Uranus - Oct 2006Same story, different night
Size: 3.6" Location: Aquarius
Date: Oct 7/06
Exp Details: RAW,A0;B51;GN70;GM23;R34B18;T:0.5S
Exposures: 80 of 600
K3 Brightness Level Meter: 130-150.
Filters: Skyglow Filter
Magnification: 5x TeleVue
Notes: Stability was poor, partly due to atmospheric conditions, partly due to the mount's periodic error. This resulted an a large number of throw-away frames. Note that the image still does not appear perfectly round, although I don't know why this is.
Uranus, Sept 17/05
Date: Sept 17/05
Uranus, with 2x BarlowDate: Sept 17/05
Magnitude: 5.7, 100% illuminated
Distance from Earth: 19.2AU (1.786 billion miles)
Exposures: 301 of 1003
Exposure length: 1/25 sec, 10fps, f8.0
Amp on setting: n/a
Gain: 17% - K3CCDtools level indicator: 122
Filters: Baader IR cut filter Sizing: 2x Barlow, lower image resized x2 in K3CCDtools
Approximate magnification: 400x / 800x
Notes: A night of better seeing, yielding a better looking result even though the distance is slightly greater. Still, the planet does not appear to be 100% illuminated - my bet is that I'm due for a collimation overhaul.