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Everything posted by GuillermoBarrancos

  1. The general rule is that when you start getting below F/5, you will need better "premium" quality EP's. Tho it varies from person to person in how distracted you get from sertain optical errors that will start to become more prominent in cheaper EP's at fast focal ratios.
  2. The ST80 has ofcourse more aperture, so is less likely to run out of guide stars in sertain situations. The mono version is more sensitive than the color version, but also a bit more expensive. Tho, the couple times I used my color version for guiding back in march, I never ran out of guide stars so far. If you have the Budget, then go for the mono Version. Otherwise go for the color Version. Both are fine cameras.
  3. The kicker here is, that these "are" the clip filters for DSLR cameras on TS. I am not talking about the regular CCD filters. That is a Whole different Territory.: http://www.teleskop-express.de/shop/product_info.php/info/p6651_Astronomik-CLS-CCD-Clip-Filter-for-Canon-EOS-cameras-with-APS-C-sensor.html So I Guess they just did some changes in their filter lines, as TS is describing. I don't know. But I think we are derailing the OP's topic and the fine image he took With his camera and his New filter. Don't you agree?
  4. No problem. The reason why I commented earlier is, that I read the following part a while ago on TS website regarding the Clip filters of Astronomik. This might also be the reason why the OP bought the CCD CLS filter: We offer for Photography only the CCD Filter of Astronomik, not the standard line. Astronomik has re-designed all their photographic filters. The new CCD Filters of Astronomik are Halo-Free. The little bit cheaper standard filter of Astronomik without "CCD" are not optimized for photography. Hence, my response earlier regarding the non-CCD vs CCD type filter.
  5. The EdgeHD series have Mirror Lock. The regular SCT's indeed don't have it. But as Chris said, the SCT's from Celestron don't have that much of flop/shift really compared to some other brands. My 8inch SCT didn't had much when I had it years ago. Replacing the Stock focusser with the 10:1 focusser is a very Nice Upgrade tho! It will make fine focussing much easier. I never got around doing it with mine at the time. I personally don't like the idea of putting a Crayford focusser on the visual back. It adds a lot of extra weight on the back, making the scope back heavy. Tho, when you use the SCT in a serious imaging rig and want motor focus. Then yes, there is no other way around it, then using a crayford focusser.
  6. I liked mine when I had it With my SCT some years ago. But as has been said, they don't work very well in the alternative configuration. So I feel that part is just more of a gimmick really. But for the rest, they are excellent EP's for the Money!
  7. The light Balance thing is actually very interesting. Especially for people who are split between going for fully astro modded or baader filter modded camera. As you still need a LP filter on both, there is then no reason then to not go for the Fully Astromodded camera (which is cheaper too).
  8. But it's not just that. I also read that the CCD version is a better LP filter overall.
  9. Ehmm. Check the OP carefully again and see which camera he has.
  10. What I like about these Orion dobs, is that they can be fully dissassembled (base included) and that (if you are interested) you can get a matching case set, to store everything away safely and for easy transportation.
  11. I bought this one from TS alongside my QHY5L-IIc. It has a 1.25" helical focusser, so the camera fits right in. http://www.teleskop-express.de/shop/product_info.php/info/p4064_TS-50mm-straight-viewfinder-and-mini-guiding-telescope-with-bracket-and-1-25--focu.html Tho, Modern Astronomy (who also sells the QHY cameras in UK) also has finder guider packages available. So you can check there too.
  12. You can definitely use it for observing. Tho your collimation skills need to be up to snuff and it will be more demanding on your EP's. ( I.e. A lot of the (custom) truss dob designs are also F/4. )
  13. If I would buy a large newt like that for imaging. I would buy the Carbon fiber ones, like TS/GSO CF or the SW Quattro CF.
  14. There is actually already a Whole discussion about this New Celestron Scope here: http://stargazerslounge.com/topic/213716-new-celestron-rowe-ackermann-f22-astrograph/
  15. I wouldn't use an OAG on a small newt nor a refractor to be honest. OAG's are mostly used when imaging with long focal length imaging, due to guiding being much more critical.
  16. You can buy a QHY5L-II for a lot less.Best bang for buck you can buy atm.
  17. A lot of people with multiple scopes do that actually. So not really overkill. It would be more overkill to buy yet another scope for just guiding.
  18. Startravel is een achromat. Hence, indeed the huge price difference. So no. Not really suited for imaging.
  19. I just hate diffraction spikes. /sigh So when it comes to imaging, I am stuck with refractors and SCT´s.
  20. Yes you can see it here: http://www.firstlightoptics.com/optical-tube-assemblies/celestron-c8-xlt-optical-tube-assembly.html It´s actually slightly above 5kg with the finder and dovetail bar. It is really a nice scope. I had one myself for several years. Really loved it!
  21. I already have a list of 3 potential CCD candidates. G2-8300, G2-4000 and 460EX.
  22. Man Man.... what a work! The more I read..... the more I keep saving up for a Nice mono CCD camera instead.
  23. Dewshields like the Astrozap should be very stiff. Stiff enough to hold a light plastic bahtinov mask in place without flexing. So, depending on the type of dewshield and bahtinov mask you have. Trial and error and see how it goes. But in 99% of the cases there shouldn´t be any problem. Bit cumbersome too, especially when using dewshields with heaters, to continiously have to remove the dewshield to focus with a mask.
  24. Reading through that page suggest they use the Outer Shell of the Celestron Nexstar Imager and the internals of the SPC900NC, which is now a very old CCD sensor. Tho, you should still be able to produce very decent images with it. So I would continue on using it first, till you get the hang of it. Stacking and Processing. Etc. The QHY5L-II will definitely be an improvement over this camera yes. This CMOS sensor has a very high sensitivity and high framerates.
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