Both have same sensor size of 11mmx6mm but different pixel sizes (5.8 vs 2.9 microns) I have a 80mm Doublet Refractor. My budget is limited so won't go for a cooled version at this time. Can you also explain why 5.8 or 2.9 pixel size is better for DSO's like Galaxies, Globular Clusters? Thanks for your help.
