Simcoe Skies Astronomy

Neptune - Planet # 8 of 10

Neptune, unreachable without a modified webcam. Date: Sept 23/05 Magnitude: 7.9, 100% illuminated Diameter: 2.3" Distance from Earth: 29.4AU (2.734 billion miles) Exposures: 40 of 650 Exposure length: 0.5sec, f8.0, 10fps Amp on setting: off Brightness: 100 Gain: 25; K3CCDtools level indicator: 140 Sizing: 2x Barlow, lower image resized x2 in K3CCDtools Approximate magnification: 400x / 800x Notes: First shot at Neptune. Image was slightly overexposed and some chromatic aberration is visible, particularly in the resized version.