Theophillus and Cyrillus Home

Move your mouse over the picture to see the names of the various features.

The craters Theophilus and Cyrillus are situated on the eastern shores of the Mare Nectaris on the western side of the Moon.  Cyrillus is the older of the two at around 3,900 million years. It is 100 Km in diameter with steep slopes and three central mountains.  Theophillus is half that age and slightly larger at 104 Km.  The central mountain is 400 metres high and has four peaks.
The picture was taken with a ToUcam attached to my ETX125 with a X2 lens attached on 4th September 2004, when the Moon was 19.9 days old.
Date and Time 4th September 2004 04:29 UT
Camera ToUcam 740K
Telescope ETX125 with X2 lens
Capture K3CCDTools. High gamma, 1/50", 20% gain, 416 frames
Processing Registax. 246 frames stacked. Wavelet 1,2 = 10 
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