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Gender
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Interests
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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Location
the Netherlands
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SGL 2019 Lunar Landings Challenge #28
Ruud replied to MartinB's topic in Imaging Challenge Winners 2021
Thank you Martin, Jury. I love tea, so the SGL contest mug will get some good use. Also, the runners-up posted truly excellent and beautiful images. Kudos for that! -
It's a wonderful sketch Achim!
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A wonderful sketch, Mike. Thanks for sharing!
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Awesome sunspots and some wonderful sketches! Thanks for sharing.
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Can anyone shed some light on Optica b/c eyepiece?
Ruud replied to AlessiR's topic in Discussions - Eyepieces
It's a pump for a bicycle. -
Ooh! Amazing! With poetry! Do you know The Little Fete by Vangelis? Listen to it here. It is quire beautiful: / Ouça aqui. É muito bonito: https://www.youtube.com/watch?v=sJa2yup0SqY The Little Fete I take a bottle of wine and I go drink it Among the flowers, we are always three Counting my shadow and my friend The shimmering moon Happily the moon knows nothing of drinking And my shadow is never thirsty, when I sing The moon listens to me in silence When I dance, my shadow dances too After all festivities the guests must depart This sadness I do not know When I go home, the moon goes with me And my shadow follows me In Portuguese: A pequena festa Eu pego uma garrafa de vinho e vou beber Entre as flores somos sempre três Contando minha sombra e meu amigo A lua cintilante Felizmente a lua não sabe beber E minha sombra nunca tem sede, quando eu canto A lua me escuta em silêncio Quando eu danço, minha sombra dança também Depois de todas as festividades os convidados devem partir Essa tristeza eu não sei Quando eu vou para casa, a lua vai comigo E minha sombra me segue
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Oh, new images. They are excellent! Good that you are posting again.
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Help with buying first telescope please.
Ruud replied to Dan990's topic in Getting Started Equipment Help and Advice
Better buy her one like this: https://www.firstlightoptics.com/beginner-telescopes/skywatcher-skyliner-150p-dobsonian.html It is a bit over budget, but excellent for visual observation of the Moon and planets, and it will show her dozens of deep sky objects too. A wonderful all-round telescope that will keep her interested for years. -
That's great!
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A lovely sketch. Thanks for sharing.
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Explore Scientific 12mm 92° has arrived
Ruud replied to michael.h.f.wilkinson's topic in Discussions - Eyepieces
Wow, congrats. It's almost bigger than your kettle! Happy observing. -
APM 7x50 vs 10x50 coating comparison HELP PLEASE!
Ruud replied to tylersk90's topic in Discussions - Binoculars
Excellent picture. Very clear. 10x wins: The eyepieces of the 10x do have better anti reflection coatings. This is obvious from your picture.. 10x wins: The EPs of the 10x have an apparent field of view of 65° compared to the 52.5° of the 7x. 7x wins: The true field of the 7x is 15% wider than that of the 10x. 10x wins: The 10x has a better exit pupil for astronomy. 5mm keeps a light polluted sky a bit darker and is more future proof (5mm makes more sense for when one gets older). Tie: Both show their best views when you keep them stable them on a bean bag, monopod or tripod. These are just my ideas of course. The 7x50 is no doubt an excellent instrument, but the 10x probably is a better choice. You are fortunate to have both. Congrats! Please compare them in the field, and share your experiences with us. We'd be very interested!- 5 replies
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