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Worked with the focuser this afternoon. I isolated a single problem. The brass nut that turns on the mirror focus rod was binding at the outer edge of the thread. Visual inspection under magnification

Thank you....I believe that is the problem. I think I will remove the focuser and establish a perpendicular with a square and see if I can find a parallel. I'll post the results. I was kinda wondering

The surface that that is machined in the rear casting of the scope is not perpendicular to the mirror threaded shaft. That is why Feather Touch supplies an ‘O’ Ring to put between the Feather

P.S. Make sure the mirror locks are unlocked!

that is not right. 1) remove Feather Touch 2) check the action of the scope focus 3) check the action of the Feather Touch 4) re-install Good luck! Stan

Original focuser was normal and easy to turn. The FeatherTouch is very difficult to turn. The threads on the focuser shaft were untouched throughout the installation and the feathertouch nut turned

no sticker on this one and certainly no screw. I gently drilled through the center with my Dremel and the central screw for the secondary is under it. I am going to have to use my 3" grinder cutting

On my 14 the sticker had to be removed and there was a screw under it. Greg S

Hi guys- have a post 2008 C14 with the tri-lobed rotating plastic alignment screw cover and just replaced the terrible phillips screws with Bob's knobs (actually the allen screws on the older ones

Hi Yasushi.? It makes good sense to check the collimation.? I'd start with a 25 or 26mm eyepiece and defocus a star.? If the blur is circular and the secondary shadow is dead center, then go to the

Hi, I just happened to hear a clanking sound from the reducer. Opening the metal cover I realized the sound came from a front element glass on a rear cell side because the retention ring was loose. I

Thanks Christian! Sent: Saturday, January 21, 2017 11:55 AM To: C14_EdgeHD@... Subject: Re: [C14_EdgeHD] January 14, 2017 Excellent Brian ! It is nice to see your images again :-)

Excellent Brian ! It is nice to see your images again :-) Christian

Excellent! Sent from Mail for Windows 10

I took this photo over the holidays. It was taken from my pasture which is 20 miles from downtown Atlanta. It was taken with a Celestron 11" EdgeHD at its native FL of 2790mm. NGC1931

This is my first Jupiter of this apparition. I finally had good seeing and decided to try my old roof crushed C14 instead of my new HD version, which frankly has inferior optics.

Thanks :-)

Thanks Tim :-) To be honest. I have no idea of the resolution since it depends a lot on the type and contrast of the detail (crater, rile, etc). In any case, it is better than 1 km. Best regards

Excellent! Sent from Mail for Windows 10 Sent: Monday, December 26, 2016 2:18 AM To: C14_EdgeHD@... Subject: [C14_EdgeHD] Digest Number 3629 Celestron's C14s, C11s, 9.25s, EdgeHDs Group 1

More stunning images! Thanks for sharing them. Have you estimated the size of the smallest details you have recorded? Happy Holidays! Tim