Mission de mesure des précipitations tropicales), en abrégé TRMM, est la première mission spatiale conjointe des agences spatiales américaine (NASA) et japonaise (NASDA puis JAXA). Son objectif est d'étudier les précipitations tropicales et subtropicales..."
<galois>
[WIKIPEDIA] TRACE | "TRACE (Transition Region And Coronal Explorer) est un télescope spatial développé par le Centre de vol spatial Goddard, établissement de la NASA, avec pour objectif de réaliser des photos de la couronne et de Région de transition du Soleil avec une résolution angulaire et temporelle élevée. Le télescope..."
<galois>
title: TRACE — Wikipédia
<mofh>
egg|z|egg: huh, these are surprisingly good (at least from what i can gather, my french is still not perfecT).
<mofh>
egg|z|egg: usually yeah, it's pretty crap for anything not directly FR-related
<SilverFox>
is it possible to have a thing orbit with 0 eccentricity? like just go back and forth along a single axis just as consequence of other bodies surrounding it, such that it's not really orbiting around something, but just moving along a path like an NPC?
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