JSol'Ex : solar image processing in Java

Transcript

1. @YourTwitterHandle
   #DV14 #YourTag @[email protected] @[email protected]
   #Devoxx #SolEx #JsolEx #Solar
   JSol'Ex
   Solar image processing written in Java
   Cédric Champeau
   Oracle Labs
   

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2. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
   About me
   - Working at Oracle Labs on Micronaut
   Main focus on build plugins and dev productivitity
   @[email protected]
   - Formerly working at Gradle Inc
   - Author of static compiler of Groovy
   - Amateur astronomer
   @[email protected]
   https://www.astrobin.com/users/melix/
   https://bit.ly/3eGD0GM (Youtube)
   

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3. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
   Sol’Ex Project
   ● Sol’Ex = Solar Explorer
   ● Invented by Christian Build (amateur astronomer)
   ● Community driven and DIY
   http://www.astrosurf.com/solex/sol-ex-presentation-en.html
   

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4. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
   Sol’Ex project
   

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5. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
   Sol’Ex Project
   

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6. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
   Sol’Ex Project
   

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7. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
   Sol’Ex Project
   

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8. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
   Sol’Ex Project
   

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9. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
   Sol’Ex Project
   

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10. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Sol’Ex Project
    10 Ångström (1 Å) = 1 nm
    

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11. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Sol’Ex Project
    ● Can choose wavelength
    ● Very fine resolution (<0.2 Å), narrower
    than typical filters (several Å)
    ● Upgrade to star spectrography (Star’Ex
    project)
    ● But no direct images!
    ● Official software : INTI by Valérie Desnoux
    

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12. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Sol’Ex Project
    

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13. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Sol’Ex Project
    Scan
    Direction (RA)
    

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14. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Sol’Ex Project : Build your own!
    ● Azur3DPrint : 3d printed parts
    – https://azur3dprintshop.com/
    – Coupon DEVOXX2023, 10% off Sol’Ex V2 (exp 30/10)
    ● Shelyak Instruments : optical kit
    – https://www.shelyak.com/
    

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15. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    INTI
    ● Official software, Open Source, GPL
    ● http://valerie.desnoux.free.fr/inti/
    ● Written in Python, Windows installer (1GB)
    

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16. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    JSol’Ex backstory
    ● Educational purpose
    – Understand how Sol’Ex / SHG works
    – Am I still a capable developer ?
    ● Technical challenge
    ● Technology playground (JavaFX, vector API, ...)
    ● Show that Java is very capable for real science
    https://melix.github.io/blog/2023/04-22-introducing-astro4j.html
    

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17. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    JSol’Ex
    ● Written in Java
    ● OpenSource, Apache version 2
    ● https://github.com/melix/astro4j
    ● Installers for Windows, Linux, Mac (~50MB)
    

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18. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    JSol’Ex
    ● Technology stack
    – JavaFX for UI
    – Micronaut for CLI
    – Java modules
    – JLink + JPackage for distribution
    – Experimental GraalVM native image binaries
    – Gradle for builing
    

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19. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    JSol’Ex
    DEMO
    

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20. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Jsol’Ex : geometric corrections
    

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21. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Jsol’Ex : blurry / incomplete disks
    

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22. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Jsol’Ex : ImageMath
    ● An expression language dedicated to processing
    ● One click : many results
    ● e.g Helium line processing, animation creation
    

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23. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Jsol’Ex : lessons learnt
    ● Programming is fun
    ● Many challenging problems, math is hard!
    ● Scientific literature is hard to convert to algorithms
    ● Happy users are your reward for hard work
    ● Java 17+ : 😍
    ● Java modules : 🤨
    

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24. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Conclusion: Sol’Ex
    ● It’s real science
    ● https://bass2000.obspm.fr/home.php
    ● A bit of tinkering but extremely satisfying
    ● Some “forks” already exist
    ● Join us!
    

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25. #Devoxx #SolEx #JSolEx #Solar @[email protected] @[email protected]
    Resources
    ● Sol’Ex project: http://www.astrosurf.com/solex/
    ● INTI: http://valerie.desnoux.free.fr/inti/
    ● JSol’Ex: https://github.com/melix/astro4j
    ● Sol’Ex English mailing list: https://groups.io/g/Solex-English
    ● Azur3dPrint: https://azur3dprintshop.com/
    ● Shelyak: https://www.shelyak.com/
    

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