Jump to content

SkySurveyBanner.jpg.21855908fce40597655603b6c9af720d.jpg

Ruud

Members
  • Posts

    3,438
  • Joined

  • Last visited

Everything posted by Ruud

  1. The tripod explains at least part of the price difference. The StarQuest tripod is cheap and not nearly as good.
  2. I found one here: https://www.rothervalleyoptics.co.uk/celestron-dielectric-star-diagonal-125-with-twist-lock.html and another here: https://www.amazon.com/Dielectric-Star-Diagonal-1-25-Twist/dp/B07VRSL37R They don't seem very popular. Maybe that is because of the price: £139. (Amazon asks $129 + costs) Anyway, other brands will also work on your 127 SLT. I replaced my 6SE celestron diagonal with a William Optics dielectric 1.25" and it was a major improvement! Good luck! Do let us know how you like the Celestron if you decide to buy it.
  3. That's odd, I was thinking the same about you. It's a small planet!
  4. Hi Turbo, Nice to see you here at the SGL!
  5. Please check if all the bolts are tightened firmly (especially those at the top of the legs) and weigh the mount down. To dampen any remaining vibrations more quickly, put the tripod on washing machine anti-vibration pads.
  6. Thank you Rob, for your first impression of the Panaview 38. I hope you have many clear nights and that the eyepiece will introduce you to some spectacular wide views. It's just perfect for observing larger clusters and the Milky Way. I'm a big fan of wide views of lunar eclipses, with the Moon all red and dark, and surrounded by many stars. So pretty. That by itself justifies having a wide, low magnification eyepiece!
  7. Hi Dale, your collection is not exactly complete, but you made a good start.
  8. Oh Agnes, how sad! Ed looks really lovely in that photo. I'm so sorry for your loss.
  9. Ruud

    New Member

    Hi Bill, thanks for joining.
  10. I've been here since 2014. I find that the SGL is big in many ways and that its members are noble and enlightened.
  11. Ruud

    Thank you

    Hi Colin! Thanks for joining.
  12. Hello Ross. Lovely images there!
  13. Hi Marios. That's a great sketch of the comet! Wonderful.
  14. Nice sketches! Thanks for sharing.
  15. If you have the original eyepieces they won't be very good. The 60° Starguiders https://www.firstlightoptics.com/bst-starguider-eyepieces.html are significantly better and a good bargain. Your telescope is f/11. You will get usable magnifications with eyepieces from 5.5mm focal length and up (11 divided by 2). Below 5.5mm focal length you will get higher magnifications but things will not look pretty. The image will become increasingly dark and blurry as the magnification goes up. One option is an 8mm and an 25 mm BST. (125x and 40x) Another option is a 15mm and a 25mm BST together with a 2x Barlow. This gives you effective focal lengths of 7.5, 12.5, 15 and 25mm. (133x, 80x, 67x and 40x) A third option is the 50° GSO 32mm Plössl, a 12mm BST Starguider and a 2x Barlow. Effective focal lengths would be 6, 12 16 and 32mm. (167x, 83x, 63x and 31x) I really like the TeleVue 2x Barlow, but the BST Starguider Barlow might be almost as good at fraction of the cost - I don't know.
  16. Wasn't this eyepiece announced on 1 April a few years back?
  17. I don't expect that moving to Delos will help. Delos are very nice but just about the same as Morpheus: well corrected eyepieces with long eye relief. Switching won't change much. I already had a Delos 12 and 8mm when I got the Morpheus 6.5 and was surprised at the similarities: huge eye relief and big eye lenses on both. The eye lens in the Morpheus is a bit larger than the Delos because it has to allow for a four degrees wider field. Maybe it was because I was already used to long eye relief that the Morpheus felt just right - except for its first generation eye cup, which was flimsy and didn't reach high enough. The current eye cup and extension ring solved the problem and now Delos and Morpheus are ergonomically equivalent. For my skull at least. Since the M6.5 I also got an M4.5 and M17.5. The superb M17.5 is the best of my long eye relief eyepieces, followed by D12, D8 and M6.5 (in a tie) and lastly M4.5. They're all better than the rest of my other eyepieces. My Morpheus are better than my Delos in two areas: wider field of view and less pincushion distortion. The latter is due to a small amount of negative AMD (angular magnification distortion) in the Morpheus, which actually increases the true field of view with a few percent above from what you would expect from a 76° eyepiece. The Delos, although sharper at the very edge, have a 4° smaller total field, so the well corrected part of the Delos field is still smaller that that of the Morpheus. Two aspects that don't put much weight in the scale for me are the Delos having a continuously adjustable eye cup and the Morpheus being lighter. The Delos are much more expensive though. I've not tried the M14 myself, but several people whose judgement I trust say it has an edge sharpness problem. I'm not sure if the focal ratio of the telescope plays a role in this. Read up carefully on the M14 before buying! From the M9 and M12 I've read nothing but praise and I expect they will be on a par with the M6.5. --- I hope omicron's difficulty with his M6.5 will disappear once he gets used to the eyepiece. In the past I have needed a bit of time to get used to the occasional new eyepiece.
  18. I'm not sure if I understand properly. Do you mean that you close your eye involuntarily? With as much eye relief as this eyepiece has, your eyelashes should not come in contact with anything. Could it be that you are somehow way to close to the eye lens? For no glasses, the eye cup ring + extension ring (two rings in total) should make this impossible. On your f/5 telescope, the exit pupil is 6.5 / 5 = 1.3 mm. It's a well defined exit pupil too. On my f/5 it gives me no daytime issues at all, even on bright days when exit pupil issues show most prominently. Anyway, exit pupil issues should not cause eyelid reflexes. I'm sorry I can't be of more help. Except eye placement I have no idea what could be going wrong. Please experiment a bit more. With your glasses use just the eye cup ring and the eye cup folded up or down, without your glasses try both rings, again with the eye cup folded up or down.
  19. Ruud

    newbie

    Welcome Alan!
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.