Resolution killers in Slitless Spectroscopy

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  • čas přidán 16. 06. 2024
  • This video documents my learnings from finding, and resolving, resolution limitations of my "slit less" converging beam astro spectroscopy setup. I increased my resolution from 87 to 320 with just minor, but important, tweaks.
    Contents:
    0:00 Introduction
    2:58 What is R?
    10:58 Research
    17:30 Optimizing
    25:38 Results - Sirius
    26:23 Other Setups
    30:15 Wrap up
    Links to material I have used in the video (and for further reference):
    TransSpec v3.5b:
    groups.io/g/astronomicalspect...
    Book: Grating Spectroscopes and How to Use Them, Ken Harrison
    a.co/d/7U6TVyx
    David Boyd talk:
    britastro.org/wp-content/uplo...
    SolEx, StarEx project:
    www.astrosurf.com/solex/sol-ex...
    Robin Leadbeater: picture of resolution limiters
    www.threehillsobservatory.co.u...
    Doug West: math for resolution limiters
    users.erols.com/njastro/faas/a...
    Christian Buil: Prism, Coma correction:
    www.astrosurf.com/buil/us/spe1...
    Uwe Zurmühl: Objective grating to the max
    spektroskopie.vdsastro.de/fil...
    RSpec calculator: for dispersion not resolution
    www.rspec-astro.com/calculator/
    Dark Sky Geek: StarEX High res introduction
    / @darkskygeek
    Coma correcting Prism:
    realtime-spectra.com/collecti...
    www.shelyak.com/produit/prism...

Komentáře • 5

  • @barbaraharris6102
    @barbaraharris6102 Před měsícem

    This is very helpful for someone starting out. Thank you for explaining that spreadsheet. It is very overwhelming when you first look at it and hard to figure out where to start.

  • @johnfisher2495
    @johnfisher2495 Před měsícem

    Thanks so much for this effort. I've been meaning to get to doug west's article, this gives me a better idea of why. I look forward to more videos on both slitless and slit spectrographs.

  • @adairjanney7109
    @adairjanney7109 Před měsícem

    You should check out sky scholar though you will probably disagree with him, as far as I know he is a world renowned spectroscopist, highest MRI image, he believes and makes quite the case that the sun is made out of condensed matter not gaseous plasma, most likely liquid plasma like liquid metallic hydrogen.