Re: Installation of a FeatherTouch SC Microfocuser. Hard to turn focuser knob..fix?
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 shows not burs or cross threading.? It may be that it is engineered to have a tight end. ? I would like to put it on a tap but in the mean time I smoothed and polished the threads.? I put it back together and found that it turns a bit easier.? My final step of screwing in the 3 screws.? I did find that no matter how I tightened them, the focuser became bound.? I ended up tightening just to take out "slack".? Seems OK.? I am anticipating that there may be problems when the mirror is at a bottom position.? I will not really know if the problem is solved until I have a star to focus on.?
Thanks for the heads up on the mounting plate screw issue...it is a very sensitive and requires great care to get right.? I am not sure it should be like this and plan on contacting StarLight instruments and talk about my installation.
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Re: Installation of a FeatherTouch SC Microfocuser. Hard to turn focuser knob..fix?
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 function of the o ring. ?
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Re: Installation of a FeatherTouch SC Microfocuser. Hard to turn focuser knob..fix?
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 Touch and the machined surface that it rests against. You are not supposed to synch the screws all the way down that hold the Feather Touch to the rear cell, if you do you will put a bind on the screw. That is what is causing the tightness. With the ‘O’ Ring you can pivot the flange to the proper alignment. ? What you need to do is back off on the three hold down screws and as you turn the focus knob screw in each screw in its turn. I am assuming of course that you installed the ‘O’ Ring which is necessary. If you detect a bind then tighten one of the other screws.? When you feel you have gone as far as you can stop. Three points determine a plane and so it is with the three screws. Your job is to find the sweet spot by adjusting the screws until the Feather Touch is in line with the threaded shaft. ? I went one further because I did not like the ‘O’ Ring deal I got rid of it. What I did is I drilled and tapped three 6-32 screw holes between the three hold down holes already in the Feather Touch flange. I then installed three set screws that I used in conjunction with the three hold down screws to establish a plane which is perpendicular to the screw shaft. Working the hold down screws against the set screws provided me a very tight positive attitude adjustment for the flange. ? Mine is perfectly in line with the 3/8-24 mirror shaft, no bind at all. ? Gary ? Carpe Noctem ?
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From: C14_EdgeHD@... [mailto:C14_EdgeHD@...]
Sent: Wednesday, August 2, 2017 7:28 AM
To: C14_EdgeHD@...
Subject: [C14_EdgeHD] Installation of a FeatherTouch SC Microfocuser. Hard to turn focuser knob..fix?? ? 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 easily during installation.?? ? Any ideas?
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Re: Installation of a FeatherTouch SC Microfocuser. Hard to turn focuser knob..fix?
P.S. Make sure the mirror locks are unlocked!
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Re: Installation of a FeatherTouch SC Microfocuser. Hard to turn focuser knob..fix?
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
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Installation of a FeatherTouch SC Microfocuser. Hard to turn focuser knob..fix?
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 easily during installation.??
Any ideas?
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Re: removing tri-lobed plastic cover from secondary
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 wheel and cut it in half to remove it . Charles
On Friday, March 3, 2017 4:13 PM, "gspakoski@... [C14_EdgeHD]" wrote:
?
On my 14 the sticker had to be removed and there was a screw under it.
Greg S
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Re: removing tri-lobed plastic cover from secondary
On my 14 the sticker had to be removed and there was a screw under it.
Greg S
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removing tri-lobed plastic cover from secondary
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 were the best) the cover interferes with getting your fingers around the knobs. How to remove it? I thought it would just pop off but nooooo. Thanks Charles
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Re: Celestron reducer lens .7X for EDGEHD 1400
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 highest power eyepiece you use and repeat.? If the shadow is centered, you have great collimation..........Steve Snider
From: "yfukunag@... [C14_EdgeHD]" To: C14_EdgeHD@...
Sent: Sunday, February 12, 2017 7:02 AM
Subject: [C14_EdgeHD] Celestron reducer lens .7X for EDGEHD 1400
?
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 tightened the ring using an?adjustable pin spanner?and confirmed the sound was gone. With that, is collimation adjustment required to gain the original optical performance?
Thanks, Yasushi
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Celestron reducer lens .7X for EDGEHD 1400
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 tightened the ring using an?adjustable pin spanner?and confirmed the sound was gone. With that, is collimation adjustment required to gain the original optical performance?
Thanks, Yasushi
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From: C14_EdgeHD@... [mailto:C14_EdgeHD@...]
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 :-)
Christian
Le 14/01/2017 à 20:36, bgcombs@... [C14_EdgeHD] a écrit?: 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. ? Brian ? ?
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Excellent Brian !
It is nice to see your images again :-)
Christian
Le 14/01/2017 à 20:36, bgcombs@... [C14_EdgeHD] a écrit?:
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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.
Brian
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Excellent! ? Sent from for Windows 10 ?
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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 taken 12-29-16. This is a colorful nebula in the constellation of Auriga. It was taken with an 11" Celestron EdgeHD mounted on an Astro-Physics... | | | | Preview by Yahoo | | |
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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.
Brian
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Thanks :-)
Le 26/12/2016 à 16:20, imager1940@... [C14_EdgeHD] a écrit?:
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Excellent!
?
Sent from
for Windows 10
?
?
Message
1
Sun
Dec?25,?2016 2:31?am (PST) . Posted by:
Dear
All,
Here are some lunar images which have been waiting
for processing on my
hard driver for more than one year...
They were taken on August 8, 2015 with the Celestron
14, a Basler
1920-155 camera and an Atmospheric Dispersion
Corrector (ADC).
Here is a mosaic centered on Copernicus :
The region of Pitatus with rima Hesodius. Hints of
the thin rima inside
rima Hesodius can be seen :
Clavius crater with low sun elevation :
Best regards
Christian Viladrich
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Re: images of the moon taken on August 8, 2015 with the C14
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
Christian
Le 26/12/2016 à 15:59, timlahey@... [C14_EdgeHD] a écrit?:
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More stunning images! Thanks for sharing them.
Have you estimated the size of the smallest details you have
recorded?
Happy Holidays!
Tim
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Excellent! ? Sent from for Windows 10 ?
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From: C14_EdgeHD@...Sent: Monday, December 26, 2016 2:18 AM To: C14_EdgeHD@...Subject: [C14_EdgeHD] Digest Number 3629 ?
Message 1
Sun Dec?25,?2016 2:31?am (PST) . Posted by: Dear All,
Here are some lunar images which have been waiting for processing on my
hard driver for more than one year...
They were taken on August 8, 2015 with the Celestron 14, a Basler
1920-155 camera and an Atmospheric Dispersion Corrector (ADC).
Here is a mosaic centered on Copernicus :
http://www.astrosurf.com/viladrich/astro/moon/closeup/Copernic-C14-B1920-red-8Aug2015-3h40mnUT-450f.jpg
The region of Pitatus with rima Hesodius. Hints of the thin rima inside
rima Hesodius can be seen :
http://www.astrosurf.com/viladrich/astro/moon/closeup/Hesodius_C14-B1920-red-8Aug2015-3h46mnUT-450f.jpg
Clavius crater with low sun elevation :
http://www.astrosurf.com/viladrich/astro/moon/closeup/Clavius_C14-B1920-red-8Aug2015-3h42mnUT-450f.jpg
Best regards
Christian Viladrich Should you wish to unsubscribe from this mailing list, please send an email to C14_EdgeHD-unsubscribe@...
? ? Unsubscribe ? ?
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Re: images of the moon taken on August 8, 2015 with the C14
More stunning images! Thanks for sharing them.
Have you estimated the size of the smallest details you have recorded?
Happy Holidays!
Tim
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George Dunham