The making of 26 inch Cassegrain -19, Center of Mass

自製天文望遠鏡 牛頓望遠鏡 杜蘇式 卡式 設計和磨鏡方法<br>
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Chanlunlun
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註冊時間: 週四 09 10月, 2003 21:06

The making of 26 inch Cassegrain -19, Center of Mass

文章 Chanlunlun » 週五 20 3月, 2015 16:45

Dear ATMers,

When the OTA has been finished, the center of mass of the OTA must first be found before anything meaningful could be further processed.

To find the center of mass of the telescope OTA is a very big job. We need to assembly the telescope, with EVERYTHING, including the finderscope and eyepiece, fixed onto the body and to carry out a beam-balance action. When the pivot is at a position such that the telescope tube balances itself – the pivot is at the position of center of mass.

We did it. We were exhausted. But now we can proceed to make the rocker box.

Best regards
Chan Yuk Lun
20 March 2015
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53.jpg
Marked !!
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52.jpg
he balancing point is found. The aluminium bar act as a temporary pivot.
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51.jpg
Starting measuring center of mass.
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50.jpg
Assembling the whole telescope- with both the primary and secondary and diagonal mirror in place, together with all accessories, including finderscope and eyepiece..
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Eddy So
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註冊時間: 週四 04 12月, 2008 22:35
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文章 Eddy So » 週五 20 3月, 2015 17:52

[Good Job]

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