Equipment:
William Optics Megrez 90, f/6.9 with 4x Powermate (FL 2,484mm approx.)
Losmandy AZ-8 mount
Hutech Modified Canon 40D
1 x 1/100 second exposure (chosen from 80 frames) @ ISO 250
Processed in:
PIPP (Planetary Imaging PreProcessor) for image quality ranking
Registax V6 for wavelet sharpening & Photoshop for further processing

Photoshop's Photomerge operation does a pretty good job of masaicing the top and bottom halves together. Following Mike Salway's approach (see link below), both soft (outer edge) and hard (inner area) wavelet sharpened images were merged together to reduce edge effects.