Comments on: Remove The Corrector Plate Of LX90 http://www.astronomynotes.net/2007/01/08/remove-the-corrector-plate-of-lx90/ Shares and cherishes the gorgeous night sky, the everyone's property. Fri, 05 Dec 2008 06:26:15 +0000 http://wordpress.org/?v=2.6.5 By: Kim Miau Lee http://www.astronomynotes.net/2007/01/08/remove-the-corrector-plate-of-lx90/#comment-944 Kim Miau Lee Sun, 30 Nov 2008 00:00:00 +0000 http://www.astronomynotes.net/?p=188#comment-944 [quote comment=""]I am now having difficulty collimating the scope. Have I gone beyond the point of no return? Do you think I can resolve culmination or do I need to send the corrector plate with the secondary mirror to Mead? Thank You for you input. Leo Gruenke P.S. This all happened before I read you article[/quote] I believe that you're still able to get the secondary mirror back near to the original position. This job will be time consuming though. I assume that yours is the same with mine (old secondary design (3 screws)). 1. Unscrew secondary mirror from the holder. 2. Revolve the secondary mirror by a few steps. 3. Screw it back and do the collimation. See whether you can bring it back. 4. Repeat steps 1 to 3 until you get a perfect collimation. P/S: Try to screw each screw equally when doing the collimation as it is supposed like this. Don't overscrew again. :D

I am now having difficulty collimating the scope. Have I gone beyond the point of no return? Do you think I can resolve culmination or do I need to send the corrector plate with the secondary mirror to Mead?

Thank You for you input.

Leo Gruenke

P.S. This all happened before I read you article

I believe that you’re still able to get the secondary mirror back near to the original position. This job will be time consuming though.

I assume that yours is the same with mine (old secondary design (3 screws)).

1. Unscrew secondary mirror from the holder.
2. Revolve the secondary mirror by a few steps.
3. Screw it back and do the collimation. See whether you can bring it back.
4. Repeat steps 1 to 3 until you get a perfect collimation.

P/S: Try to screw each screw equally when doing the collimation as it is supposed like this. Don’t overscrew again. :D

]]> By: Leo Gruenke http://www.astronomynotes.net/2007/01/08/remove-the-corrector-plate-of-lx90/#comment-943 Leo Gruenke Tue, 30 Nov 2004 00:00:00 +0000 http://www.astronomynotes.net/?p=188#comment-943 While trying to culminate my 8” LX90 one of the screws became unscrewed from the secondary mirror. I was unable to start the screw and tried to loosen the other two screws. Long story short all three screws became unscrewed and the secondary mirror fell off. I have remove the ring and corrector plate replaced the three washers over the center pin and replaced the three screws and reattached the secondary to the corrector plate. I am now having difficulty collimating the scope. Have I gone beyond the point of no return? Do you think I can resolve culmination or do I need to send the corrector plate with the secondary mirror to Mead? Thank You for you input. Leo Gruenke P.S. This all happened before I read you article While trying to culminate my 8” LX90 one of the screws became unscrewed from the secondary mirror. I was unable to start the screw and tried to loosen the other two screws.
Long story short all three screws became unscrewed and the secondary mirror fell off.
I have remove the ring and corrector plate replaced the three washers over the center pin and replaced the three screws and reattached the secondary to the corrector plate.

I am now having difficulty collimating the scope. Have I gone beyond the point of no return? Do you think I can resolve culmination or do I need to send the corrector plate with the secondary mirror to Mead?

Thank You for you input.

Leo Gruenke

P.S. This all happened before I read you article

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