| Description | C5 is a spiral galaxy that appears near the Milky Way’s equator, obscuring what would otherwise be a bright target with thick cosmic gas, dark dust, and glowing stars: hence its nickname, "Hidden Galaxy". British amateur astronomer William Frederick Denning is credited in the IC Catalog with the discovery from 1892, though Edward Barnard, an American astronomer, observed it in 1890 but failed to publish. This observations is a revisit to this target which I'd previously imaged several tunes with an OSC. Recognizing that mono cameras are a minimum of 3x more sensitive than OSCs, even so, the mono camera got much deeper than I expected in this relatively quick integration, no doubt because IC 342 emits a significant amount of near-infrared light. This is normally blocked using a UV/IR cut fllter with the color camera, but is useful light in mono imaging. |
