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johninderby

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Everything posted by johninderby

  1. Stock focuser on the 6” is the standard GSO crayford. The 8” gets the better monorail focuser. Stock focusers is OK but thoughts turn to upgrading it in the future. A Baader Steeltrack will fit the 6” although unlike the 8” needs one of the extension pieces to allow the drawtube fit.
  2. The StellaLyra 6” Classical Cassegrain arrived this aft. First few pics. No cheap finder or diagonal thank goodness. Just a few focuser extesnion pieces.
  3. Look what just landed. Will start a new thread “Show Us Your StellaLyra Scope”
  4. Bresser has just released a new 6” dob that looks really interesting. Very well specced and proper big bearings as well. https://www.telescopehouse.com/bresser-messier-6-planetary-dobsonian-telescope.html?utm_source=Telescope+House+Newsletter&utm_campaign=1a0ac02580-Bresser-messier-planetary-dobsonian-6-inch&utm_medium=email&utm_term=0_2ccd288edb-1a0ac02580-29670257&mc_cid=1a0ac02580&mc_eid=61c9481f7e
  5. The AZ5 is a good manual alt-az mount. Learning your way around the sky takes time but just take it slowly.. This is a great book for finding your way around the sky and worth every penny. https://www.firstlightoptics.com/books/turn-left-at-orion-book.html The AZ-GTi is a modern mount and very popular. It has WiFi and you control it with a smartphone. The old Synscan mount has been around for many years and doesn’t have the features the AZ-GTi mount does. The AZ-GTi can also be used as an EQ mount with a few optional extras. A GOTO mount needs aligning before it can start tracking so that’s a skill to learn. https://www.firstlightoptics.com/sky-watcher-az-gti-wifi/sky-watcher-explorer-130ps-az-gti.html The tripod is the weak link with either scope and getting a heavier duty tripod will make it much more stable. https://www.firstlightoptics.com/skywatcher-star-adventurer/sky-watcher-38-stainless-steel-tripod.html
  6. Yes the secondary mirror is centre spotted. The mirrors are excellent. Compared to a Skymax 180 the image holds up better at high magnification so very high magnification is usable in good seeing.
  7. I too always found French easier than German. English is a West Germanic language that originated from Anglo-Frisian dialects brought to Britain in the mid 5th to 7th centuries AD by Anglo-Saxon migrants from what is now northwest Germany, southern Denmark and the Netherlands.
  8. And SCTs and Maks? Edit: Came accross this on CN re: the C8 SCT. With 140mm of back focus, the C8 is effectivly working as a 6.7" telescpe with about a 38% obstruction.
  9. Yes a fromt dust cover is included. The mask for the GSO 8” RC should be fine. https://www.ebay.co.uk/itm/Bahtinov-Focus-Mask-for-GSO-8inch-f8-Ritchey-Chretien/293063648538?hash=item443bf4651a:g:BZ4AAOxySE9Q8-dS
  10. Might be a good idea to split off the technical discussion into a new thread as while very interesting this is FLOs thread about their new scopes. Have learned a few things from the discussion though. Look forward to reading reviews of this scope by new owners and their real world experiences. Whatever the technical points are the 8” just plain gives great views. EDIT: Currious about the effective aperture of other scopes such as the various SCTs and Maks.
  11. Distance between primary and secondary is about 410mm measured from surface of primary to aproximate position of secondary.
  12. Just measured the primary mirror as best I could with it in place and estimate it’s about 204mm in dia.
  13. No way is ot only 7.3”. The guy who came up with the 7.3” calculated it rather than properly measured it and simply got his sums wrong not being familiar with the Classical Cassegrain design I assume.
  14. Looking forward to a comparison between the 6” & 8” CCs mounted on the AZ100.. Just checked the forecast and looking promisimg for Wed and Thurs night.
  15. Specs from the Orion US site for the CC.
  16. Or another contender. https://www.firstlightoptics.com/stellalyra-telescopes/stellalyra-8-f12-m-lrs-classical-cassegrain-telescope-ota.html
  17. Easiest thing is just to use a cheap plastic mirror star diagonal and cut the front and eyepiece barrel off.
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