November 11th Mercury Transit Countdown!

From Tele Vue’s patio, the Mercury Transit of May 9, 2016 was imaged in white light with our FoneMate™ adapter using a Samsung Galaxy Note 4 attached to an 18.2mm DeLite eyepiece and Tele Vue-76 scope. Mercury is in the lower-right quadrant and forms a diagonal line with sunspot regions 2542 and 2543 as it passed nearest to the center of the solar disk. Mercury was 12-arcseconds in diameter then and will be just 10-arcseconds for the November 2019 transit. Photo by Jon Betancourt.
It was Johannes Kepler (of “Kepler’s Laws of Planetary Motion” fame) that first predicted transits of Mercury over the face of the Sun. He predicted the May 1607 event and November 1631 event. However, nobody knew how big (or small) Mercury would appear against the Sun, leading Kepler to misidentify a sunspot as the planet when he observed the the first prediction. Kepler was deceased by the time of the second event, but a French astronomer confirmed the transit took place.
 
The next Mercury Transit is set for 4-days from now: November 11, 2019. This blog will tell you all you need to know to view and image this rare sight!
 

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Get Ready NOW for November’s Mercury Transit!

Now is the time to prepare for the premier astronomical event of 2019!

From Tele Vue’s patio, Jon Betancourt and David Nagler view the May 2016 Mercury Transit in Hydrogen Alpha light. They’re using a big-screen Samsung Galaxy Note 4 supported by a FoneMate™ smartphone adapter attached to our 18.2mm DeLite eyepiece and Tele Vue-76 APO scope. Staff photo.

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 Transit of Mercury in May 2016: the planet here is 12-arcseconds across — while 20% larger than the upcoming November 2019 event — it was still a very small target. Note the size of the planet versus the sunspots in the Active Regions. White light filter on Tele Vue-76 APO scope with 18.2 DeLite eyepiece (26.4x) connected to FoneMate™ smartphone adapter holding Samsung Galaxy Note 4. Image by Jon Betancourt.

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2019: Solar and Lunar Phenomena Overview

From Tele Vue’s patio, the Mercury Transit of May 9, 2016 was imaged in white light with our FoneMate™ adapter using a Samsung Galaxy Note 4 attached to an 18.2mm DeLite eyepiece and Tele Vue-76 scope. Mercury is in the lower-right quadrant and forms a diagonal line with sunspot regions 2542 and 2543 as it passed nearest to the center of the solar disk. Mercury was 12-arcseconds in diameter then and will be just 10-arcseconds for the November 2019 transit. Photo by Jon Betancourt.
Mercury Transit
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 11th from 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.

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