放下行星月面拍摄不只10年，这次重操故业，影像只属初步出图，后面再优化。回想80年代用5公分折射镜在黄竹坑巴士站街灯下第一次看到土星光环兴奋得可以，后来用7.6公分普通消色差折射镜及自己组装的10公分小牛反配单镜反光机拍土星，只能勉强看到光环也十分满足。17岁那年刚进中文大学，一年级便出任中大天文学会会长，同时重建了新亚书院天文台那1吨重的30公分f/8.5牛反，后来书院把装备转赠给我，主镜现仍存于星河科研社火炭工作室。在大学期间我用那牛反装上Nikon F单反及Kodak TP2415菲林拍的土星，登上了日本Sky Watcher杂誌，收穫一些菲林及现金奬励。十多年前用自己的TMB 203 APO折射及Paramount ME赤道仪以映美精相机也拍过下，超过港币50万元及100公斤的装备，不时开到海边视宁度高的地方流动拍摄，可谓苦不堪言。后来也试过遥控自己西藏天文台的30公分牛反拍摄，但始终那装备不是为行星月面优化，效果有限。也试过用我在云南安装供应给紫金山天文台的ASA 0.8m f/10 RC反射镜 https://astro.hk/events/activities/id/1084 试拍，很有发挥空间，或许稍后洽谈些合作可能性。说到底还是目前手上的装备比较容易发挥，从家开车15分钟便到基地小圆顶，开天窗便可拍摄，不用每次装镜也不用担心光轴。Celestron EdgeHD 14口径不小，四週植被较多所以视宁度也穏定，所以能够轻鬆多拍一些照片，不过以我个性，在天文的兴趣很广泛，目视、摄影、製作器材等都有涉猎，所以不排除这次拍完就算，然后又等10年后... 

Celestron EdgeHD 14"

Sky-Watcher EQ8R Pro Synscan

ZWO ASI678MC & ADC 

PIPP, AutoStakker, Registax, WinJUPOS, Photoshop

2023-10-25 Time 20:49-21:14 

Haven't been doing planetary & lunar imaging for more than 10 years, now I pick up again. This image is only preliminary, and further optimization will be done later. I remember in the 1980s, using a 5 cm refractor, I was thrilled to see the rings of Saturn for the first time under a street lamp at the Wong Chuk Hang bus stop. Later, I used a 7.6cm achromatic refractor and a self-assembled 10cm Newtonian reflector with DSLR to capture Saturn. I could only barely see the rings, but I was still very satisfied. When I was 17 years old, just entering the Chinese University of Hong Kong, I became the president of the CUHK Astronomy Society in my freshman year. At the same time, I rebuilt the New Asia College Observatory with a 30 cm f/8.5 Newtonian reflector weighing 1 ton. Later, the college donated the equipment to me, and the primary mirror is still kept in the Galaxy Scientific Group's studio in Fo Tan. During the university years I used that Newtonian reflector, equipped with a Nikon F SLR camera and Kodak TP2415 film, to photograph Saturn, which was published in the Japanese Sky Watcher magazine and earned me some film and cash rewards. Over ten years ago, I also used my own TMB 203 APO refractor and Paramount ME equatorial mount with an TIS camera to capture it. The equipment cost over HKD 500,000 and weighed 100 kilograms. I often traveled to sea side for better seeing, which was also very physically demanding. I also tried remote-controlled imaging using the 30 cm Newtonian reflector at my own Tibet Observatory, but the equipment was never optimized for planetary lunar imaging, so the results were limited. I also tried using the ASA 0.8m f/10 RC reflector that I installed in Yunnan and supplied to the Purple Mountain Observatory https://astro.hk/events/activities/id/1084 for test shoot, and it showed great potential. Perhaps we can discuss some possibilities for collaboration later. Ultimately, it's still easier to work with the equipment I currently have in hand. It only takes a 15-minute drive from home to the small dome at the base, where I can open the dome shutter and start shooting without the need to install the telescope every time or worry about the optical alignment. The Celestron EdgeHD 14 is reasonably large aperture, and there is more vegetation around, so the seeing is stable, allowing me to easily take more images. However, considering my personality, my interest in astronomy is quite diverse, including visual observations, photography, and telescope making etc. So, I don't rule out the possibility that I might finish this imaging season soon and then wait another 10 years...