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PostPosted: Thu May 20, 2010 8:50 am 
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Joined: Sat Jul 24, 2004 12:12 pm
Posts: 1030
Location: Flackwell Heath, Bucks, UK
SPA member Martin Lewis has produced this superb map of Mars based on his images made over the three months when the planet was closest during early 2010. The instrument he used was his home-built 222 mm Dobsonian telescope with a DMK monochrome camera, through which he takes images in three colours and subsequently combines them. In order to track the planets during photography he has made a Poncet-type motorised tracking platform.

To create the map from his individual images, Martin used the Winjupos software'sMap Computation option.

This is described as an albedo map because it represents the albedo features (light and dark) on Mars, rather than the physical features such as the craters and canyons that only show up under oblique illumination.

Robin

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PostPosted: Thu May 20, 2010 9:39 am 
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Joined: Fri Dec 03, 2004 2:41 pm
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Location: 55° 57'N: 03° 08'W
A superb result by Martin.

'latitudes' should surely read 'longitudes'.


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PostPosted: Thu May 20, 2010 11:09 am 
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Joined: Mon Jun 25, 2007 2:37 pm
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Location: North Hertfordshire
Martin this is a fantastic piece of work :shock: and the perfect way to summarise all the effort involved in observing the mysterious red planet through an opposition.
It would make a great PA feature to see just how you constructed this map.

Excellent work, Dale


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PostPosted: Thu May 20, 2010 1:05 pm 
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Joined: Sat Jul 24, 2004 12:12 pm
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Location: Flackwell Heath, Bucks, UK
Quote:
'latitudes' should surely read 'longitudes'.

That's meant to refer to the map as a whole rather than the x-axis, which is indeed longitude. Of course both axes are planeticentric anyway.

Robin


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PostPosted: Thu May 20, 2010 4:10 pm 
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Joined: Tue Jun 12, 2007 1:13 pm
Posts: 795
Location: Dudley
Fantastic work - so much detail.
Well done.

All the best
Jack.

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250px dob
200p
10x50 Helios
15x70 Celestron


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