| M51 with C11 1397mm FL |
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| M51 with FS 152 at F16 2432mm FL |
| M51 with VMC260L 3000mm FL |
| Same Target, Different Scopes Note Focal Length listed below |
| The exposure times, S:N and processing have varied over the years but here are three images of the same target with a 6" refractor, classic SCT and corrected Cassegrain Click on image to see larger versions |