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Post by jamesling1000 on Jun 14, 2012 22:18:42 GMT -5
James, each one of these Raycorr types will be released in 3 subcategories, namely for F5 to F7,9 F8 to F9,9 F10 to F15 Than each one of these will have 3 models, for under, over and 0 correction. So each Raycorr line will be released as 9 separate models covering all scopes from F5 to F15, over corrected to under corrected optics. I hope this explains. We may not be able to release all of these models in Raycorr APS4 this year, but we will offer at least the F5 to F7,9 first. cheers, Ales Hi Ales... Thanks for the information.... And looks like I need to wait for next year for my 8" ISTAR F9 to go with your RayCorr... But again, will you or Mike be able to advice us , on which type to use, especially in our non ISTAR models? I have the skywatcher or also know as C150R F8 model, and definitely I think to have just one Raycorr for both of my scope.... (one is F9 and another is F8) REgards James Ling
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Post by Mike on Jun 17, 2012 19:26:55 GMT -5
James, since it would not be practical or possible for us to test the Raycorr on so many different brands we'll no doubt have to depend on some outside help. I'll think you'll make a fine beta tester James
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Post by istarmullet on Jun 17, 2012 20:13:55 GMT -5
I have asked this question multiple times and still have not received a reply: Will it work on my ISTAR 150f15?
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Post by Mike on Jun 17, 2012 22:12:19 GMT -5
In Ales post on 6/14 he states there will be a model for focal lengths of F10 to F15. Using the Sidgwick standard your 6" F15 still falls at 2.5 which contains filterable levels of CA. I would say using the Raycorr will put you beyond that level with no or barely detectable CA. We will be testing the Raycorr on every model we make. Careful observations and imaging will be done and that data made available to all our potential customers so they can make an informed decision. You guys have been very patient and we certainly appreciate it. Just know that we are just as anxious to release the Raycorr as you. Everyday we get closer...
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Post by jamesling1000 on Jun 18, 2012 1:16:46 GMT -5
James, since it would not be practical or possible for us to test the Raycorr on so many different brands we'll no doubt have to depend on some outside help. I'll think you'll make a fine beta tester James Hi Mike.... Definitely I want to get the ISTAR Raycorr F8 to F9.9 for my 8" F9 ISTAR. And at the same time, I will test it over my C150F8 sky watcher. My home setup is ready, with the balcony facing West, and my TV and 2 vixen CCD, as well as my 550D SLR are just waiting for the RAYCORR to arrive for testing...... Regards James Ling
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Post by Ales - iStar Optical on Dec 6, 2012 7:51:24 GMT -5
You are absolutely right. The first version of Raycorr LT3 is finished design-wise and we are now sourcing the glass blanks and designing a very special housing. The housing will be all metal with most inner parts made of brass. There is no better material than brass in combination with optics but most people dont use it because it is first of all expensive and heavier than aluminum. We hope to produce first few prototypes by first quarter of 2013 and if everything works out as planned we will produce first 100 sets by middle of second quarter 2013. All this can possibly go sooner but I rather stay on safe side since we had to postpone release of these more than once.. also, the Raycorr PRO6 is also done design wise but we will have to seel these only to people who do not observe under cold weather. There is a cemented doublet in this design (which can not be replaced.. unfortunately) and the thermical properties of both glasses are not exactly matching. So this type of Raycorr will work only from ca. +5°Celsius to +30°Celsius. Anything below freezhing point will affect the performance. Well, we are still working around this issue, we play with oil spaced version and when this is released I want ti to be the best we can offer... the Pro version wont be on the market until third quarter of 2013. By the way the LT3 model is 3 element design and will offer visual APO or near APO performance at around center (ideal for planets, binary stars, small DSOs, etc..) than further away you get from center the quality will change into Semi APO with some CA visible. On the other hand if we manage to sell these at below 500 it will be great, possibly even less but I will know more in about two month time. All depends on quantity made, low quantity (up to 100) dictates high price, if we sell thousands than the price would drop considerably. I hope this info helps, cheers, Ales
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Post by jamesling1000 on Dec 11, 2012 20:26:35 GMT -5
Hi Kunana....
The raycorr LT3, is what it needs to put into your Istar Perseus AT 150 F10, that I seen today in your other post....., to deliver APO performance.......to this already long F10 scope.....
Hi All...
I am also eagerly waiting for the release of raycorr LT3 that Ales just given us the latest update that it should be available by end of QTR 1, 2013....
I have both the Istar 8" F9 and C6R F8 , to be tested with this raycorr LT3, when is available....
As Ales has mentioned earlier, the temp operating range is the only problem that is holding up, the holder design.... For me, living in equatorial region, with lowest temp never fall below 20 deg C, so it will be a good new product to be introduced here.....
With the Istar 8" F9 already performing at such a great level, with the raycorr LT3, I am sure the CA will be almost or completely eliminated.....
Regards
James Ling
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Post by Ales - iStar Optical on Dec 12, 2012 2:25:13 GMT -5
Dear James and friends, The LT3 design is finished and the working temperature range is from -15°Celsius to + 35°Celsius. No limitations for most users. The problem is with Pro6 design which is much better optically but substantially more expensive version of Raycorr. The Raycorr Pro6 has a cemented doublet inside which can not be replaced by an air space. And the thermical properties of both glass types are not matching so the usable range for this type of Raycorr would be only from little above freezing point to approx. 27°Celsius. But we did not give up yet, we are playing around with an opil spaced design, etc.. we wont release anything until we are sure that its perfect for the money we ask for this corrector. best regards, Ales
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Post by jamesling1000 on Dec 13, 2012 1:36:28 GMT -5
Hi Ales...
Thanks for the reply that the LT3 design is ready and now probably is going for the proto type build.....
And hopefully, the 1st few sets of samples are for F8 to F10...... And I wanted to be the 1st few to evaluate your products for my 8" ISTAR......
I have not decided to sell away my C6R F8 OTA, as I would also like to see how well the LT3 will go with the achro, and if it is near or even better than the recent 6" ED APO that I purchased for a lighter scope to setup whenever I want to..... and with the good result , I am sure your product will sell like hot cakes....
Hopefully, you will keep us update every month, beginning 2013, as all of us are excited over your product....
Regards
James Ling
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Post by Ales - iStar Optical on Dec 13, 2012 2:15:24 GMT -5
Hello again dear James, you are more than welcome. Regarding control of CA on different scopes, it is yet to be seen. As you already know, these units were made to match with all R30 and R35 Anastigmatic ED Doublets but they will work with all other achromatic doublets on the market to a certain degree. Regarding comparison to the APMs ED doublet, if you dont see any color in your doublet on bright objects all the way to the edge, than combination of LT3 and R35 wont outperform this lens by any stretch of imagination. But we should be getting similar results when you couple e R35 and R30 with Raycorr Pro6 which is still in design development stage, but nearly finished as per word I got from our optician last night. And YES, you will be one of first few people testing our new LT3 corrector (dont expect mirracles with this inexpensive three element unit). But it should do well with what it was designed for.. observing of planets and smaller DSOs, possibly binary stars, etc.. Have a great day, talk to you soon, cheers, Ales
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Post by istarmullet on Dec 14, 2012 19:41:16 GMT -5
If you need another tester, I have the Perseus 6inch f15..let me know. Ready to purchase as well.
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Post by delorme on Dec 21, 2012 2:06:16 GMT -5
Hi Everybody I'm De Lorme , Is there list started yet for the Raycorr? If so could you direct me to it? Thanks for the help. De Lorme
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Post by Ales - iStar Optical on Dec 21, 2012 3:39:01 GMT -5
Hello DeLorme, welcome to Istar Scope Club. Regarding Raycorr Pro6-V we are done designing it and we are now in first stages of production, glass blank searching, etc... we should have first prototypes by spring 2013 and we will start taking pre-orders as soon as we have the exact price. Check out the spot diagram comparison between Raycorr with R30 anastigmatic doublets and other types of lensees like classic achromat in same F-ratio, CaF2 Fluorite doublet, CaF2 Fluorite Triplet, etc.. you can clearly see that our newest Raycorr Pro6-V clearly outperforms even CaF2 Fluorite doublets and performance is very near true APO. We will introduce these in a user friendly kit. No guess work involved while setting this corrector up. You simply slide it inside your 2,5" focuser and you are good to go with your observing... best regards, Ales
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Post by delorme on Dec 21, 2012 11:02:37 GMT -5
Hi Ales, Thanks for reponding so quickly. Well all I can say is LONG LIVE ISTAR!. Your going to make a lot of people very, very happy. Is there a list I can get on. Would you like a deposit? Where do I find the spot diagram comparison in the forum? Thanks much! De Lorme
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Post by Viktor Z. on Jan 14, 2013 18:48:13 GMT -5
Hi Ales,
My new Istar 6" r30 is a great scope! It is interesting thread about raycorrr, and yes, I definitely want to be on the pre-order list, too. Do you already know if the raycorr requires additional in- focus or out-focus?
Viktor Zsohar
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