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For the term "eclipse".

Great American Solar Eclipse – Totality

Totality Sequence

The eclipse last month as seen from our vantage point in Casper, WY: early, mid and late totality. The moon was moving from the upper right to the lower left in this perspective. You will note the vignette of longer wavelength light along the lower left of the first image and along the upper right of the third image. The mid eclipse image did not have much direct sunlight refracting around the limb of the moon.

When you click on the image to enlarge it, you will need to scroll both horizontally and vertically since I left Damsel’s originals at full resolution, each being a bit over 1300 pixels square. You can view the early, mid and late totality by clicking the three previous links.

The images were taken at approximately 11:54, 11:55 and 11:56 AM, on August 21, 2017, Wyoming time. Totality lasted 2 minutes and 26 seconds from our vantage point in Casper.

The next American total eclipse which will take place on April 08, 2024 will have a totality lasting over four minutes from where we currently are planning to watch near Kerrville, Texas. The duration is longer, I guess, because the Earth will be closer to aphelion and the Moon will be closer to perigee than was the case two weeks ago.

Eclipse Animation

This nice animation of the August 21st Eclipse across America showed up on Astronomy Picture of the Day today. It is less than a minute in length and is a good graphic illustration of the path of totality.

The embedded video can be set to full screen for enlargement.

After the video finishes, there is another interesting video follow-up that animates the shadow of the moon as it crosses the country. You can see in detail where totality occurs with the shadow video.

Countdown to the Great American Solar Eclipse

The countdown has been underway here for almost five years since we first made our reservations at the RV campground near the centerline of the eclipse in Wyoming. Now, however, we’re down to the last few weeks before the big event. The Javascript countdown timer above shows the remaining time to the start of the eclipse (first lunar encroachment) in Arizona Time.

The date of the eclipse is August 21, 2017. The beginning of the eclipse is dependent on the location of the observer, but in our case is 16:22:20 UTC, The seven hour difference has been adjusted in the timer. Totality follows a bit over an hour later. The interactive eclipse map has moved to the NASA Eclipse pages:

https://eclipse2017.nasa.gov/sites/default/files/interactive_map/index.html

The All American Eclipse is One Year from Today!

Commemorative Eclipse ShadesOne year from today, we plan to be in Casper Wyoming to observe the August 21, 2017 total eclipse of the sun. We have been getting ready for the event for over four years.

“Ready” includes making reservations at a campground near the centerline of totality, planning the trip to include some optional, scenic side excursions and purchase of a couple dozen commemorative eclipse shades from Rainbow Symphony. We are also preparing to use the camera and telescope to record this spectacular event.

Image: August 21, 2017 Total Solar Eclipse Commemorative Shades. Click to enlarge.

This post from May of 2012 has a map of the path of totality and some details about the eclipse. I also did some on-line research and found Eclipsophile.com/Wyoming which forecast a 75% chance for clear skies in August. We’re hoping that it will be so.

The All American Eclipse

The Great American EclipseAlthough the event is over fifteen months in the future, we ordered our special eclipse shades from Rainbow Symphony last week. This week, they showed up with the poster depicted at the right as a bonus. We ordered twenty-five pair of shades and plan on handing them out to family and friends as the event approaches.

Earlier, we made our reservations for an RV park near the centerline of the path of totality in Casper, WY. I’m sure the campgrounds are going to fill up very quickly as this is certain to be the most important and popular celestial event in our lifetimes. As spectacular as the Annular Eclipse was that we witnessed four years ago in Page, AZ, this one is certain to be more impressive, weather permitting.

The good thing about this eclipse is that nobody in the entire lower forty-eight has to travel more than a few to several hundred miles to get to the band of totality. Our trip, as currently planned, takes us over a 1,035 mile route with some extra miles due to sight seeing side trips along the scenic route through Arizona, Colorado, New Mexico, Utah and Wyoming.

Image: All American Eclipse Poster; click to enlarge.

Partial Solar Eclipse

Partial Eclipse Panel

Damsel and I watched periodically as the new moon partially obscured the sun today. The eclipse stats for Phoenix (according to NASA) are as follows (Times MST):

  • Eclipse begins: 14:21
  • Maximum eclipse: 15:38
  • Eclipse ends: 16:45
  • Sun altitude: 24°
  • Sun azimuth: 236°
  • Magnitude: 0.449
  • Obscuration: 0.331

The three-image panel above shows the lunar disc (left to right) just appearing, near maximum obscuration and just disappearing. I used the same setup today as I did for the 2012 annular eclipse and transit of Venus. Click on the image to enlarge.

The terms “magnitude” and “obscuration” above (I infer) refer to the percentage of penetration of the lunar shadow across the solar disc and the percentage of of the total solar area blocked by the moon. Those numbers (more or less) can be seen in the middle image above near max eclipse. I assume that the azimuth and altitude (elevation above horizon) are for maximum eclipse time.

We were blessed with beautiful, clear skies during the event and enjoyed yet another one of God’s wonders from our desert home. We’re still planning to be in a position to see the August, 2017 total solar eclipse event.

Total Solar Eclipse of August 21, 2017

eclipse-2017.jpgWe started planning on viewing the total eclipse even before experiencing the annular eclipse last week. We think that we will observe the total eclipse from Casper, WY, although that could change.

The eclipse is still more than five years in the future and since it will occur on a coast to coast path across the United States, there are a lot of places to view the phenomenon. The greatest eclipse will occur in Western Kentucky – that is when the duration of totality is the longest – two minutes and 40 seconds of totality in this case.

Image: Path of totality across the states. Click to go to the official NASA eclipse site.

Wherever we decide to view the eclipse, I’m sure it will be spectacular. In Wyoming, totality will last about 2 minutes and 24 seconds. That’s plenty of time to see the stars and planets come out and for the surface temperature to drop noticeably.

This is a long time away, but we wanted to make this note about it on the blog. Maybe over the next five years we can organize an expedition of family and friends to enjoy the event. We’ll see . . .