Astro Tutorial #1.5: Focal Length and Aperture V2 - enhanced audio

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  • Опубліковано 24 січ 2025

КОМЕНТАРІ • 17

  • @brandonsanders3095
    @brandonsanders3095 3 роки тому +5

    Thanks for this! As a beginner, I've been looking all over for this info!

    • @catchingphotons
      @catchingphotons  3 роки тому +2

      Thanks Brandon! Glad the video was on any help!! Clear skies to you!

  • @svg98
    @svg98 2 роки тому +1

    This series is a god gift, thank you so much!

    • @catchingphotons
      @catchingphotons  2 роки тому

      🙏 thank you for your encouraging comment!! Clear skies!

  • @noone8609
    @noone8609 2 роки тому +1

    really thankful for the series of this video

    • @catchingphotons
      @catchingphotons  2 роки тому

      You are very welcome! Thanks for your kind comment. Clear skies!

  • @andregrodahn461
    @andregrodahn461 4 роки тому +3

    The supercheapo 76/700 or 76/900 Newtons even with the tiny EQ2 or whatever the Minimounts are called can be, with some advice maybe from astrotreff.de or the astrocommunity of your choice, a really good starting Point!!! My Seben 76/900 outperforms the kids-scope-tasco-refractor in dimensions!!!! Especialy when upgrading the ultracheapo eyepeaces with only supercheapo eyepeaces from AliExpress or used on ebay!

    • @catchingphotons
      @catchingphotons  4 роки тому +1

      Jep there are many good scopes for not much money. Maybe I should consider doing a video about those scopes :-) But you need the underlying principles to get a grip on their specs.
      Thank you Andre for your scope suggestions!
      Clear skies!

    • @andregrodahn461
      @andregrodahn461 4 роки тому +1

      I would bet that the 76/900 or 76/700 is THE most used sold Newtonian in Germany at all! There must be an humongous fabric in china grinding trillions of 76mm-mirrors 😁😁

    • @stefanmayer444
      @stefanmayer444 3 роки тому +1

      @@andregrodahn461 21,95€ ab 500 Stück aus China!

  • @stefanmayer444
    @stefanmayer444 3 роки тому +1

    I have one of these 10:36 cheap 76mm 700mm telescopes. How do they optically compare to something more professional? I mean just the mirror(s), not including the mount woubble, high tolerances in the focuser overall build quality etc.
    Could I combine 3 or even 7 of the primary mirrors to get a bigger aperture to create something like the Giant Magellan Telescope? I assume the mirrors in these cheaper telescopes are spherical, so as long as the bigger off axis angle doesn't ruin everything...or am I too unrealistic? I think a little functional model of the Giant Magellan Telescope would certainly look cool, but would it optically make sense with these mirrors?
    🔭 x 3 = 🌌 ?
    🤔

    • @catchingphotons
      @catchingphotons  3 роки тому +1

      Haha!! I LOVE the idea but am highly in doubt about the practicability...
      To your question: the optical components of my BRESSER telescope are of very good quality. The main mirror is parabolic and delivers good quality images.
      The parabolic mirror is a problem when arranging in bigger constellations. Second problem to my understanding: by combining separate mirrors you also add the individual optical errors to a big total error.
      But on the other hand: such a scope - what a cool thing to imagine :-D
      Clear skies!!

    • @stefanmayer444
      @stefanmayer444 3 роки тому

      @@catchingphotons Thanks for your response. Yes, collimation will probably be a nightmare :-) I hope it won't take me as long as it's taking for James Webb ;-)
      Your assessment of the optical quality of these mirrors encourages me to try it out. If it's not working at all, I have some other ideas to try out with a few telescope mirrors.

  • @raphnhat
    @raphnhat 3 роки тому

    Hello Chris! You mention the good guide scope. Can you show in which video?

    • @catchingphotons
      @catchingphotons  3 роки тому

      I've not jet done a video about guide-scopes but this will definitely come along.
      I use the Omegon 50/200mm guidescope with helical focuser and it works like a charm up until now.
      Clear skies!

  • @texdoms
    @texdoms 4 роки тому

    Good refresh!