kelvincheboy 寫:現時來說這算是口徑最大的內置濾鏡嗎?
用上了內置濾鏡,那內置濾鏡的大小並非關鍵,而是望遠鏡本身口徑,以及整個系統的成像表現及穏定性。
全球最大生產型太陽鏡、Massimo Riccardi 設計,加上兩面討好的0.65A頻寛 (亦我當時那片全球限量生產5片的unobstructed LS75F的頻寛
viewtopic.php?f=10&t=1658 ),這些數字夠吸引了。只是30公斤的重量,測試那天要用到Paramount MX或Skywatcher EQ8才成。
http://luntsolarsystems.com/blog/the-ls ... as-arrived“At 230mm F/7 the Lunt Solar LS230T/PT is by far the world’s largest production Solar telescope. Beating out the previous record holder and now slightly smaller brother by 80mm...
...With an image size of almost 16mm at the eyepiece, the view thru this instrument are truely breathtaking. Clear skies provide the feeling of seeing into every detail of our nearest (and my favorite) Star...
...The LS230T is a limited production dedicated Hydrogen-alpha telescope with a bandpass of less than 0.65 Angstroms. Optical design by the well known Massimo Riccardi provide crisp sharp features, while an unobstructed aperture allow for the highest level of contrast and resolution available in any Solar Telescope..."