Theophillus and Cyrillus

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

	The craters Theophilus and Cyrillus are situated on the western shores of the Mare Nectaris on the eastern 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
	This picture of the same area was taken just over a year later than the one above and at almost exactly the same lunation.  It is slightly smaller scale being at prime focus of my LX200 and in infra-red light.  These differences in capture and more agressive processing accounts, at least to some extent, to the sharper detail.  Seeing can never be discounted. The scale markers are approximately 100 Km north and east. The picture was taken with a ToUcam attached to my LX200 with IR-pass filter on 23rd September 2005, when the Moon was 20.1 days old. Date and Time: 23rd September 2005 02:06 UT Camera: ToUcam 740K Telescope: LX200 with IR-pass filter Capture: K3CCDTools. High gamma, 1/25", 18% gain, 359 frames Processing: Registax. 49 frames stacked. Wavelets 1 = 10, 2 = 5, histogram 30-200, gamma 1.4
	This is the same area but this time imaged when the light was coming from the other direction. The scale markers are approximately 100 Km north and east. The picture was taken with a ToUcam attached to my LX200 with IR-pass filter on 2nd June 2006, when the Moon was 6.4 days old. Date and Time: 2nd June 2006 21:14 UT Camera: ToUcam 740K Telescope: LX200 with IR-pass filter Capture: K3CCDTools. Low gamma, 1/25", 14% gain, 609 frames Processing: Registax. 175 frames stacked. Wavelets 1-2 = 10, gamma 2.3
	A somewhat softer picture taken of the same area on day 19.9. The scale markers are approximately 100 Km north and west. The picture was taken with a ToUcam attached to my LX200 with a skyglow filter on 10th December 2006, when the Moon was 19.9 days old. Date and Time: 10th December 2006 00:58 UT Camera: ToUcam 740K Telescope: LX200 with skyglow filter Capture: K3CCDTools. High gamma, 1/50", 22% gain, 604 frames Processing: Registax. 10 alignment points, 598 frames stacked. Wavelets 1 = 10, 2 = 5, gamma 1.4

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