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Old 02-01-2022, 12:59 PM
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AG Hybrid (Adrian)
A Friendly Nyctophiliac

AG Hybrid is offline
 
Join Date: Nov 2009
Location: Toongabbie, NSW
Posts: 1,600
Quote:
Originally Posted by astronut View Post
Hi Adrian, I just moved my 12" Lightbridge optics over to the Geoptik.

I changed out the primary knobs to something smoother, also the washers are now Teflon. Painted the mirror tub matte black. And moved over all the accessories from the LB. Filter slide, sec dew heater, focuser,finder. I'm using the Geo spider, but with my LB sec holder & mirror.

Moved the handle over for left side viewing. Did you purchase the balance weight as an extra? I'll put up pictures, soon. I would love to see what other changes you make.
In my case I'm left eye dominant so switching sides was a welcome change for me. I hadn't considered just demounting the old secondary holder and reusing it. I couldn't use my dew heater with the new holder. But, I like the new secondary spider and collimation knobs. Maybe I can change that, add my old secondary holder and dew heater. That being said I do have a 12v hair dryer to use instead.

In the case of the balance weight. I wasn't willing to spend money on that. A strip of velcro on the mirror box. 2 x 0.5kg weights duck taped up with some velcro more then does the job. Although I'm not sure if 1kg is enough anymore.


It must have been nice just to drop those LB optics in. They are GSO which are 300mm mirrors. Skywatcher mirrors are actually 305mm. Doesn't sound like much, but I had to use a table wheel grinder on the primary mirror holders to make it fit. Lucky they are just hard plastic.
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Last edited by AG Hybrid; 02-01-2022 at 01:14 PM.
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