The double cluster in Perseus. A pair of beautiful open clusters NGC 869 and 884 that are about 7500 light years from us. The blue color of most of the stars indicates they are hot and young. The age of both clusters is estimated at 12.8 million years.
Details
2016-09-21 in backyard, Victoria BC.
stack of three 8 min frames taken with a Canon T3i DSLR and 105 mm refractor operating at f/7 on my Celestron Advanced VX mount. An Orion 50 mm scope and ZWO ASI120S Monochrome camera was used for guiding.