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John

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Everything posted by John

  1. A F/6.3 focal reducer used with the widest field 1.25" eyepiece will give you a true field of about 1.3 degrees I think. Not enough to fit the whole of the Pleiades in, unfortunately.
  2. Some great Astro Physics related information and stories folks - thanks very much
  3. That's an interesting point. I know of someone (not a member here) who purchased a couple of Takahashi scopes but very rarely uses them because of concerns that they might get damaged in some way. He has gone to the lengths of also owning Skywatcher ED scopes in the same aperture as well and those are the scopes that get used. That's his choice of course but I think these really nice scopes are meant to be used. I certainly use mine as often as I can !
  4. I have the Naturesport 10x50's and 8x40's. They seem nice performers The 7x50's will make great astronomy binoculars. 8x50 is a good spec too !
  5. I agree re: a UHC filter showing the Veil when it may have been more or less invisible before but the O-III turns it into a spectacle
  6. My 130 F/9.2 has the Kruppax 50 tube. I think the model is the 130/1200 LW. I believe the tube material is the reason that the scope optics do not seem to dew up at all. Even when the outside of the tube is running with it. It is quite hard to track the model history and specs of the TMB/LZOS/APM triplets. Quite a lot were made to bespoke specifications or have been later modified by owners.
  7. @StuF/6 is quite a bit easier to mount steadily I think. The Rowan AZ100 should handle either focal ratio quite easily though. I was strongly considering buying a used Astro Physics Star 120 ED (doublet) a few years ago. It was good nick and priced around £800 I recall. I had recently bought my Skywatcher ED120 though so I was a bit skint and let my "head rule my heart" on that one. It's one of those "I wonder ......" things that I look back on occasionally. My guess is that a used Star ED would now set me back at least twice that amount.
  8. If anyone wants to know more about the company there is an interesting piece on Astro Physics on the Company 7 website: http://www.company7.com/astrophy/index.html
  9. Over the past 5 years Takahashi scopes have been more and more frequently discussed on SGL and I've seen more mention of LZOS optics over the past couple of years as well. Very little discussion of Astro Physics scopes though. On the CN forum, unsurprisingly as AP are a US manufacturer, we see much discussion of their scopes but very rarely do they get a mention on here. Is this because the brand is rarely encountered on this side of the pond I wonder Over the years that I've been in the hobby, Astro Physics is certainly a name that has been prominent and that has always piqued
  10. If you search around the web there are older versions of Stellarium, such as 0.15, are still available which work with Windows XP. There is also "Cartes du Ciel" which I think is XP compatible: https://www.ap-i.net/skychart/en/start
  11. My mate used to have the Prinz version. His was the same as mine except that it was 800mm in focal length. I'm not an expert in these vintage Japanese scopes but I think there were 2 or 3 manufacturers in Japan making scopes that were sold under a wide variety of brandings around the world. Prinz, Tasco, Royal Astro, Greenkat, Swift, etc, etc. This archived webpage is fun - it has links to the catalogues and manuals for a lot of scopes of that era: https://web.archive.org/web/20160131042244/http://geogdata.csun.edu/~voltaire/classics/ Not sure all the links work but some ce
  12. I well remember that night as well - but mainly because I arrived the following morning to find the camp still buzzing with the previous nights observing excitement I seem to recall that it mostly rained for the following nights
  13. Congratualtions ! It looks very similar to my first scope - a 1960's Tasco 60mm refractor. That is stored in a similar looking wooden case too. I dusted it off and did some observing with it last Summer, which bought back some nice memories
  14. Wow ! Fantastic scope Mark, absolutely fantastic Mine is #020 and dates from 2006. The lens bezel ring on mine says F/9 like yours does but the concensus on the CN forum is that these are 1,200mm focal length so F/9.23. Markus told me in late 2016 that they had made 114 of these up to that point so we are up to #133 3 years on so a production of around 8 per year ? Apart from saying TMB rather than APM the objective cell on mine is identical to yours. I'll look forward to reading your reports on how your LZOS 130 performs and maybe comparing notes ? Many congratu
  15. Very nice list of targets covered there
  16. You used to be able to get both 1.25 inch and 2 inch barrel adapters for the Vixen 40mm screw fit eyepieces but they are so long out of production I think you will need to try a "wanted" advert and see if anything comes up. The 2 inch adapter looks like this:
  17. To be honest with you, when I started the thread, I knew it was a very challenging double (more so that Sirius) but I did not know that it was THAT difficult.
  18. Great pic released by NASA a couple of days ago of the Ingenuity Helicopter having survived it's first night on the surface of Mars. If testing goes well it could fly on Sunday 11th April
  19. For the past few nights I've been using my 12 inch dobsonian to hunt galaxies in Leo and environs as reported here: https://stargazerslounge.com/topic/374989-change-of-horse-midstream/?tab=comments#comment-4067516 Feeling a little guilty towards my 100mm refractor that I had so rudely cast aside in favour of the "light bucket" and also that I rather disparagingly referred to as a "Peashooter" in another thread, I decided to see what just 3.9 inches of aperture could do within Leo. I did preface the galaxies with a quick look at the nova in Cassiopeia - it still looked to be hold
  20. Yes - out of production, unfortunately. The most noticeable difference between the 3-6 zoom and the 2-4 (apart from the focal length range) is that the 2-4 has click stops at half mm intervals rather than 1mm. Otherwise they feel and perform the same. I've owned a couple of the 3-6 Nagler zooms in the past. The Nagler zooms are in the same par-focal group as the 24mm Panoptic and a number of other Tele Vue eyepieces - Tele Vue call it their "B" par-focal group. It is around 8mm further out than things like the Pentax XW.
  21. I use the 2-4mm Nagler zoom very often with my FC100-DL. It is a very effective high power eyepiece IMHO. My diagonal for the Tak is the Baader T2 Zeiss Prism. I went for the latter as a result of reading this review by Bill Paolini: https://www.cloudynights.com/articles/cat/articles/mirror-vs-dielectric-vs-prism-diagonal-comparison-r2877
  22. The Ethos range have a wide range of focal plane positions. This post by Don Pensack on the CN forum gives the details but they can make your head spin a bit !: https://www.cloudynights.com/topic/490673-ethos-line-how-much-backin-focus-required/?p=6437723
  23. The older ones. I know the HD5 raises the game but at the price they are, there are other attractive options such as the Rowan AZ100 or the T-Rex which I have now.
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