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What to Expect during the Nov. 13/14, 2012 Eclipse

Presentation Copyright ? 2005-2011 by Bernie Volz, All rights reserved.
Last updated 02/09/2011

Eclipse Predictions by Fred Espenak, NASA's GSFC


Path of Totality for Cairns, Australia area (Google Earth)


Cairns Local Circumstances
16А 55' 20.7" S 145А 46' 51.5" E < --> < --> -16.92242А 145.78096А 2m00.1s (total eclipse) Date: 11/13/2012 UT
Obscuration : 100.00% Moon/Sun size ratio : 1.03712 Alt +01.5 +13.8 +14.0 +14.2 +28.1 Azi 108.6 105.2 105.1 105.1 102.0 P 287 125 018 271 108 V 10.8 04.3 08.0 11.5 05.1 Umbral depth : 70.29% Magnitude at mid eclipse : 1.01305 Even Star Star Mid End End t( to to ecl of of delta f par f tot ipse: total parti

T=68.0s) Time (UT) tial eclipse (C1): 19:44:44.7 al eclipse (C2): 20:38:33.7 20:39:33.6 eclipse (C3): 20:40:33.8 al eclipse (C4): 21:40:20.9

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Local time is UT + 10 hours (C1 = 05:44:44.7, C2 = 06:38:33.7, Mid = 06:39:33.6, C3 = 06:40:33.8, C4 = 07:40:20.9).
Calculated via Xavier M. Jubier's Solar Eclipse Calculator for Google Earth.


Mount Carbine Local Circumstances
16А 31' 41.0" S <--> 145А 07' 58.7" E <--> -16.52805А 145.13296А 2m03.3s (total eclipse) Date: 11/13/2012 UT
Obscuration : 100.00% Moon/Sun size ratio : 1.03687 Alt +00.7 +13.0 +13.2 +13.4 +27.3 Azi 108.8 105.5 105.4 105.3 102.4 P 287 115 018 281 108 V 10.8 04.6 08.0 11.2 05.1 Umbral depth : 87.68% Magnitude at mid eclipse : 1.01616 Even Star Star Mid End End t( to to ecl of of delta f par f tot ipse: total parti

T=68.0s) Time (UT) tial eclipse (C1): 19:44:33.3 al eclipse (C2): 20:38:03.8 20:39:05.3 eclipse (C3): 20:40:07.1 al eclipse (C4): 21:39:30.8

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А А А А А

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Local time is UT + 10 hours (C1 = 05:44:33.3, C2 = 06:38:03.8, Mid = 06:39:05.3, C3 = 06:40:07.1, C4 = 07:39:30.8).
Calculated via Xavier M. Jubier's Solar Eclipse Calculator for Google Earth.


First Contact








Moon begins to move over Sun from West Starts at ~5:44:45 AM (about 10 minutes after sunrise) Must observe sun with filter! Good time to check and adjust mount tracking and alignment Watch for sunspots

6/21/2001 - Zambia (Mario Motta)


First Contact


Crescent images of Sun


Natural pin-holes such as leaves on trees Pin-holes in cardboard
Mario Motta



Watch sky and environment


Gradually darkens Temperature drops
8/11/1999 Hungary (Eric Pauer)


~1 min Before Second Contact


Shadow bands


Are faint ripples of grayish light that wiggle briskly across landscape


Similar to ripples seen at bottom of pools Caused by atmospheric refraction



Occur about a minute before Second Contact Spread white sheet on ground to see Usually not seen unless sky is crystal clear
Photos from http://www.liv.ac.uk/~ggastro/ES.obs.html


~Minute Before Second Contact


6/21/2001 Zambia (Mario Motta)

Onrushing shadow from west


~Minute before Second Contact Watch color and general appearance

6/30/1992 - Uruguay (Bernie Volz)


30 Seconds Before Second Contact



Baily's Beads (~6:38 AM)
Starts about 30 secs before Second Contact Last bit of sunlight shines through the moon's jagged edge





Filters off of cameras and telescopes!

6/21/2001 - Zambia (Mario Motta)


Last Seconds Before Second Contact


Diamond Ring


Last "baily's bead" Lasts only a few seconds before Moon completely covers the Sun

11/3/1994 - Bolivia


Second Contact


Start of TOTALITY! Moon completely covers the Sun FILTERS OFF - Safe to directly view totality At site:


~6:38:34 AM Lasts for 2 minutes Sun/Moon


altitude of ~14А azimuth of ~105А

11/3/1994 - Bolivia (Mario Motta)


Totality


The Corona






What everyone is waiting for! Best viewed with binoculars Look for streamers and how far out they go (Sun/Moon are ~НА) Each eclipse's corona is unique - study this one carefully Look for polar brushes!

11/3/1994 - Bolivia (Mario Motta)


6/21/2001 - Zambia (Mario Motta)


Bernie Volz

Baby Beach, Aruba 2/26/1998


La Paz, Mexico 7/11/1991


Bert Halstead, March 29th, 2006, Egypt, Composite


Totality


Prominences


Red areas near solar (lunar) disk May have none or may have several




Depends on solar activity Likely many as Solar Maximum expected May 2013

08/11/1999 - Hungary


Solar Cycle - Just before Max


Totality


Look around at the twilight sky




Saturn - 17А to upper left of Sun (Alt 28А, Azi 93А) Venus - 31А to upper left of Sun (Alt 40А, Azi 84А) Mercury - 8А to lower left of Sun (Alt 6А, Azi 110А) Jupiter - low in W/NW sky (Alt 6А, Azi 294А) Stars (Sirius, Canopus, Procyon, Caster/Pollux, Betelgeuse, Arcturus, Alpha Centauri, ...) Constellations


Planisphere Projection of Sky during Totality
Using The Sky X To use, hold over your head with directions oriented properly. Note that red bull's eye is the zenith.


Totality


Take in the environment





Darkness of eclipse Animal reactions Temperature drop Wind speed

7/11/1991 Mexico (Mike Terenzoni)

2/26/1998 - Aruba (Peter Bealo)


Totality


Don't forget to take your photographs


Don't need "fast" film - ISO 100 is fine Bracket, Bracket, Bracket! For Mercury - f/8, ISO 100 = ~1/125 For Venus - f/8, ISO 100 = ~1/500



Don't forget to LOOK You only have 2 minutes!


Field of View and Sun's Image Size vs Focal Length (35mm film)

35 mm

100 mm

(Bernie Volz)

270 mm

1000 mm

(Mario Motta)


Field of View and Sun's Image Size vs Focal Length (35mm film)


Solar Eclipse Exposure Guide


Third Contact



Moon no longer completely covers Sun Same transition, but in reverse, as from First to Second Contact





Diamond Ring Baily's Beads FILTERS ON!! Retreating shadow (East) Shadow bands

6/21/2001 - Zambia (Mario Motta)


Fourth Contact


Eclipse Ends (~07:40 AM)


Moon has moved eastward completely off the Sun

2/26/1998 - Aruba (Bernie Volz)

6/21/2001 - Zambia (Bernie Volz)


08/11/1999 10:20 UT

08/11/1999 10:50 UT

08/11/1999 11:20 UT