Now is the time to prepare for the premier astronomical event of 2019!
While there are at least 20 solar eclipses in a decade, there will be only 13 transits of Mercury each century! The next one, on November 11th is less than 8 weeks away. You should be checking your gear and doing dry runs on the Sun now (hopefully with sunspots) to prepare for this rare event: the one after this will be a long way off in the year 2032.
The premier event of 2019 awaits the end of the year when Mercury appears to pass over the face of the sun (as seen from Earth) on November 11thfrom 12:35 to 18:04 UT. Due to its diminutive size — only 10-arc-seconds in diameter — eclipse glasses over your eyes will not do: you’ll need a properly solar filtered telescope, binocular, or telephoto lens to view it (see Viewing/Imaging Resources at bottom). Don’t miss it as the next transit of Mercury won’t be until 2032.