Cyrillus and Theophilus. Theophilus is 100 km in diameter. The central mountains rise to 1400 m above the floor.
Philips ToUcam Pro PCVC740K 10" LX200 at f/50. 510 images, 5 fps, 320 x 240 resolution, stacked in Registax; BMP imported into AA 2.0 and each RGB channel had mild high pass and gauss filters applied. Used a Powermate 5x for first time. Resolution of system
~ .1 arcsec/pixel.