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plyscope

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Everything posted by plyscope

  1. These new APQ Jena refractors may be the current state of the art for refractor development. https://apq.de/en/ In America the latest development at least for visual observers is the Agema doublets. https://www.agemaoptics.com/
  2. I am not too worried about slow motion controls. With such high quality and precision and the adjustable tension with low stiction I expect it will be fine. Besides I already have the AZ100!
  3. Here is some insight into Takahashi Fluorite triplets and doublets. http://www.astrosurf.com/ilizaso/Takahashi FCT-100/FCT.htm http://www.astrosurf.com/ilizaso/Takahashi FS-102/FS.htm
  4. I found this on Zeiss history; http://www.company7.com/zeiss/history.html
  5. Holger Merlitz has some Astro Physics historical catalogues from the 80's and 90's. http://www.holgermerlitz.de/A-P_database/A-P_catalogs.html
  6. I've not seen a CN 212 but I am a big fan of Ed Ting and his website!
  7. I have owned a TV60 for over 10 years. It is a wonderful scope for travel and quick look viewing. If you only want three eyepieces for the TV 60, I recommend the Panoptic 24mm, the Nagler 9mm and the 3-6mm Nagler zoom. The 3-6mm zoom covers all high mag conditions and allows you to get the best out of the situation. I have used a Vixen HR 2.4mm but there is little gain unless the conditions are absolutely perfect. I think the 4mm Delite would be fantastic however the 3-6mm zoom is just more versatile.
  8. Toshimi Taki from Japan has an interesting wooden tube reflector. http://takitoshimi.starfree.jp/ Thin plywood can be very effective and save weight. I have made octagonal refractor tubes with 4mm and 3mm marine grade plywood. This is a thread from a few years ago on Cloudy Nights. https://www.cloudynights.com/topic/325327-5-f12-istar-refractor-project/
  9. This is an old model from 10 years ago. I wonder if they found some old stock? https://www.cloudynights.com/topic/216156-comparing-go22x85-wo22x70-tak22x60/#entry2765948
  10. There was a bit of discussion on CN but no actual user reports as yet. https://www.cloudynights.com/topic/680211-new-chineese-giant-binoviewer/
  11. Maybe the people at Quicktest could offer advice. https://www.quicktest.co.uk/
  12. You could try this link; https://www.quicktest.co.uk/acatalog/Binoculars.html
  13. Thanks very much Ben for taking the time to share your thoughts and for illustrating the differences with all the photos. My poor old lap top struggled to load them all! It is wonderful to see that some manufacturers are still making improvements to porro binoculars.
  14. Thanks for sharing your first impressions Ben. I too look forward to your comparison. I am particularly interested in the difference in eye relief compared to the 10x50 MX. Many years ago I had a different brand 10x50 equivalent to the MX and enjoyed it very much except for the large eyepieces becoming uncomfortable after a minute or so. A little more eye relief would make them so much easier to live with.
  15. I have one of these since they came out a couple of years ago. It is very well made with great coatings. The field stop is a little fuzzy and it is does not have very good edge correction compared to a 24mm Panoptic. Its big advantage is in its lightweight and better eye relief than a 24mm Panoptic. It has no undercut which I like. It is ideal in a lightweight turret setup especially with an f8 or f9 refractor. It is not ideal in fast scopes. If I could choose only one then the 24mm Panoptic is better.
  16. Great review here from Holger Merlitz. http://www.holgermerlitz.de/nikon_wx/nikon_wx2.html
  17. You may like to read Ed Tings review. https://www.scopereviews.com/page1ar.html If you can get hold of one then I doubt you will be disappointed. It will certainly be easy to sell it on if you don't like it.
  18. It is a tough call to sell a TSA 102 in pursuit of a lighter FC-100. I can understand the desire for a lighter option. I have owned a TSA102 since 2008 and it has never failed to impress me when the conditions are right. I have no doubt the FC-100 would also be a very satisfying scope in use. I use the TSA on a Vixen GPD2 mount. I also have an FC-76DC since 2014 which goes with a Vixen Porta mount. That is my lightweight grab and go option. If I didn't already have the TSA102 then the FC-100 would be my choice. In the meantime I wait patiently for Takahashi to announce a new FC-125!
  19. I guess the zcf refers to "z" for the light path through the prisms and "cf" for centre focus.
  20. The Takahashi collection. Mewlon 180C, TSA 102S, FC 76DC.
  21. There is a good review with a lot of information on the history of the Habicht 8x30 here. http://www.greatestbinoculars.com/allpages/reviews/swarovski/swarohabicht8x30w/swarohabicht8x30w.html
  22. The Habicht 8x30 is a classic binocular made to very high standards. It shows beautiful sharp stars and is a pleasure to use for astronomy. It is limited by its aperture and I much prefer a good 10x50. I mostly use the Habicht in the daytime.
  23. Some of my favorites; The Book Nobody Read by Owen Gingrich. Fascinating insight into Copernicus and his famous publication and the history of the original editions. Starlight Nights by Leslie C. Peltier. Autobiography of a famous amateur Variable Star observer. The Great Melbourne Telescope by Richard Gillespie. At one time the second largest telescope in the world. Clyde Tombaugh by David H. Levy. Biography of the discoverer of Pluto. The Nobleman and his Housedog by Kitty Ferguson. Wonderful account of the life of Tycho Brahe, previously mentioned by Putaendo Patrick above. Alvan Clark and Sons, Artists in Optics. The history of the great American refractor makers along with a listing of their telescopes and lenses. Epic Moon by William P. Sheehan and Thomas A. Dobbins. In depth history of the telescopic exploration and mapping of the moon. The History of the Telescope by Henry C. King. This classic work still makes great reading.
  24. The Habicht 8x30 is an outstanding binocular with a great reputation. It has been in production for many decades and many subtle improvements have been made over the years. Though it still has the classic feel and charm of a vintage bino. I bought mine new about 3 years ago. It is not my first choice for astronomy as I prefer a 10x50 or 15x60, however it does give beautiful sharp stars and is surprisingly satisfying to use if you have realistic expectations. I would also recommend the Nikon 8x30EII. It is similar with a wider field of view, though perhaps not quite as robust as the Swarovski. Check out this website; http://www.greatestbinoculars.com/
  25. This particular scope is very light for it's length and is balanced as shown in the photo with a 2" GSO diagonal and 40mm Reverse Kellner eyepiece. It is ok on the Vixen GP mount when there is no wind. The long tube can catch the breeze. It is a nice scope for solar observing with an appropriate filter.
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