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YKSE

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Everything posted by YKSE

  1. Congratulations John. I'm quite sure the Tak will be sharper than 120ED, by simple reasons as 1. It's floruite, better than FPL53 2. it's 4", not 4.7",. easier for better colour correction. 3. it's f9, better than f7.5, also easier for better colour correction 4. and it's a Tak.
  2. Cloudy=no observing, but C8 was still out for hours for measuring:smiley:

    1. Show previous comments  2 more
    2. jetstream

      jetstream

      What were you measuring?

    3. YKSE

      YKSE

      Focal Lengths of different combinaitons and my GPCs' actual mag factors

    4. jetstream
  3. Noce More time observing is good way make best of the few clear nights
  4. Wanhao 4S on the way, so is 12x50 Nikon EX

    1. Show previous comments  1 more
    2. YKSE

      YKSE

      Just to get the few DIY stuffs done, filter wheel, holders, bino filters...

    3. jetstream

      jetstream

      I understand now :) are you taking orders?:grin:

    4. YKSE

      YKSE

      That'll depend on my printing skill:icon_biggrin:

  5. They have very good range of binoculars (even though many not in stock), and very atractive prices. Andrews' review mentioned their good combined postage cost. So when I saw the two pais of binos I'm interested in, I took the plunge. £12 postage to Sweden for the two, clearly among the best UK dealers for EU shipping. Order placed on Friday, it arrived in Stockholm already on Monday! While the Swedish postal service took three days to send it to me. It was well packed with foams inside around the bino pairs, a tag of "fragile" on the package to reminder postmen for gentle handle A very easy and smooth purchasing experience with microglobe, I can warmly recommend it.
  6. Lovely looking scope, Stu. Is there any strengthening behind the focuser mounting plate? To my engineering fixated eyes, the focuser plate will be most strained when viewing near zenith, a plate without strengthening looks a bit weak when using heavy EPs. Viewing targets away from zenith shouldn't have any issue.
  7. I have travelled with my C8, 120ED, 80ED, 8x40 bino, 15x70 bino, and the eyepiece case, erh, that's all the visual stuff I have
  8. Thanks Michael, that's very good to know. so there're actually more, even though small, advantages in using EPs with large exit pupils
  9. Nice case, Michael! People do use EP with large exit pupils as here (10.4mm!), my guess is that with large aperture, light grasp is not an issue, while TFOV can be a more precious commodity.
  10. Steve, There seem to be a number of different Paracorr I, you can find out a bit more here http://www.cloudynights.com/topic/444841-confused-different-models-of-paracorr-1/?hl=%2Bdifferent+%2Bparacorr#entry6986374
  11. A few days of warmth :-)

    1. Pig

      Pig

      Clear skies and warm weather... wow ... you are being spoiled :-)

    2. YKSE

      YKSE

      Warmer, 20+ :-) hoping to see Omega centauri!

    3. Pig

      Pig

      Sounds great Yong...good luck :-)

  12. Clear sky tonight :-) ready for trip!

    1. Show previous comments  2 more
    2. Pig

      Pig

      Good luck Yong, I hope it stays clear for you :-)

    3. YKSE

      YKSE

      thanks folk, it did stay clear. A report shall be

    4. michael.h.f.wilkinson

      michael.h.f.wilkinson

      Happy hunting (Horsey again?)

  13. There's another screw under the findscope you can adjust with a screwdriver. My celestron RACI finder could be easily aligned with those two screws for a long time. One day it became quite off, not even losen or tighten the screw under could get it properly aligned. I put in a spacer between the screw and finder to get it work.
  14. That's an excellent way to learn all these thing IMHO, you get to know all the different oppinions from variaty of time point of different users, much better than post a simple question like "what's best eyepiece", where you'll only get some answers available at the time, and it saves you time and money from trying out different eyepieces, unless it's part of your interest or work.
  15. Steve, I got these Nikons when Swedish kronor was 10% stronger to Yen then They're quite good to my eye, Vega is as pin sharp in the edge as in the center in 120ED, very good stray light control (Moon is invible outside field of view), scatter light on Jupiter is in level with 18mm BCO. very little latteral colour seen in daytime, clearly less than MaxVisions; very little rectilinear distortion, the slight barrel distorion is only seen in 17.5mm pointing at telepost in daytime. Angular Magnification distortion in these EP does make splitting doubles in the edge more difficult, this is none issue for me though since I prefer to observ on-axis where aberrations are minimum. The extra field is good for star-hopping, the distortion type (AMD) suit me better to match star patterns with star chart. 17.5mm SW has 26mm ER! it's quite smaller without the eye cup: Using 17.5SW without eye cup, you get the same floating effect which 28mmRKE is famed for, but its much easier to hold the view in Nikon. Edit: forgot to mention it, they're par-focal, and par-focal with Pentax XW too
  16. This my first yearly update of the case, lt looked like this last time, and here is it, after over 20 trips to dark site, nearly 300 new DSO (over 100 galaxies among those) The updgrades(new additions): Considering the discussions of undercuts, here're pictures of barrel shapes of mine: With safety undercut: Smooth barrel: Bevel barrel:
  17. Nice collection and yes, you're just one or two holes away from pronouncing the magic words - about this case
  18. My bad , had only looked at wrong position, not following Al's recommendation just didn't come across my mind. The updated info for this handsome triple is about 300mm long and safely above 2kg
  19. Even without the paracorr which usually sits inbetween?
  20. I think the EiC-H14 comes with HW 17 changes it to 14mm, and the EiC-H10 comes with HW12.5 changes it to 10mm. As the EiCs have only two lens, and change focus position as shown here, they are more barlows than tele-extender.
  21. Nice collection, Kerry And I have been under impression that Delos' are long....
  22. Those are serious good glasses Have you been able to get a first light with L-O-A 21?
  23. Ian, I'm thinking of binoviewing with heschel wedge, therefore shortening the light path is important. I've checked with Baader support about the BDS, light path is 12+58+7+4.9=82mm with the short eyepiece holder. The stock focuser measures about 122mm long without taking it loose, so the light path seems to be something up to 30mm shorter with BDS. I'll be very interested in your measurement.
  24. Ian, Can you help me with the focuser light-path difference of BDS vs SW crayford? Thanks
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