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September Challenge: Sun vs Betelgeuse RRS feed

  • General discussion

  • Here is a suggestion for September Challenge:

    Write a program to represent graphically, as for example circles or resized images, which will aim to compare the true size of our star the Sun compared with the giant star Betelgeuse.

    link: Wikipedia - Betelgeuse

    Orion and Betelgeuse as seen in the World Wide Telescope freeware.

    Betelgeuse and Bellatrix mark the two shoulders of Orion the hunter.

    Betelgeuse specification in the finder scope of the World Wide Telescope freeware.





    • Edited by YLedEditor Saturday, September 10, 2016 1:56 PM wikilink
    Saturday, August 20, 2016 2:53 PM
    Answerer

All replies

  • This is my code for this challenge: MHL183.

    Screen shot of a program Sizes of Stars


    Nonki Takahashi

    Saturday, September 10, 2016 5:08 AM
    Moderator
  • Hi Nonki ! great program !

    i realize when i saw your program codes that my program have some major errors about the radius of Betelgeuse.

    So i went up again to Wikipedia and find this radius and on many websites to:

    Betelgeuse is 887  ± 203  times Solar Radius

    some websites say 1007 somes says 700,  it is ± 203,  so 887 is the average.

    ' if the sun is 2 pixels diameter then Beltelgeuse is 2 x (887 x 2) pixels diameter =  3548 pixels
    '  https://en.wikipedia.org/wiki/Betelgeuse

    my new retouched program:   KLM858


    • Edited by YLedEditor Saturday, September 10, 2016 2:02 PM ± 203 add
    Saturday, September 10, 2016 1:55 PM
    Answerer
  • Here is a more Advanced version with LDimage.effect in the program to have the colors of the stars more near to reality.

    Betelgeuse is a Red Super Giant ( Spectral classification  M1-M2)

    Rigel is white or slightly blue-white Super Giant ( Spectral classification  B9V)

    Sun is yellow star ( Spectral classification  G2V)

    program no: DVH745

    Saturday, September 10, 2016 3:08 PM
    Answerer