AirborneEclipseChasing
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1 AirborneEclipseChasing By Stephan Heinsius Genk, 03. August 2018
2 Why airborne? Longer Totality Clear Air Reach all Eclipse Regions Fast and Convenient Moving Umbra Above Clouds
3 Solar Eclipse is, when Sun Moon the shadow of the Moon falls on Earth and blocks the view to the Sun there
4 Partial, annular, total, or Sun Moon Umbra Total Solar Eclipse Penumbra Partial Solar Eclipse Antumbra Annular Solar Eclipse
5 in the Area of Transition Sun Moon At the peak of the Umbra Sun and Moon have exactly the same angular size Area of Transition Transitional Solar Eclipse The topography of the Moon determines the Solar eclipse The area where this eclipse can be observed is small
6 Only in the Area of Transition there are these exceptional phenomena Multiple diamond ring (120+ Baily s beads) 360 ring of chromosphere Umbra inside sunlight glare Umbral edge phenomena caused by the lunar limb Presumably these were not* seen nor photographed before *as per mid of
7 Areas oftransition The black suns denote regions of maximal totality durations of 5 seconds Data and map collected from:
8 Bermuda The Area of Transition is located about 1000 kilometers southeast of Bermuda The umbra is just some hundred meters up to a few kilometers wide and moves from west to east with about km/h To enable eclipse observations not only from the cockpit the umbra has to be approached rectangularly Crossing this small fast moving umbra requires a precise timing, that exceeds the usual capabilities of navigation systems (FMS) on board
9 Eye toeye withtheeclipse Airplane as Observation Site Altitude of the Sun Grafic created with Stellarium,
10 Challenging Astrometry The astrometry on required a rectangular flight route into the umbra difficult but doable umbral trace azimuthofthesun flight heading Graphic created by Dirk Ewers with Google Earth A navigational software* for solar eclipses supplements the FMS *Xavier Jubier s Solar Eclipse Maestro
11 Solar EclipseFlight Procedure 1 Check Feasibility Based on a rough concept of the flight intention it becomes clear if the objective is feasible organizationally, logistically and financially
12 Solar EclipseFlight Procedure 1 2 Plan the project What has to be done until when, to enable the plane to take off in time
13 Solar EclipseFlight Procedure Find Passangers To finance the project other passengers have to be found and tickets to be sold The seats are offered depending on windows geometry and visibility of the sun Observational and seat related wishes are being discussed with the interested persons Seats are being assigned, payments and formalities being processed
14 Solar EclipseFlight Procedure Charter the plane On the island of Bermuda a plane is being found that is well suitable for the observation, and that is still available on eclipse day, including the crew, and that is positioned near to the eclipse area The plane is being chartered Further steps are taken together with the pilot, the aviation company and navigation experts
15 Solar EclipseFlight Procedure Elaborate flight routes Three alternative flight routes are being elaborated in detail
16 Solar Eclipse Flight Procedure Fixing the flight plan On the evening before departure the final flight route and procedure for eclipse day is being defined
17 Solar Eclipse Flight Procedure Conduct Briefing In a briefing all passengers get explained the procedure and features of the flight
18 Solar EclipseFlight Procedure Fly intotheumbra Coming from Bermuda firstly a defined point near the eclipse zone is headed for, to then depart from there at the right time to cross the umbral path HSE_2013_EFlight_Bermuda_XMJubier.mp4 After flying a waiting loop and two curves to get rid of spare time the final course is rectangular to the umbral path. Then we re crossing the umbra (just a few kilometers small) at the required seconds ( totality run )
19 Solar Eclipse Flight Procedure Objective achieved! For a few seconds sunlight at the lunar edge shines through some moon valleys successively (multiple diamond ring), for others simultaneously (Baily s beads effect) to then merge together to one single point of light left in a deep lunar valley. All around the moon a red ring of solar chromosphere is visible to then vanish in the shine of a second multiple diamond ring
20 Solar EclipseFlight Procedure Landed safely After a few minutes the course is set to head back to Bermuda On board we have time to exchange experiences and images just taken After the landing a happy group of successful eclipse chasers come together for a group photo in front of the plane and finally a joint lunch in a nearby restaurant Foto: Ben Cooper
21 Whatkindofeclipsedidwe actuallyhave? In theareaoftransition: 99.9x% partial vs. Total withtotalityof-1 sec (total basedon lunar radius, partial due tolunar limb)? Annular? (no, toofaraway from antumbra) Source: John Irwin
22 And this was the weather Sources: NASA, Xavier Jubier
23 Experience Solar EclipseFlight Looking on video images the dynamics of the event and the sprit on board can be experienced B014 TSE2013 HD.mp4 GP TSE2013 Incoming Umbra HD.mp4 DVK70 TSE Meeting the Peak of the Umbra HD.mp
24 and when the umbra is long Especially near the polar regions the lunar shadow can become very long. Also there can be flown in the direction of the umbral track On 20. March 2015 a Total Solar Eclipse appeared over the sea between Scotland, Iceland and the Faröer islands. The umbra extended over approx. 150 x 460 km and due to its size it generated an impressive darkening of the clouds about 10km below flight altitude At this solar eclipse we flew the same course the umbra was heading, so the duration of totality was extended by about one minute compared to a stationary observation on the ground B021 Flying through the Umbra x.mp
25 When is the next one? The next total solar eclipse takes place over the Pacific Ocean and South America on 2nd July 2019 The next transitional solar eclipse is on 20th April 2023 over the southern Indian Ocean, Australia and the Pacific The next total solar eclipse over a polar area takes place on 04th December 2021 over Antarctica
26 Questions????????
27 Infos Images and Experience Reports
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