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