Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_2019_sp_banner.thumb.jpg.a0ff260c05b90dead5c594e9b4ee9fd0.jpg

CanesVenatici

Members
  • Content Count

    78
  • Joined

  • Last visited

Community Reputation

11 Good

About CanesVenatici

  • Rank
    Nebula
  1. http://www.theguardian.com/science/2013/nov/28/comet-ison-sun
  2. Must admit that as a one-time 'WIS' (Watch idiot savant) that made me smile, especially the bit about lasting a lifetime. A mechanical watch migh have the potential to last a lifetime, but it will need regular and expensive servicing. Although all the Swiss manufacturers play much the same game, Rolex are one of the worst for fleecing thier customers once they have bought a watch from them. Rolex have introduced many restrictive trading practices, including refusing to sell spare parts to anyone who is not a part of their own network, and a basic service will cost £500 upwards and be needed every 3-4 years if the watch is to keep anything like good time. For a watch with a chronometer function the cost could be almost double this! Tales also abound of Rolex refusing to work on a watch that has been worked on outside their network, or demaning that every part they they deem was non-original be replaced. In one case I saw Rolex refused to repair a watch unless the customer agreed to them replacing the after-market strap with a Rolex bracelet, as had originally been fitted to the watch, at a cost of around £1000! The Swiss watch industry is fascinating, a real triumph of marketing over sustance! Anyone intrigued by the novelty of a clockwork mechanism would be better served by buying something like a 'Made in Japan' Seiko '5' at a cost of around £70!
  3. Thanks for that Mcavity, now that I know the issue I have noted goes by the name of 'cone error' findng further information will be much easier.
  4. Just a quick update. Before going out tonight I rotated the puck 90 degrees from its factory position so that I could see through the polar scope when the scope was in the home position. True enough, Polaris was just out of my field of view in the scope itself, but easilly spotted through the finder, which I used to do a quick set up of the mount. After this I rotated the mount to the correct time and date position to do the final adjustment via the polar scope and found that it was already just outside its circle. For me this was much easier than trying to locate Polaris from the off via the polar scope.
  5. Thanks for that. So, I was overlooking something! The maximum field of view through my scope is under 1.5 degrees. Next time I will take a look at exactly where Polaris is in my finder, allowing for the needed offset from the pole. Thanks again!
  6. Hi there, I'm just getting back into astronomy after a break, and of course this means getting back up to speed with my polar alignment routine. Whilst doing this the other evening it struck me that it would be great if the finder and scope were perfectly in line with the polar scope, so I could do the basic altitude and azimuth adjustment of the mount via the finder and scope, then only minor adjustments of the mount would be needed to get Polaris spot on in the polar scope. Perhaps things are supposed to be this way, but they aren't with my HEQ5. (The polar scope is correctly aligned with the mount itself). If I could so this I would be able to avoid the problem of finding Polaris via the polar scope, which I often find quite tricky. I can see that it would be relatively easy to calibrate the declination axis to the polar scope by locating a target in the centre of the polar scope, turning the declination axis until this was in line with the target and then setting the scale or marking the mount with a fine line, so creating a 'home' position that was exactly aligned with the polar scope. Problem comes with aligning the saddle to the right ascension axis, as the only way I can see to adjust the 'tilt' of the scope relative to the mount is to shim and /or file the saddle a little. Has anyone done this? I have a feeling that there is some built in error with my set up somwhere as I have just installed the go-to upgrade and, although it does align correctly, it always needs a lot of adjustment, especially for the first alignment star. I am assuming that this is because the software assumes that the scope will be pointing to exactly the same location as the polar scope. Does anyone else have their scope set up this way or am I overlooking something? Thanks for any help or comments!
  7. P.s. I just had a quick look for the post where FLO explained why they don't carry some lines. Before I found it I came across a couple of threads explaining that they no longer offer discounts. I guess that scuppers my theory as to why they don't carry Televue products.
  8. As we all know, retail price maintenance is illegal, and yet is still common, with retailers who sell at ‘discount’ prices finding that manufacturers will no longer supply them. I also recall reading a thread where FLO said that they don't carry some lines as they refused to agree to the pricing terms that the manufacturers / importers were demanding. Putting two and two together, we might have the answer as to why Televue have felt that they can get away with hiking their prices so much, and also as to why sellers like FLO don't sell Televue products.
  9. Hi there, good to see that FLO is always on the look-out for new lines. I can confirm that the true adjustment on these seats is 39-89 cm, once you have unscrewed the two small plastic stops, one on each leg. I would recommend lightly dressing the holes where the screws hold the stops in place with a small round file to remove any burrs as the sliders are a tight sliding fit on the legs. Oh, and the chair is marked as having a maximum working load of 110kg. I'm still impressed with mine.
  10. Nice review, but I would still that that the following is a far better option. What's more it costs only a few quid more for something that is primarily designed for use in industry and was made in Germany, rather than being knocked up in China, probably for a couple of quid! http://stargazerslounge.com/astro-lounge/159674-observing-chairs-another-option.html
  11. To me a 'counterfeit' is something made in a different factory to the original, but which claims to be identical in all ways to the original, including place of manufacture, and is sold as such. In such terms the TMB 'clones' are hardly counterfeits. Having read some of the discussions relating to the manufacture of 'TMB' eyepieces, it seems that the term 'Genuine TMB' is, like 'Plossl' or 'Newtonian', effectively little more than a designation of the design, not a guarantee of quality or place of manufacture. Some have argued that the factory that first made these for Thomas Back did so under the understanding that they could also independently market eyepieces of that design in order to defray the tooling costs and so forth. It has also been argued that Thomas Back was quite happy to see eyepieces produced by others as a 'TMB' design, just as one sees 'Plossl' used. I can also see how the estate of Thomas Back would like to reclaim 'ownership' of the 'TMB' label / design. Perhaps more important from a user point of view, and as one of the other threads linked to on here has noted, there appears to be no discernable difference in quality between those eyepieces currently sold via the marketing company TMB Optical, and the 'clones'. In fact, the only eyepieces that have been reported as being shoddy were some of the 'genuine' versions, such as the 6mm. I also fail to see why a 'TMB' that is not marketed via TMB Optical should be necessarily inferior, especially given that they are probably made side by side on the same production lines. In my experience even cheap generic Plossl eyepieces cannot be dismissed as having 'zero QC and bare minimum production standards'. By the way, I have an 8mm TMB 'clone' and it is a perfectly good eyepiece, well worth the price paid. I have also bought some other stuff from Alan as 'Skys the limit' and would have no doubts about buying another of these eyepieces from him.
  12. I would be tempted to say that the proof of the pudding is in the seeing. So I would take a peek though it first to see if you think it is worth what you paid for it, and keep it if you think it is.
  13. Well, that and following the two golden rules of the American business model: screw down your costs wherever possible and charge not a dime less than the market will bear!
  14. Their reticence is probably understandable given that they wouldn't want to say anything that might undermine the perceived value of their products, and so their doubtlessly healthy profit margins. (Especially given the low cost of skilled labour in Taiwan, at around $7000 / £4,500 a year). It also quite possibly means that most 'Televue' branded eyepieces are actually made by Guan Sheng Optical employees! It does seem that Vixen in Japan have also made some stuff for Televue in the past, so they may still be the source of those 'Televue' eyepieces marked as being made in Japan. From what I have been reading, the only Televue eyepieces ever made in the USA were the original 1979 'Nagler' prototypes. And to think, to many, especially over on the Cloudynights forum, Televue is an all-American product! (Even on Cloudynights I have seen a couple of heretics question why the price should be so high for a product made in Taiwan. The primary answer is, of course, the maximisation of profit. However, from what I have read most posters over there seem to see this as being a wholly good thing, praising 'Al' for being such a canny businessman. How very American. ). It would also be interesting to learn just how many processes are completed in 'dedicated facilities'. I doubt that Televue is going to let on though.
  15. Interesting. Which companies are involved in making Televue branded products, and what other brands do they produce? When you speak of 'dedicated facilities', does this refer to, say the people who assemble them, or is every machine used - from the CNC machines that turn the bodies to the machines that grind the lenses - only used for Televue products?
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.