Images of Uranus and NeptuneHome

These planets are difficult to image. They are large but a very long way away.

Uranus

Uranus Date and Time: 29th August 2003 23:07 UT
Set-up: ToUcam 740K with X2 lens on the LX200
Capture: K3CCDTools, 321 frames, high gamma, 1/25", 60% gain, meter 213
Processing: Registax, X4, 199 frames stacked
Distance 2,848,000,000 Km (19.0351 AU)
Size 3 arc-sec
Uranus 040806 Date and Time: 6th August 2004 23:11 UT
Set-up: ToUcam 840K with X2 lens on the LX200
Capture: K3CCDTools, 110 frames, high gamma, 2", 41% gain
Processing: Registax, X2, 42 frames stacked, wavelets 1, 2 = 10.
Distance 2,860,000,000 Km (19.1171 AU)
Size 3 arc-sec
Date and Time: 29th August 2006 23:26 UT
Set-up: ToUcam 840K with X2 lens on the LX200
Capture: K3CCDTools, 113 frames, high gamma, 2", 45% gain
Processing: Registax, 71 frames stacked, wavelets 1, 2 = 10, histogram 100-220.
Distance 2,856,000,000 Km (19.093 AU)
Size 3 arc-sec
Date and Time: 24th August 2010 01:15 UT
Set-up: ToUcam 840K with X2 lens on the LX200
Capture: K3CCDTools, 453 frames, low gamma, 1/25", 88% gain
Processing: Registax, 159 frames stacked, wavelets 1, 2 = 10, histogram 0-200.
Distance 2,875,000,000 Km (19.22 AU)
Size 3 arc-sec

Below is a monochrome picture of Uranus with four of its satellites.  Move your mouse over the picture to see which is which; the numbers in brackets are the magnitudes.  Both Uranus itself and the small star on the right are grossly over-exposed and so appear much bigger than they really were.  The bright halo around Uranus is also an artifact of the over-exposure and the processing.  Miranda is also in the picture but it was only 2 arc-seconds away from Ariel and, at magnitude 16.5, I am doubtful if I would have detected it even if it hadn't been so close to the much brighter Ariel.  For comparison, Ariel was 10 arc-seconds from Uranus.

Date and Time: 6th October 2010 22:34 UT
Set-up: DMK 21AF04 with Astronomik CLS filter on the LX200
Capture: ICCapture, 85 frames, 4", gain 877
Processing: Registax, 66 frames stacked, gamma 1.7,
wavelets 1 = 10, 2 = 5, histogram 20-130.
      PhotoImpact, contrast 10, Focus Magic 6,100, contrast 40.
Distance 2,862,000,000 Km (19.13 AU)
Size 3 arc-sec

Neptune

Neptune 040806 Date and Time: 6th August 2004 22:23 UT
Set-up: ToUcam 840K at prime focus of the LX200
Capture: K3CCDTools, 146 frames, high gamma, 2", 41% gain, meter 218
Processing: K3CCDTools, X2, 98 frames stacked, unsharp mask 5,0,100.
Distance 4,355,800,000 Km (29.1166 AU)
Size 2 arc-sec
I think 15 seconds is too long an exposure for my LX200 at this focal length (5,000 mm).
Neptune is not this shape.  Move your mouse over the image to see an attempted to correct
this with a program called Focus Magic which calculates what the original image must have
been given a certain amount of movement.  I don't know how reliable the result might be.
Date and Time: 29th August 2006 22:13 UT
Set-up: ToUcam 840K with X2 lens on the LX200
Capture: K3CCDTools, 47 frames, high gamma, 15", 45% gain
Processing: Registax, 16 frames stacked, wavelets 1 = 10, Histogram 60-225.
Distance 4,361,300,000 Km (29.153 AU)
Size 2 arc-sec

Home