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http://www.telescope.com/jump.jsp?it...rID=237&KICKER
Interesting variation on normal Chinese focuser. This is probably a good idea. I figure if Stellarvue can claim improved achromatism for their 80mm (with the latest Dyer review in Sky and Tel "confirming" it) there is definitely room for another scope to bridge the gap between the Chinese achros and overpriced American/Russian/Taiwanese made products. -Rich |
#2
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wrote in message
news ![]() http://www.telescope.com/jump.jsp?it...ath=1%2C2%2 C 4%2C13&KickerID=237&KICKER Interesting variation on normal Chinese focuser. This is probably a good idea. I figure if Stellarvue can claim improved achromatism for their 80mm (with the latest Dyer review in Sky and Tel "confirming" it) there is definitely room for another scope to bridge the gap between the Chinese achros and overpriced American/Russian/Taiwanese made products. -Rich It will be fun to watch. Regards SV, the problem is you never know what Stellervue is doing to reduce the color. For a while they were stopping down the aperture (see Ed Ting's review). Then they went to applying an MV coating to the objective and calling it a "proprietary" and "attenuated design" rather than admitting they were filtering it. The last SV I saw had an MV filter applied to the objective, but the owner insisted it didn't because SV had told him so. Aside from filtering or stopping down the aperture, unless you use different (and more expensive) glass, you aren't going to reduce the color, regardless of the "zonal control" g you achieve. Clear Skies Chuck Taylor Do you observe the moon? Try the Lunar Observing Group http://groups.yahoo.com/group/lunar-observing/ |
#3
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"
Regards SV, the problem is you never know what Stellervue is doing to reduce the color. For a while they were stopping down the aperture (see Ed Ting's review). Then they went to applying an MV coating to the objective and calling it a "proprietary" and "attenuated design" rather than admitting they were filtering it. The last SV I saw had an MV filter applied to the objective, but the owner insisted it didn't because SV had told him so. Aside from filtering or stopping down the aperture, unless you use different (and more expensive) glass, you aren't going to reduce the color, regardless of the "zonal control" g you achieve. Clear Skies Chuck Taylor Do you observe the moon? Try the Lunar Observing Group http://groups.yahoo.com/group/lunar-observing/ Chuck: You're way behind the times and terribly misinformed there my friend. The "stopping down the aperture" scenario affected ONLY the first 6 months of scopes produced and Vic indicated to his customers (I was one of them) that there existed a problem with the 1 1/4" version (NOT the 2" focuser version). Once the problem was resolved, he allowed customers to send back their scopes for a retro-fit. For free. This was WAY back in 2000. Very, very old news. Now, as for the "attenuated design", this applied ONLY to the 102D and not any of the other scopes Stellarvue produced. Sorry to disappoint you there. The website, group site, and Stellarvue all indicated that the minus violet coatings were only appled to that specific design (102D) with the intent of reducing color. The latest version does not have this coating, as Vic decided that it's easier (and less expensive) to simply offer a filter that provides the same affect. It was an interesting design and apparently worth the effort given the reports provided by purchasers of the scope. Again, you're a bit behind the times. Try doing your homework before posting something intended to be informative. David |
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there is definitely room for another scope to bridge
the gap between the Chinese achros and overpriced American/Russian/Taiwanese made products. -Rich Let me get on my soapbox for a bit here. Yes, we all want stuff for next to nothing, but this will ultimately have a heavy social cost. When we produce a telescope here in the US and sell it, it is not "overpriced" with respect to its actual production cost. A large part of this cost is the result of paying prevailing wages to our employees (somewhat lower here in the Midwest than in other areas). We also pay all local, state and national taxes which go towards the maintainance and upkeep of our community as well as the nation. In addition, our employees contribute, through their taxes, to the welfare of our nation. They also purchase food, shelter and transportation which helps to employ another whole raft of workers, who in turn help to support their communities. For each manufactured product made domestically, it has been estimated that 4 times as many people are employed locally and 6 times as many outside service businesses are used as part of the manufacturing process vs. an imported product. In other words, a large portion of the incoming revenue stays in the community. With an imported product, the majority of workers, suppliers and national governments that benefit from the production of the product are all foreign. Lastly, as a legitimate business in our community, we want to and have to abide by all local, state and national regulations that govern manufacturers. We would not pay slave wages, nor would we discriminate, nor would we pollute our air and waterways to make a product cheaper. In the short run this would leave more money in the consumer's pocket, but in the long run, you would all be living with filthy air and foul water, not enough money for basics, and little or no opportunity for a large majority of citizens. Little things add up. In our case, we use CNC machines to cut metal and glass. It would be a whole lot cheaper to dump waste oil from these processes right into the ground or into a nearby creek. Instead we pay a hazardous waste handler to recycle these products. So next time you think you're being ripped off, remember that domestic businesses have an uphill battle against foreign producers. We pay our full share to our own communities. We all are trying to do things right - nobody is trying to rip anyone off. Roland Christen |
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Do you mean to say that you and your employees (including spinoff work) are
in this to make a living? You are not doing it as a charitable/slave driven effort to provide refractors for the price of an equivalent sized reflector? Boy, do I smell capitalism as a partial reason for your scopes! BFG George Clear skies and good health "Chris1011" wrote in message ... Big snip of a simple economics explanation So next time you think you're being ripped off, remember that domestic businesses have an uphill battle against foreign producers. We pay our full share to our own communities. We all are trying to do things right - nobody is trying to rip anyone off. Roland Christen |
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#9
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Chuck,
Regards SV, the problem is you never know what Stellervue is doing to reduce the color. When I look through my Stellarvue 80/9D and then pop the same ep in an 8" dob, or take a look through a big Tak, etc., I realize that there are important differences - but, I also realize that my view is pretty darn good - sometimes as good, or better. Frankly, I don't really care what they're doing to get rid of color, improve contrast, flatness, etc. If you feel the SV claims were misleading, false, whatever, why not contact Vic Maris? Certainly SV's copy is a whole lot more straightforward than what Orion is putting out. (I'm only referring to the past year - didn't know they existed before that.) Cheers, Gary Fuchs |
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If you feel the SV claims were misleading, false, whatever, why not
contact Vic Maris? Certainly SV's copy is a whole lot more straightforward than what Orion is putting out. (I'm only referring to the past year - didn't know they existed before that.) This group has had an intimate relationship with SV and Vic Maris. You might do a google search concerning the SV 102 EDT and the mystery glass. You might discover the actual reasons why the SV 102 EDT had such a short run. It is impossible to say at this moment whether Orion is blowing smoke with this latest scope or not. Until someone actually tests one of these, it is no one can say. In the past they have been straight shooters and responsible for some interesting designs that have marked significant advances to the budget minded astronomer. jon |
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