i nerd sniped myself tonight and i imagine the NSA operative who is assigned to me is very confused by the increasingly erratic and frustrated google searches for HOW DO I CALCULATE THE MOON WHERE IS THE MOON
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@aeva https://aa.usno.navy.mil/publications/exp_supp roughly speaking it explains the mathematical models used to caclculate the almanac
@fanf that sounds useful. looks like it is out of print though?
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after a good night's sleep and reflecting on what I've learned so far, I've decided to follow the classic computer science strat: when faced with a problem you don't know how to solve, simply do something else, and pretend that is what you meant to do all along.
not only are horizontal coordinates the choice reference frame for backyard astronomers, the "altitude h" angular measurement is probably closer to the solution I wanted than my earlier framing of the problem. narf
the math's not quite right, but i managed to get the moon more or less working
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@aeva god, on the 3rd day:
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This is the best post to read entirely out of context that I have seen in years.
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astronomy math is out of this fucking world btw like want to know where the moon is? great buckle up you're in for a few hundred years of bizarre hacks and lots of exciting questions like "wait, why are they using the julian calendar?"
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This is the best post to read entirely out of context that I have seen in years.
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@aeva god, on the 3rd day:
@halcy :3
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astronomy math is out of this fucking world btw like want to know where the moon is? great buckle up you're in for a few hundred years of bizarre hacks and lots of exciting questions like "wait, why are they using the julian calendar?"
in a way magpie math is kinda refreshing, like imagine not throwing everything away every few years because of industry fads
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This post is deleted!
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astronomy math is out of this fucking world btw like want to know where the moon is? great buckle up you're in for a few hundred years of bizarre hacks and lots of exciting questions like "wait, why are they using the julian calendar?"
@aeva I think part of it is we stopped trying to guess based on date and moved to measurements and short term extrapolation
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@aeva wait, is it your fault that we’re losing the moon in however many millions of years?
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ok so back to the moon thing, i found another resource and i think i understand the why behind the asinine coordinate systems a little better but it also glosses over the math so it's kinda useless at the same time. i'm tempted to just make shit up and move on, but it would bother me that the function was wrong if i did that
@aeva This is why we threw our hands up and said, just use what's already been done. We outsource "where are the space things" to NAIF SPICE: https://naif.jpl.nasa.gov/naif/aboutspice.html (there's also the rust rewrite, ANISE, but we don't trust that at my place of work yet)
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@aeva I think part of it is we stopped trying to guess based on date and moved to measurements and short term extrapolation
@pupxel speak for yourself
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@aeva wait, is it your fault that we’re losing the moon in however many millions of years?
@c0dec0dec0de it might not be!
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@aeva This is why we threw our hands up and said, just use what's already been done. We outsource "where are the space things" to NAIF SPICE: https://naif.jpl.nasa.gov/naif/aboutspice.html (there's also the rust rewrite, ANISE, but we don't trust that at my place of work yet)
@squirrelbaffler it occurred to me that this is one of those situations where one would probably normally use a library, but the problem is I need to prioritize speed over accuracy because it's repeatedly invoked in a real time audio thread, a use case which i'd not expect to be shared by serious scientific or industrial use cases
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undefined aeva shared this topic on
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I warn you though, if I see the moon is broken tonight, I'll be complaining to you about it.
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I warn you though, if I see the moon is broken tonight, I'll be complaining to you about it.
@CliftonR I will happily accept moon-related bug reports
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astronomy math is out of this fucking world btw like want to know where the moon is? great buckle up you're in for a few hundred years of bizarre hacks and lots of exciting questions like "wait, why are they using the julian calendar?"
@aeva at least now we have the J2000 epoch, which kiiiiinda hides away a bit of the old cruft... but yeah, it's pretty wild.
On the other hand, thanks to these whacky calendar conversions they can apparently use observations made by Chinese astronomers 2000 years ago, so hey, maybe they have a point
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@aeva at least now we have the J2000 epoch, which kiiiiinda hides away a bit of the old cruft... but yeah, it's pretty wild.
On the other hand, thanks to these whacky calendar conversions they can apparently use observations made by Chinese astronomers 2000 years ago, so hey, maybe they have a point
@jon_valdes tbh i respect that modern astronomers decided this was fine and didn't go and add new problems to the pile
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in a way magpie math is kinda refreshing, like imagine not throwing everything away every few years because of industry fads
eee my copy of ｢The Astronomical Almanac 2025｣ arrived in the mail today while I was at work :D my hell spine hurts too much to be fussing with it tonight, but from flipping through it, it looks like it explains most of the information I've been missing and provides ample data to validate against <3
Gli ultimi otto messaggi ricevuti dalla Federazione
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@antonine Calcola che lo ho sul Kindle da tempo immemore, ma lo avevo accantonato perché Gancitano/Colamedici con tutta la storia di Ipnocrazia mi erano un po' scaduti.
Lo rispolvero, che mi sembra il momento buono per leggerlo.
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@sbarrax : 😱
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@fabiux erano le 3:52, son saltato sul letto (tale banca è a circa 100 m da dove abito)
poi mi son ricordato che dovevo portare fuori l'umido e ho fatto appena in tempo :D
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@zeank @marcms @prosodyim IIRC Prosody has a 'scan this QR code or click this link after you installed the app'
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@nicoco @gajim Yes, I've implemented both the allow list and the max reactions per user.
Thus far I only support this in MUCs (We mainly wanted to proof that the XEP is feasible rather than create functionality that many users will use immediately.)
Announcing it on the domain (with 'scope') would probably solve a problem that @larma and I have been talking about too.
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@daniel @marcms well, thank you so much for this feedback! I’ll change it then. I think this should also go as a bug report (or whatever) to prosody then.
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@FraEmme io finora mi ero illusa di essermi trasferita in in altro paese lontana da tutti gli affetti per "fare un'esperienza". la verità è che l'unica azienda ad aver cagato il mio CV e ad avermi voluta assumere stava qua in Polonia. proprio ora che ho deciso di riavvicinarmi al mio ragazzo mi sto rendendo conto di quanto la mia sia stata una NECESSITÀ perché non potevo più stare a casa dei miei e non ho il lusso di potermi far mantenere. le mie esperienze all'estero le avevo già fatte...
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@zeank @marcms Those Play Store links only work for first time installs (and barely).
The Play store link thing is a hack that's nice if it works but shouldn't be the primary (or only) method.
The flow needs to be something like 'go install an app, then come back to this page and click this xmpp: uri link'
The install link can have the referrer and then some users might notice that this works w/o going back to the page. But the xmpp link needs to be clickable from a prominent spot.
