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
<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: Interface Region Imaging Spectrograph — Wikipédia
<galois>
[WIKIPEDIA] Interface Region Imaging Spectrograph | "L'Interface Region Imaging Spectrograph ou IRIS est un télescope spatial de l'agence spatiale américaine de la NASA qui doit observer les émissions du Soleil en ultraviolet proche et lointain. Le satellite a été placé en orbite le 28 juin 2013 par un lanceur Pegasus pour une mission de deux ans. Ce petit..."
<egg>
!acr -add:IRIS Interface Region Imaging Spectrograph
<galois>
Definition added!
* egg
meows at UmbralRaptop
<UmbralRaptop>
!acr -add:RBSP Radiation Belt Storm Probes
<galois>
Definition added!
<egg|zzz|egg>
!acr -add:ACE Advanced Composition Explorer
<egg|work|egg>
500km; 97.3° inclination; sun synchronous 6am/6pm
<egg|work|egg>
UmbralRaptop: I wonder how to model the constraints of a survey in KSP
<egg|work|egg>
the annoying thing is that orientation isn't a thing so you can't just eventually point at everything
<egg|work|egg>
the set of places where you can't point should eventually cover the entire sky? but that will happen pretty quickly no matter what you do
<UmbralRaptop>
I think so.
<egg|work|egg>
then again maybe if you combine that with e.g. the IR constraints it becomes interesting
<UmbralRaptop>
But, surveys are often limited in area (Kepler, WFIRST, even TESS to some degree)
<galois>
title: Gabriel N. U. on Twitter: "I was not going to show you my full recon of the paravian dinosaur Anchiornis huxleyi until it appears in my in-prep book. However, I licensed it and it will be published soon in a magazine article (along with others recons), so here it is #paleoart #sciart #FossilFriday… https://t.co/heNb3qinOP"
egg|zzz|egg has joined #kspacademia
<egg|zzz|egg>
Raptop: if you have some input on eggsoplanetology missions I think they would be useful at https://discord.gg/aSYcRu
<galois>
title: KSP-RO
<Raptop>
Your account must be at least 5 minutes old to send messages to this server
<egg|zzz|egg>
Raptop: hm
<egg|zzz|egg>
Raptop: hopefully the server didn't forget the first digit of the julian date
<Raptop>
hah
<Raptop>
hrm, I should change my avatar
egg|zzz|egg has quit [Ping timeout: 190 seconds]
egg|zzz|egg has joined #kspacademia
egg|zzz|egg has quit [Ping timeout: 206 seconds]
egg|zzz|egg has joined #kspacademia
<egg>
Raptop: galaxy!
* egg
pets Raptop
* Raptop
was sort of hoping for a birb (say, Utsuho Reiuji), but didn't have anything that would work well nearby
egg|zzz|egg has quit [Ping timeout: 189 seconds]
egg|zzz|egg has joined #kspacademia
<egg>
!wpn Raptop
* galois
gives Raptop a fluorine bayonette with a woomera attachment
<Raptop>
uh
Raptop has quit [Ping timeout: 183 seconds]
UmbralRaptop has joined #kspacademia
UmbralRaptor has joined #kspacademia
UmbralRaptop has quit [Ping timeout: 198 seconds]
<UmbralRaptor>
Why is discord's night mode a mid gray instead of a proper black?
<galois>
title: Transiting Exoplanet Survey Satellite - Wikipedia
<UmbralRaptor>
TESS isn't *quite* all sky, but most of that is not bothering with the eggliptic
<galois>
[WIKIPEDIA] Transiting Exoplanet Survey Satellite#/media/File:TESS science sector suddivision.jpg | "The Transiting Exoplanet Survey Satellite (TESS) is a space telescope for NASA's Explorers program, designed to search for exoplanets using the transit method in an area 400 times larger than that covered by the Kepler mission. It was launched on April 18, 2018 atop a Falcon 9 rocket. During its 2-year..."
<UmbralRaptor>
IIRC, TESS's orbit has some advantage in terms of imaging a seggtor for a month at a time.
<egg|zzz|egg>
yeah, high eggscentricity means long eggsposures
<galois>
[WIKIPEDIA] Infrared Space Observatory#Optical telescope | "The Infrared Space Observatory (ISO) was a space telescope for infrared light designed and operated by the European Space Agency (ESA), in cooperation with ISAS (part of JAXA as of 2003) and NASA. The ISO was designed to study infrared light at wavelengths of 2.5 to 240 micrometres and operated from..."
<galois>
title: Infrared Space Observatory - Wikipedia
<egg|zzz|egg>
ISO always pointed between 60 and 120 degrees away from the Sun and it never pointed closer than 77 degrees to Earth, 24 degrees to the Moon or closer than 7 degrees to Jupiter.
<egg|zzz|egg>
> between 60 and 120 degrees away from the Sun
<egg|zzz|egg>
UmbralRaptor: so it seems there's a consistent pattern that "directly away from the sun is bad"? see also JWST
<UmbralRaptor>
oh, wow. IRAS had abysmal resolution
<galois>
[WIKIPEDIA] IRAS#/media/File:IRAS all-sky infrared survey.jpg | "The Infrared Astronomical Satellite (IRAS) was the first-ever space telescope to perform a survey of the entire night sky at infrared wavelengths.Launched on 25 January 1983, its mission lasted ten months. The telescope was a joint project of the United States (NASA), the Netherlands (NIVR), and the..."
<egg|zzz|egg>
UmbralRaptor: also what's the difference between, e.g., IRAS, ISO, Herschel, that ceased observations when they ran out of coolant, and Spitzer or WISE that went Spitzer Warm or NEOWISE
<UmbralRaptor>
egg|zzz|egg: I'd say wavelengths, but I'd eggspect ISO to be in that range
<egg|zzz|egg>
Infrared Camera (ISOCAM) – A high-resolution camera covering 2.5 to 17 micrometre wavelength
<UmbralRaptor>
Spitzer and WISE use ~3.4 μm and ~4.5 μm only these days
<egg|zzz|egg>
the rest of the ISO instruments is a photopolarimeter and spectrometers
<egg|zzz|egg>
s/ec/egg/
<galois>
egg|zzz|egg meant to say: the rest of the ISO instruments is a photopolarimeter and speggtrometers
<UmbralRaptor>
hrm. 2.5-5 μm channel with a bunch of filters
<UmbralRaptor>
(also, 32x32 array? ow)
<UmbralRaptor>
I don't know. Is ESA against the sort of greatly eggstended missions that happen at NASA?
<egg|zzz|egg>
UmbralRaptor: *points at XMM*
<UmbralRaptor>
hrm
<egg|zzz|egg>
Planned: 10 years[1] Elapsed: 19 years, 5 months, 6 days
* UmbralRaptor
wonders what the fuel situation was like
<egg|zzz|egg>
UmbralRaptor: also is XMM a slightly more eggscentric CXO in a trenchcoat
<UmbralRaptor>
wolter trenchcoat
<egg|zzz|egg>
phased [1; -1; 2] instead of [0;+23; 61] too
<egg|zzz|egg>
INTEGRAL is [0; +1; 3]
<egg|zzz|egg>
UmbralRaptor: does ESA like supersynchronous high eggscentric orbits for some reason
<egg|zzz|egg>
INTEGRAL?
<galois>
INTEGRAL: INTErnational Gamma-Ray Astrophysics Laboratory
<egg|zzz|egg>
wait did INTEGRAL change phasing since Capderou published his book
<egg|zzz|egg>
the book gives [0; +1; 3], but iximeow gives [0; +3; 8] with the latest NORAD daata
<iximeow>
[0; +3; 8]
<iximeow>
^ expected expression
<UmbralRaptor>
(Iximeow 2019)
<egg|zzz|egg>
iximeow: phasing triplet
<egg|zzz|egg>
iximeow: number of satellite revolutions / number of earth revolutions = 0+3/8
<iximeow>
ooh
<egg|zzz|egg>
e.g. a synchronous orbit is denoted [1; 0; 1]