NGC 7009 Saturn Nebula 在大家追彗星的同時試下觀察一下另類星體 Saturn Nebula是一個行星狀星雲 (planetary nebula), 中心是一顆視星等11.5等的白矮星, 因為外型似土星, 所以有土星星雲之稱 Capture details: Date: 20200718 Telescope: Celestron C8-A XLT FocalLength: ~4000mm (2X Powermate) Mount: Rainbowastro RST-135 Camera: QHYCCD QHY290M Exposure: 3sec * 60frames stacked 80% Processed: AS, PS

Mars (火星), the tiny little red dot (south up) Capture details: Date: 20201003 14:03 (UTC) Telescope: Celestron EdgeHD 8" FocalLength: ~4000mm (2X Powermate) Mount: Rainbowastro RST-135 Camera: QHYCCD QHY462C with ADC Processed: AS, RS, WinJUPOS, PS