萬能膠都應該好實,至少好過雙面膠紙,因為佢唔怕水! Wah, If 萬能膠 means 'Pentax' glue as the one we used in the telescope making class, the glue is not waterproof--- 佢怕水 . . "AA" and "AB mix" glue are definetely not suitabe for they hold the mirror too tight, and allow no space for thermal expansion. As Choi Sir said Silicone...
I found some old paintings drawn years ago when clearing some trash in Cheung Sha's hut,some are star gazing related-more or less,here's No.1: http://www.hkastroforum.net/bbs/album_pic.php?pic_id=1784 It sure reminds me something long forgotten. Wonderful. :shock: :shock: I came across your drawing...
Dear WongSir, If weather permits, 24 inch scope will arrive Water Mouth tonight. Best regards Chan Yuk Lun Sorry, Mirror God. I just come home from the temple for I have a special function with my brothers and sisters today. I think I have to join you next time. Thanks for your kind invitation. Won...