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Meade 10" Lightbridge

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Meade 10" Lightbridge

Postby defens23 on Sun Jan 16, 2011 10:12 am

My wife bought me this for Christmas. Everyone rants on how great the views are. Maybe it's me but, last night, viewing conditions in NC were great. Temp in 40's, clear sky. Jupiter in southern sky. Took my scope out about an hour before I was going to use it to let it get acclimated to the weather. Lined up Jupiter with the red dot. Was not able to get a clear view with the 2" 26mm Meade eyepiece that came with the scope. So, figuring that maybe it was the optics, I took the 2" out and used my 26 and 20 mm Meade 1.25 super plossls. The view was not any better. Jupiter was still blurry. I can say that I got an amazing view of the moon. But that is not what I want to see with this scope. Supposed to be able to get excellent planetary views along with other celestial sights. Not seeing it. I consider myself an amature but I have an older 6" (real cheap) meade DS-114 scope and I actually got better views with that than I did with the Lightbridge. Something is not right. Help.
defens23
 
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Re: Meade 10" Lightbridge

Postby Jne_K on Mon Jan 17, 2011 11:04 am

Hi

You did good to allow your Lightbridge enough cool down time.

Could be a number of things. Is your Lightbridge properly collimated? You might expect that a new scope would be properly collimated, but not so. Shipping and assembly can cause misalignment. Do you have a shroud for the Lightbridge? If there was a breeze of any kind, that could cause some air currents in the optical path and that can reduce performance. Your DS, of course, needs no shroud. Lastly, there will be nights that are clear and mild, but seeing conditions will be none-the-less poor in terms of either stability, transparency or both and, yes, larger scopes are sometimes more sensitive to seeing conditions than smaller scopes. All in all, I would not place too much weight on one night out. It's going to take a number of nights with any telescope to get a fair reading on performance, assuming everything is in good working order on the scope. Give it a couple more times and let us know your progress.
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Re: Meade 10" Lightbridge

Postby defens23 on Mon Jan 17, 2011 1:12 pm

Thank you for your help. I have considered the fact that it may need to be collimated. I removed the eyepice and visually looked through the optics holder at the mirror. The crosshairs appear to be way off. I would assume that by eyeballing it, the crosshairs you see from looking through the optics holder should be close the the center mark on the primary mirror, correct? Any preference on a collimator tool? Laser, non-laser? As for the shroud, I live in a rural area with little light. Saturday night was quite calm. I will collimate it first and consider the shroud.
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Re: Meade 10" Lightbridge

Postby Jne_K on Tue Jan 18, 2011 10:42 am

Hi

Yes, that is correct. There is a good article on reflector collimation online at Sky and Telescope here. As for tools, I still like the old Cheshire tools, such as the Celestron collimation specialty for scopes that are way out of alignment because it tells you if the secondary or the primary is off. Laser tools are great for less serious cases of misalignment, but they don't pinpoint whether it is the secondary or primary that is off, though most of the time it is the primary. Lasers are, though, much easier to use. Takes a bit of work to figure out how to use a Cheshire, properly.
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Re: Meade 10" Lightbridge

Postby defens23 on Wed Jan 19, 2011 7:19 pm

I wanted to thank you again for all of your help. I have been doing some research over the past couple of days. It appears that many people have issues pertaining to getting a properly collimated telescope using a laser collimator. I am going to give the one you recommended (Celestron collimation specialty) a try first. I'll let you know how I make out. Again, thank you for all of your help.
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Re: Meade 10" Lightbridge

Postby Jne_K on Thu Jan 20, 2011 3:31 pm

You are so very welcome. Please let us know how it goes.
Thanks for posting with us
Joanie K - Your personal optics expert

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Blog: http://blog.opticsplanet.com/
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