Tag Archive for 'LX90'

Diffraction Pattern of My Cracked LX90

Published on April 17, 2009 in Photo and Telescopes. View Comments Tags: , .


diffraction pattern cracked lx90 300x220 Diffraction Pattern of My Cracked LX90
The diffraction pattern of the 8″ LX90AT with the broken corrector plate

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The image of the Hadar (Beta Centauri) through the broken 8″ LX90AT. Look, the star image is no longer pinpoint.

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Saturn delivered by the 8″ LX90AT with the broken corrector plate. It looks like the Saturn is being engulfed by a black hole.

Now, the main character~
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Cracked Corrector Plate: LX90AT

Published on April 12, 2009 in Telescopes. View Comments Tags: , .

shattered lx90 corrector plate 300x225 Cracked Corrector Plate: LX90AT

Did you ever try to break your scope before? I doubt you dare. I maybe the first LX90AT user with the cracked corrector plate.

Here the story begins.

If anyone remembered my previous post about disassembling the LX90AT, you should know why I removed the corrector plate. Yes, I dropped a toothpick into the OTA from the visual back. All of the nightmare started from here. I bought a Purosol Optical (PO below) and their microfiber cloth as I planned to clean the corrector plate. In the end, I cleaned the primary mirror as well because the PO claimed that the solution was enzyme based and would not hurt the coating. That’s true, just that the microfiber cloth left quite a lot of fiber behind.

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