Sun March 6, 2005 1:06pm HK time Coronado's NearStar 40mm eyepiece with Nikon CoolPix 995 3:2 resolution, Fine quality 1/40s exposure Enhanced with Gimp.

Saturn March 5, 2005 8:30-10:00pm HK time OGS RC16 16" Ritchey-Chretien f/8.4 9mm eyepiece with Nikon CoolPix 995 3:2 resolution, Fine quality A stack of 34 photos, each with 1/2s exposure.

M27 August 2, 2004, 12:51-1:34am HK time OGS RC16 16" Ritchey-Chretien prime focus f/8.4 SBIG ST-8E 1x1 binning 1530x1020 5 minutes with red filter auto-guided exposure 5 minutes with green filter auto-guided exposure 8 minutes with blue filter auto-guided exposure tricolor combined image

M57 August 1, 2004, 00:14-00:21am HK time OGS RC16 16" Ritchey-Chretien prime focus f/8.4 SBIG ST-8E 1x1 binning 1530x1020 1 minute with red filter auto-guided exposure 1 minute with green filter auto-guided exposure 1.5 minutes with blue filter auto-guided exposure tricolor combined image

M27 Dumbbell Nebula Jul 14, 2004, 03:43am HK time OGS RC16 16" Ritchey-Chretien prime focus f/5.7 SBIG ST-8E 1x1 binning 1530x1020 5 minutes auto-guided exposure

NGC7293 Helix Nebula Jul 14, 2004, 02:57am HK time OGS RC16 16" Ritchey-Chretien prime focus f/5.7 SBIG ST-8E 2x2 binning 765x510 10x2 minutes auto-guided exposure

NGC7009 Saturn Nebula Jul 14, 2004, 01:54am HK time OGS RC16 16" Ritchey-Chretien prime focus f/8.4 SBIG ST-8E 1x1 binning 320x197 4 minutes auto-guided exposure

M16 Jul 14, 2004, 00:45am HK time OGS RC16 16" Ritchey-Chretien prime focus f/8.4 SBIG ST-8E 1x1 binning 1530x1020 10x2 minutes auto-guided exposure

M22 June 28, 2004, 0:05am HK time OGS RC16 16" Ritchey-Chretien prime focus f/8.4 SBIG ST-8E 2x2 binning 765x510 1 minutes exposure

M20 June 27, 2004, 23:40pm HK time OGS RC16 16" Ritchey-Chretien prime focus f/8.4 SBIG ST-8E 2x2 binning 765x510 2 minutes exposure

M16 June 27, 2004, 23:10pm HK time OGS RC16 16" Ritchey-Chretien prime focus f/8.4 SBIG ST-8E 2x2 binning 765x510 4 minutes exposure

M57 June 27, 2004, 22:30pm HK time OGS RC16 16" Ritchey-Chretien prime focus f/8.4 SBIG ST-8E 2x2 binning 765x510 3 minutes exposure

Moon May 5, 2004, 1:02am HK time Takahashi FS102 102mm Apo-refractor Meade 40mm eyepiece projection Nikon CoolPix 995 2048x1360, Fine quality 0.004s exposure

M57 (NGC6720) October 4, 1997 9:30pm HK time Celestron C-8 8" at f/10 SBIG ST-8 CCD medium resolution (768x512) mode Track and Accumulate mode 6x10s (total 60s) Grey scale