Old data revived 😉 Today, I revisited data from 23 and reprocessed it. It's 9 hours at 900 mm f3.75 with the IMX571C sensor and the Optolong L-Ultimate filter. All this under the beautifully clear sky of Oldenburg city (Bortle 6/7).
#IC443/ Sh2-248
hybrid agate
shell onyx
Looks great!