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Ruud

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Posts posted by Ruud

  1. The Morpheus eyepieces above have a 1.25" barrel but can also be used directly in a 2" focuser. There's little point in doing this however as  they sink in unusually deep. Using a 2" to 1.25" adapter  works better.

    +1 for the notion that a Barlow is most useful in combination with mid and short focal length eyepieces, which tend to be 1.25".

    I have four 1.25" Barlows. The newer 2x and 3x get the most use, but the older 1.8x and 2.5x are also quite nice and just too difficult to part with. I do not own any eyepieces with focal lengths under 4.5 mm, but with the Barlows and my 4.5, 6.5, 8 and 12mm eyepieces I have a wide range of high to very high magnifications to choose from using my f/5 refractor.

  2. For terrestrial observations amici prisms are OK. This is because these observations are limited mostly by looking horizontally through thick atmosphere, when magnifications over 80x are hardly usable anyway.

    On a good night however, allowing high magnifications, the amici prism becomes the weak link and a noticeable source of image degradation.

  3. Hi, welcome,

    I'd go for two eyepieces and a Barlow. You'd not only get four magnifications, but every additional 1.25" eyepieces you add later on will provide two more magnifications. Of course you must plan well to avoid overlap.

    A Barlow has the added advantage that it "slows down" your f/5 scope to f/10, which makes just about every eyepiece shine. (I exaggerate, a few eyepieces are bad at any focal ratio)

     

     

    • Like 1
  4. That was a wonderful read, Stu. The Zeiss may have won, but it's not the most handsome tube. It sits on some gorgeous legs though. How are the slow motion control and the stability of the Unitron mount?  

    • Thanks 1
  5. Hi Alexander,

    Thank you for the new version. I went for the beta v0.20.0.17814.

    It runs fine. Again, I get the best result on my 4K monitor and NVIDIA 1060 in ANGLE Direct 3D 11 mode. I tried the others, but in ANGLE the fonts and lines still look perfect and in the rest not.

    I just installed today and will let you know if I come across any issues.

    I am very grateful to you and the others of the Stellarium team.

    • Like 1
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