Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

Welcome to Stargazers Lounge

Register now to gain access to all of our features. Once registered and logged in, you will be able to contribute to this site by submitting your own content or replying to existing content. You'll be able to customise your profile, receive reputation points as a reward for submitting content, while also communicating with other members via your own private inbox, plus much more! This message will be removed once you have signed in.

  • Announcements

    sgl_imaging_challenge_banner_jupiter.jpg

     

Ruud

Advanced Members
  • Content count

    1,770
  • Joined

  • Last visited

Community Reputation

1,238 Excellent

About Ruud

  • Rank
    Free-Floating Planet
  • Birthday

Profile Information

  • Gender
    Male
  • 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.
  • Location
    the Netherlands

Recent Profile Visitors

2,097 profile views
  1. This season brought you a rich harvest. That's for sure!
  2. Wonderful new ventures -- wishing you sunny days!
  3. Smashing! Splendid Saturn. Wonderful.
  4. Ah, an old friend. I remember it well. Thanks!
  5. Definitely two good images by any standard!
  6. A fine series. Thank you for posting!
  7. Great! It's fabulous!
  8. Lovely pics! Thank you.
  9. I think that for your f/4.39 telescope 24mm is better than 32mm. 24mm will have an exit pupil of 24 / 4.39 = 5.5 mm 32mm will have an exit pupil of 32 / 4,39 = 7.3 mm You don't want an exit pupil bigger than your own pupil, so 7.3 mm is just a bit too wide. Also, sky brightness will become pretty obvious with exit pupils much larger than 5 mm. Additionally, a 24 mm 68° wide field and a 32 mm 50° plössl will both show the maximum amount of sky that you can see in a 1.25" focuser. I'm not very fond of zoom eyepieces. Your 3 fixed focal length choices seem quite good to me, except that I prefer just a bit more eye relief than what you get from 82° ES eyepieces. You could also consider William Optics UWAN 82° or their clones.
  10. Wow, it looks brand new! Congratulations!
  11. Hi Matt, welcome to the forum and to our really expensive hobby!
  12. It's a gorgeous image, Avani. Thanks!
  13. Fascinating animations and a gorgeous opening image. Beautiful!
  14. Nearly identical to the ES 68 are the Meade SWA and its identical twin, the Maxvision 68°. I have a 28 mm Maxvision and it is very good at f/5. (Never tried it on anything faster than that.)