標題: M8, M20 and M21 [打印本頁] 作者: passerby-b 時間: 2019-11-5 22:08 標題: M8, M20 and M21
M8, M20 and M21
Technical Data
Sony A6500 Camera with IR Cut Filter removed; Sony 400 F2.8 lens at F2.8; 1 minute exposure per light frame; ISO 1600;
23 light frame, 48 dark field, 48 flat field, 48 dark flat field; stacked by Deep Sky Stacker
Post processed by PS CC, cropped from 6024 x 4024 pixels to 5772 x 3858 pixels and then resize 1500 x 1011 pixels; Curve; Hue and Saturation, Colour Balance and Rotate Anticlockwise 90 degrees
Takahashi EM200 mount, no guiding
at about 1930 hours 22 October 2019 local time
Hang Chun, Taiwan
Special thanks to Mr Louis Wai
圖片附件: M8 3.jpg (2019-11-5 22:08, 379.85 KB) / 下載次數 151