Comparison
Of
The Canon 20Da
With and Without Autoguiding

Dumbell Nebula Canon 20Da Camera South Riding 9-27-05 (9) 3 min images stacked plus dark subtract	Dumbell Nebula Canon 20Da Camera South Riding 9-11-05 (5) 2 min images stacked plus dark subtract

Ring Nebula Canon 20-Da (5) 2.5 min images plus dark subtract	Ring Nebula Canon 20Da (6) 90 sec image plus dark subtract