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johninderby

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Everything posted by johninderby

  1. The steel bearings for issue 8 are in a seperate little plastic bag packed loose with everything else. I almost threw them in the bin with the grey plastic bag but at the last second realised there was something tucked away in one corner of the bag. John
  2. Join the CGE yahoo group. http://groups.yahoo.com/group/CGE-TelescopesUNCENSORED/ Lots of info and pics and tech information there. John
  3. Hi The C11 is a bit too big for the CG5 mount. The mount will carry this OTA but it's a bit shaky. Visual only. The CPC series has excellent internal parts with metal gears, no need to worry about it, very reliable. You're probably thinking of Meade, a lot of their fork mounted SCTs had plastic gears etc and did need upgrading, although the latest ones are better. The CGE-11 is a bargain at that price as the mount is worth that on it's own, and it is built to handle a C14 never mind a much lighter C11. It is being replaced by the new CGE-PRO mount hence the bargain price on the CGE. If you can go for this you won't regret it. Much, much heavier duty than the HEQ6, in a different class entirely. Definitely falls into the bargain of the year category. John
  4. From what I understand the Ascension (Meade) 102ED Triplet APO is almost as good as the ED100 with just a tiny bit more CA than the ED100 but overall there's very little in it. While the triplet is theoretically better, it is harder to make, so at this price level the easier to make doublet is usually a bit better and it is easier to maintain consistent quality. The triplet's quality will vary more. Also the triplet takes longer to cool down and the scope will be more front heavy. The ED120's aperture will definitely give it a big advantage over the 102 triplet, so in a contest between the two it's the ED120 all the way. The above only applies at this low price point. When you get into high end scopes it all changes. John
  5. Planning rules vary wildly from area to area, but in general if a building isn't permanently fixed to the ground it won't need planning permission unless it blocks a neighbours light or view or isn't too tall. I've found my local planning office can be very helpful as they know all the technicalities and if a minor change means it doesn't need permission they'll point it out as this reduces their workload, a bit of self interest on their part. John
  6. Hi I use a Manfroto geared head that has the large 410PL QR plate with a rubber top surface that grips very well. Doesn't twist at all. If your using something with a small QR plate that could be different. John
  7. There's some on eBay at £214.00 plus £7.99 shippingand they're showing 2 available. 80mmED spotting scope telescope. SALE PRICE. SAVE £125 on eBay, also, Telescopes, Binoculars Telescopes, Photography (end time 30-May-09 17:33:53 BST) John
  8. Ultimate 6mm lunar eyepiece.....6mm Ethos John
  9. Hi Glad to see the old LB 16" is getting some good use. John
  10. Removing the lens cell to clean the optics is as easy as mentioned in the previous post. One thing not to do however is to wipe any dust from the inside of the tube as this can leave marks or streaks on the non-reflective coating that can't be removed. Just blow the loose dust out. John
  11. Decision made, I've just picked up a Televue 22mm Panoptic on eBay for £140.00. It's a bit shorter focal length than I was originally looking for, but after reading reviews the 22mm seems to be considered by many as one of the best Panoptics ever made so it'll do nicely. John
  12. Looks like Meade is having yet more problems with this scope, and it looks like it's now been delayed again until at least this autumn. They also now say the 1299.00 version will be an SCT and the ACF will be an extra 200.00. Makes you want to run out and pre-order one doesn't it (not) John
  13. Why mess about, get an A&M RC600 Ritchey Chretien scope and mount. They make more than just carbon tube APO's. John
  14. I suppose I could always wait until Televue releases a 22mm Ethos, but seriously I just bought a new 10mm Ethos so I have to watch my eyepiece budget for a little while. John
  15. I have to admit I'm very tempted, but I'd have to sell my new OMC140C Deluxe (carbon tube 1/9thPV and 0.989 Strehl), which I had to wait a long time for, to be able to buy it. Oh well. John
  16. Alt-Az mounts are great but limited to short exposure times unless you get a wedge. You mention concerns about aligning the scope, but if you do want to get into astrophotography there is no real way to avoid it. An 8" SCT or 8" newt on an EQ mount are a good way to get into astrophotography on a reasonable budget and want more than a 6" aperture. The Celestron Advanced Series C8-SGT (XLT) or Celestron C8-NGT or Skywatcher EXPLORER-200P HEQ5 SynTrek etc. come to mind. I'm sure you'll get plenty of other suggestions about what to buy. John
  17. If that's not small and cute enough there's Celestrons new FirstScope 76mm Dob. At £47.50 plus an extra £15.00 for the eyepieces and finder pretty cheap. Optical Design : Dobsonian Reflector Aperture : 76 mm (2.99 in) Focal Length : 300 mm (11.81 in) Focal Ratio : 3.95 Eyepiece 1 : 20 mm (0.79 in) Magnification 1 : 15 x Eyepiece 2 : 4 mm (0.16 in) Magnification 2 : 75 x Weight : 69 oz (1956.12 g) John
  18. Funnily enough the missing issues 2 and 3 turned up at noon today just as I was about to call them again. Better late than never I suppose. John
  19. It looks like the Aero would be the best "budget" choice then. Idealy it would be the 27mm Panoptic but do I want to spend that much? Decisions, decisions??????? John
  20. Yes I read the review, and the Aero does seem to be a very good eyepiece, but the Baader Aspheric should be better. If only I could find a review. John
  21. Baader Hyperion Aspheric 31mm or Skywatcher Aero ED 30mm ? Thinking of buying a new 30mm eyepiece and the Baader Hyperion Aspheric looks prety good for the money, and I would expect it to be better than the cheaper Skywatcher Aero in a faster scope but is it? To be used in a f4.6 and f6 scope. John
  22. Hi I recently bought a CN6-GT which has the same OTA except for the colour and tested the OTA before selling it (I bought it for the mount) and there was no problem with vignetting at all. John
  23. Have you got a few million quid (probably tens of millions) available to set it up? Seriously the precision required and complexity of actually implementing this type of system means that only a couple of major observatories worldwide can afford it. This link will lead you to more info: http://en.wikipedia.org/wiki/Very_Large_Telescope#Interferometry_and_the_VLTI You might be able to get this book from your local library. The Very Large Telescope Interferometer - Challenges for the Future A JENAM 2002 Workshop, Porto, Portugal, 3-5 September 2002 Garcia, P.J.V.; Glindemann, A.; Henning, Th.; Malbet, F. (Eds.) Reprinted from ASTROPHYSICS AND SPACE SCIENCE, 286:1-22004, 332 p., Hardcover ISBN: 978-1-4020-1518-2 John
  24. You can buy the whole foot asembly and mounting for £14.99 delivered http://www.opticstar.com/Run/Astronomy/Astro-Accessories-Telescopes-Ascension.asp?s=3676be79-9a69-45f6-989e-5aecfdde779a&p=0_10_5_1_1_56 John
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