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About Ruud

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    Free-Floating Planet

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    Thank you for visiting my profile. Besides astronomy, I take an interest in photography, skepticism, science, maths, podcasts, radio and cycling. I teach mathematics.
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    the Netherlands
  1. Morpheus 17.5mm 76° is an excellent eyepiece in all sorts of telescopes. Long eye relief makes it good for people who must wear glasses. I'm very happy with mine. The 16mm 82 °Skywatcher Nirvana / William Optcs Uwan / TS Optics UWA are all clones of each other and amazingly good value. The TS costs €100 these days. See here. My best ever view of Jupiter was with the 16mm Nirvana, barlowed in a 1500mm telescope. Eye relief is comfortable, but probably too short for those who must wear glasses. I mention these ultra wides because they have about the same true field of view as the 17.5mm Morpheus above. ES 68° 24mm is about as good as the Nirvana. Eye relief is again too short for glasses. I have an optical twin of this eyepiece. It's a nice eyepiece even in fast telescopes. Has a bit of pincushion distortion, but no more than the expensive TeleVue Panoptic 68°. Hyperion 24mm is not so good. Many say it's just an Erfle. That's an older design which is surpassed by many others. Of the Hyperion line this is the weakest performer, but frankly, the whole line has the reputation of being a bit soft. I suppose your dad's 25mm is some sort of Plössl eyepiece? I got one with a Celestron telescope that's not bad. It's about 50°. It gets little use. I prefer the 24mm 68°. --- For the Moon I prefer magnifications around 150x or, when the atmosphere permits, higher. I like wide views on the Moon so I use 82° and 76° eyepieces for it. The Moon itself is half a degree wide, and at 150x it spans 75°. --- I have a few short and medium focal length eyepieces. For really high magnifications I combine them with a Barlow.
  2. Ruud

    Stellarium 0.18.2

    Hi Alexander, I'm very happy with 18.2! Many thanks. For a future version: Is it be possible to increase the resolution of the Moon? That would be really nice! Bye
  3. Goto https://stellarium.org download and install start stellarium [F2] Configuration -> Plugins find "Oculars" Check "load at startup" restart stellarium Populate the Oculars plugin with your telescope(s), barlow lenses, and eyepieces and start comparing
  4. Would a dob combined with something like this also work or you? I found this on here: https://www.astronomics.com/jmi-wheeley-bar-telescope-transporter-meade-10-12-inch-lightbridge_p14944.aspx A friend had a similar setup which his dad made for him (probably for a third of the cost of this thing). Anyway, a dob +wheels could be less expensive than a C6 and reach deeper at the same time. I have a nexstar C6. It works and it is't heavy, plus the base and the tripod separate easily. Still, you can get four dobs of that aperture for the same money.
  5. Ruud

    11 x 70 Binoculars - Are they good?

    For just about any magnification I prefer some form of binoculars support: I see more detail that way. The support carries the weight of the binoculars and keeps them stable at the same time. I prefer a monopod. Mine is not very tall, so I place its foot on a small table. With the pod fully extended I can comfortably look at high altitude objects. For that I move close to the table so that the monopod is almost vertical and the binoculars are raised high enough to stand under them. For lower altitude targets I take a step back. The monopod then slants down and the binoculars aren't so high any more. Easy and fast. I'd certainly need it for 11x.
  6. Oh, wow! Congratulations to Avani and Pete: the winning images are fantastic!
  7. Ruud

    Saturn, August 04 - 2018

    Awesome! I think I see no fewer than 8 divisions. I marked them out in this animated gif: Divisions-larger.zip
  8. Ruud

    Moon widefield

    There's a Moon with a lovely ambience!
  9. Ruud

    Jupiter, August 13-2018

    These are two of those really good ones. Just how we like them!
  10. Ruud

    Eyepiece for wide field scope

    I use binoculars for hand-held views from 7.5° to 17° tfov. The 17° is this very cheap pair: https://www.google.nl/search?newwindow=1&client=opera&hs=Zof&tbm=isch&sa=1&ei=k0R0W-f3CZDewAK2pKagAg&q=kasai+4x22&oq=kasai+4x22&gs_l=img.3...348597.349370.0.351011. These are sold under many names.
  11. Ruud

    On-line Mars atlas?

    For Stellarium, it may be helpul to use Alt+N, which does the same as View [F4] -> SSO -> Show planetary nomenclature. This toggles the labels of the features on the planet's surface. It also works for the Moon. Check out Configuration [F2] -> Tools -> Edit keyboard shortcuts... It's almost a manual by itself.
  12. Ruud

    New binoculars

    Here are a few ideas: https://www.allbinos.com/index.html?test=lornetki&producent=&modele=all&powiekszenie=0&srednica=4&pryzmat=0&sort=&szukaj=Search&przetest=1
  13. But, those are premium eyepieces. Congrats on owning them, they're not cheap, but they handle fast focal ratios very well.
  14. Ruud

    Mars, August 13-2018

    A world of detail. It's wonderful
  15. Ruud

    Messier 6 (The butterfly cluster)

    It's a lovely sketch. Thank you!

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