Where communities thrive


  • Join over 1.5M+ people
  • Join over 100K+ communities
  • Free without limits
  • Create your own community
People
Activity
    matrixbot
    @matrixbot
    mose.giordano Welcome back David!
    mose.giordano Congratulations and good work to all students πŸ˜€
    matrixbot
    @matrixbot
    jorgepiloto Hi all! My name is Jorge, hope to spend a great GSoC with all of you guys πŸ˜ƒ
    matrixbot
    @matrixbot
    Chatziargyriou Eleftheria Hello everyone πŸ‘‹
    aquatiko Hello everyone!! Rohit here... Hoping to spend a great summer with openAstronomy and GSoC!!
    matrixbot
    @matrixbot

    bsipocz > is the policy the same?

    Yes. Students are expected to write up a blogpost of their progress every two weeks. First one is at the end of the bonding period.

    bsipocz feeding it into the suborg's blog is welcome, but we still a separate stream for the student that is also fed into the OA list,.
    matrixbot
    @matrixbot
    astrojuanlu excellent, thanks! πŸ‘Œ
    matrixbot
    @matrixbot
    DavidPS I'll send an email with instructions later.
    matrixbot
    @matrixbot
    Github [@Cadair:matrix.org] [OpenAstronomy/openastronomy.github.io] shreyasbapat opened pull request #221: Add EinsteinPy to OpenAstronomy [open] - OpenAstronomy/openastronomy.github.io#221
    matrixbot
    @matrixbot
    astrojuanlu hi! roughly two months for #pyastro19, so I will purchase my flights soon. do you have an estimate on the outcome of the financial aid? thanks!
    matrixbot
    @matrixbot
    astrojuanlu also, the "directions" page of STScI is under construction http://www.stsci.edu/institute/brc/facilities/Directions.html
    matrixbot
    @matrixbot
    astrojuanlu I think the most convenient option, at least from Madrid, is to fly to New York with Norwegian (very convenient!) and then taking a 2 hour train
    matrixbot
    @matrixbot
    mose.giordano a bus maybe a cheaper alternative to the train, if you're on a budget
    matrixbot
    @matrixbot
    astrojuanlu thanks for the tip mose.giordano!
    matrixbot
    @matrixbot
    DavidPS maybe we could link it on the student guide
    Github [@Cadair:matrix.org] [OpenAstronomy/openastronomy.github.io] dpshelio opened issue #222: Resource for new contributors? [open] - OpenAstronomy/openastronomy.github.io#222
    Github [@Cadair:matrix.org] [OpenAstronomy/openastronomy.github.io] dpshelio edited issue #222: Resource for new contributors? [open] - OpenAstronomy/openastronomy.github.io#222
    matrixbot
    @matrixbot
    bsipocz linking to aim it for whom?
    matrixbot
    @matrixbot
    Github [@Cadair:matrix.org] [OpenAstronomy/openastronomy.github.io] bsipocz opened issue #223: astropy gsoc 2020 ideas [open] - OpenAstronomy/openastronomy.github.io#223
    matrixbot
    @matrixbot

    jorgepiloto Hi OpenAstronomy people! It is Jorge, from the poliastro package πŸš€πŸŒοΈ

    I was wondering if anyone has ever heard about an algorithm called Improved Gauss method for solving Kepler's problem. I found it on Battin 1999 [pag 234]. It is supposed to be a high performance propagator for near-parabolic orbits but after implementing it seems to not converge for some orbits.

    So if anyone has more information it would be tremendously usefull! Best regards 😊

    jorgepiloto By the way, if you want to take a closer look to its current status here is the link to the PR I did: https://github.com/poliastro/poliastro/pull/631/files
    matrixbot
    @matrixbot
    mose.giordano I find the method in http://dx.doi.org/10.1007/BF00691917 very interesting: it works in the entire elliptical regime and is non-iterative @jorgepiloto:matrix.org
    matrixbot
    @matrixbot
    astrojuanlu ❗
    matrixbot
    @matrixbot
    jorgepiloto Wow mose.giordano ! That method looks really good. Thank you so much for your time, hope to have the algorithm implemented before poliastro 0.13 version. I am obsessed with finding a fast-convergence-all-possible-eccentricities-crazy-kepler-solver πŸ˜†, so that paper will be usefull for sure
    jorgepiloto It states that realtive errors are of the order of 10e-16 and due solely to machine arithmetic roundoff! I'll let you know once the algorithm will be working. Thank you again πŸŽ‰
    matrixbot
    @matrixbot
    mose.giordano I wrote a Julia implementation of the "naive" method in https://github.com/JuliaAstro/AstroLib.jl/blob/fb2ef587a2ac68a1c864bf251e8d9c3601ec4719/src/kepler_solver.jl The paper is really straightforward, it's incredibly easy to implement. Probably the "non-naive" method is a little bit less trivial
    matrixbot
    @matrixbot
    jorgepiloto Crazy! 🀯
    matrixbot
    @matrixbot
    accidentalhacker on Freenode hello. is there an asteroid day q&a somewhere?
    matrixbot
    @matrixbot
    HarveyPwca on Freenode Goodbye Aberration: Physicist Solves 2,000-Year-Old Optical Problem https://petapixel.com/2019/07/05/goodbye-aberration-physicist-solves-2000-year-old-optical-problem/
    matrixbot
    @matrixbot
    astrojuanlu πŸ‘ :flag_mx:
    astrojuanlu πŸ‘ πŸ‡²πŸ‡½
    matrixbot
    @matrixbot
    miguelcarcamov hi all, what are the terms or conditions for a software to be part of open astronomy?
    matrixbot
    @matrixbot

    jorgepiloto Hi everyone! Hope you are spending a really good summer if you are in the northern hemisphere.

    I am trying to implement the U.S. Atmosphere 1976 a.k.a COESA76 and got stucked with the pressure equations for geometric altitudes avobe Z>86km. If someone knows any software, routine or algorithm where I can check the implementation and compare with the official NASA document it would be so useful πŸ™‚

    jorgepiloto Oh, and for those in southern hemisphere, happy winter 😁
    matrixbot
    @matrixbot
    astrojuanlu hmm jorgepiloto perhaps the Vallado routines have it? not sure though
    matrixbot
    @matrixbot
    Chatziargyriou Eleftheria I'm not familiar with it but perhaps this is what you're looking for
    matrixbot
    @matrixbot

    jorgepiloto astrojuanlu Chatziargyriou Eleftheria It seems like Vallado only covers Jacchia (the one that Eleftheria shared) and Ghost models.

    Temperature computation is really well explained in the official document. However, when it comes to pressure things get weird πŸ₯΄

    matrixbot
    @matrixbot
    swedneck:privacytools.io hi all, i'm curious what's required to be able to see saturn. i've heard you can possibly even see it with binoculars, is there any truth to that?
    matrixbot
    @matrixbot
    Cadair Yeah, with decent binoculars you should be just about be able to see the rings iirc
    matrixbot
    @matrixbot
    swedneck:privacytools.io what magnification should i be looking at?
    matrixbot
    @matrixbot
    Cadair I have no idea about binoculars unfortunately. Never looked at buying any myself.
    matrixbot
    @matrixbot
    swedneck:privacytools.io hmm, well if i presume i was looking at saturn today with my 7x binoculars, then i guess 20x or more should let me see at least a hint of the rings
    matrixbot
    @matrixbot
    Foks I guess this thing I did recently is an open astronomy thing :)
    https://git.pixie.town/f0x/earth-wallpaper-api
    Foks takes the latest Himawari-8 picture, and makes it into a nice wallpaper, which can then be set automagically from https://f.0x52.eu/earthwallpaper/himawari-8-quote.png or https://f.0x52.eu/earthwallpaper/himawari-8.png
    matrixbot
    @matrixbot
    matrixbot
    @matrixbot

    Foks > <@cadair:cadair.com> nice, you seen https://github.com/cameronleger/goes16-background ?

    ooh nice

    Foks there's a Himawari-8 one as well I see now...
    matrixbot
    @matrixbot
    abhijeetmanhas Hi everyone, I am Abhijeet, CS sophomore at IIT Mandi. I want to ask is there any python library in which we can 3D plot or visualize Reissner–NordstrΓΆm Black Holes(in general any black hole) and visualizes gravitational lensing too?
    matrixbot
    @matrixbot
    shreyasbapat Not exactly gravitational lensing, that's a feature to come soon, but for blackholes, say hi at #einsteinpy:matrix.org