South Riding, VA. (01-25-08)
Canon 200mm f2.8L; f5.6;
3 min frames; 12 image Stacked
ISO 800; (dark subtract) no autoguiding
South Riding, VA. (12-06-07)
Canon 200mm f2.8L; f3.2;
2 min frames; 10 image Stack
ISO 800; (dark subtract); no autoguiding
Comparison
Of Light Pollution Effect on
Canon 20Da vice the Canon 40DH
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| Canon 20Da;
M31; South Riding, VA. (01-25-08) Canon 200mm f2.8L; f5.6; 3 min frames; 12 image Stacked ISO 800; (dark subtract) no autoguiding |
Canon 40DH;
M31; South Riding, VA. (12-06-07) Canon 200mm f2.8L; f3.2; 2 min frames; 10 image Stack ISO 800; (dark subtract); no autoguiding |