Saturday, 3 December 2016

AAS 2017 Eclipse Web site

The American Astronomical Society (AAS) has put together a website related to the total solar eclipse in August 2017. A very well structured site for those looking to learn the basics and get good information going forward. It contains maps and articles from other websites with links for those wanting to know more. And you might even be able to apply for a small grant to help fund your solar eclipse chasing, that is if you have something science related to add. They won't pay you just to see it!

 eclipse.aas.org is Highly recommended!

Here is an announcement from Dr Richard Fienberg, press officer of the AAS. Just part of the press release. A link is provided for those wanting to know more.

The American Astronomical Society (AAS) has launched a new website, eclipse.aas.org, to help prepare the country for next year’s most anticipated celestial spectacle: the first total eclipse of the Sun to touch the US mainland since 1979 and the first to span the continent since 1918. With support from the National Science Foundation (NSF), the AAS has also unveiled a program of small grants to fund educational activities aimed at engaging the public with the eclipse.
Several excellent solar-eclipse websites already exist thanks to the efforts of a handful of individual amateur and professional astronomers as well as NASA. “Rather than ‘reinvent the wheel,’” says Shadia Habbal, co-chair of the AAS Solar Eclipse Task Force, “eclipse.aas.org offers a modest amount of high-level information to get people started and then provides links to more detailed information on other sites. It’s a curated guide to the best and most reliable resources on solar eclipses in all media.”

The AAS has been hosting a set of conferences preparing for the eclipse. Local governments, police, community leaders, and others have been invited to the conferences to get information to help them prepare for the upcoming eclipse. These conferences have been highly successful in getting the word out in a correct way. One of the common requests at the conferences was to have a comprehensive web site and they have delivered. Great job folks!

Friday, 11 November 2016

The Eclipse in the USA,, safe?

Is it safe to go to the USA for the total solar eclipse next summer?

I am not sure how to respond to this question. It has come in from eclipse chasers located outside the USA and takes on several forms. The recent election, international news about riots, stories about crazy xenophobic harassments, and so on can be found on social media as well as the TV. For those outside the USA it all looks kind of scary.

In my own opinion I don't think anything has really changed. The news and social media has gotten stirred up because of the election (they make a lot of money when an election is going on and love to have you tuned in). Now that the excitement is over and there is an answer to who won, they should return to the normal dribble soon.

That means by August, everything should be back to the normal hustle and bustle that defines life in America. And weather permitting, it won't matter what your politics or religion, the eclipse will be amazing.


A Few Notes of Caution

Okay, so things will be fine. Things will be normal. Which means one should not be stupid in the wrong place. Being stupid in the wrong place will result in trouble, that is normal. The normal travel advisories for visitors should be heeded. Do not leave valuables unattended, be aware of your surroundings, do not violate local laws, avoid political assemblies, - in other words, show some common sense and find a place you can enjoy the eclipse.



Wednesday, 26 October 2016

Drones and Total Solar Eclipses

In the past few years there has been a minor revolution in digital photography platforms. Drones can hover and fly over the tops of trees with small cameras attached. The result is often a very interesting perspective of a landscape or group of people.



The thing with using a drone is that you need to be considerate of others. Some will welcome a video of themselves at the eclipse while others will say it is distracting and may even ask that you not fly it near them. Total Solar Eclipses are a great group gathering. Getting video before the eclipse will be good. The video after totality will be better!

Drone use at Past Eclipses

The 2016 Total Solar Eclipse did not cover a lot of land areas. The land covered was mostly Indonesia in areas where you could easily loose your drone. Some ideas were tossed about for drone photography from sea only to be discarded due to complexities of take of and recovery from a moving ship. In 2015 a Total Solar Eclipse went over cold arctic regions and drones were just not practical.


For 2017, the situation is quite different. The eclipse path covers many areas where drones can be flown and people who will fly them. As a result you can expect to see several drone videos of groups watching the eclipse posted to social media after the fact.


Above the Clouds

Except for very powerful drones only a light camera can be carried. And getting above clouds might present a real challenge (both in terms of altitude and legalities). The light cameras are almost always wide field showing a curved view at the edges. Dramatic landscape images can be made with these cameras. But it must be stated that they really are not suitable for imaging the eclipse itself.


Chase the Shadow

What drones are quite suitable for is imaging the approaching and retreating shadow of the Moon as it crosses the landscape. A fast exposure will be needed as the shadow will be moving very fast. And I do mean fast. It will be moving at a supersonic speed.

It would be of great interest to those of us involved in eclipse predictions and calculations to have those videos along very accurate position and timing details. While we can predict eclipse circumstances with a high degree of accuracy we continue to invent new improvements. Wide angle video showing the shadow movement and shape is desired.


Be Polite!

I cannot condone the use of a drone over a populace during totality. There is a very good chance the operator will be distracted by the eclipse itself. Many other observers will find the drone in bad taste during totality. They came to see the eclipse of the Sun by the Moon, not a drone! So avoid crowd images except from the rear.  Flying between the crowd and eclipse is bad.




Sunday, 16 October 2016

Are you going to the 2017 Total Solar Eclipse too?

There has been a lot of talk amongst solar eclipse experts as to how many people might try to see the total solar eclipse in August 2017. Some of this concern has spilled over to civil groups such as local and state police, commerce, hoteliers, and even mass media is getting in on the story although at the time of this writing most USA media are greatly distracted with the election of a US president. FaceBook and other social media sites are saturating with eclipse related maps and information. As a result, the question is just how many people might try to see the event? It really is worth seeing but do note the popularity does cause some issues.

The Best Place?

Really, anyplace you can see the total solar eclipse is the best place. All along the central path of totality, if the Sun is clearly visible you are in for a treat. That said, a lot of places want you to think they are the "best place". So don't be fooled into thinking you need to be at some specific location otherwise you miss the best view and so on.

Contrary to that thinking is that the best place selection in advance is a good idea. Are you going for the best climate conditions (indicates possible weather success) or the longest duration of totality? Are you going for ease of access, a crazy party, circus show, or some other criteria. Advanced planning is good, but don't get obsessed with any given location is the venue is sold out or difficult to reach.

Any place you can see totality is the best place.

Central most line or near the edge?

The selection of near the central most part of the path (longest duration of totality) or near the edge is a personal taste matter although some use it as a way to double check lunar topology along the rim and validate other computations. If you study the maps at GreatAmericanEclipse you will see that maximum totality duration spreads out for a large area centered in Kentucky.

What is interesting to note is that one experiences more interesting diamond rings near the edges (or about 1/3rd of the way from the edge to the central most part of the path). By more interesting I mean that there may be longer beads/rings as the solar disk skirts the lunar rim. For an idea of what I am speaking about please visit the following web page by solar eclipse Xavier Jubier.

Planning the day

Because of the numbers expected, it is a good idea to plan your eclipse day accordingly. For example if you are staying at a location outside the path of totality the night before you will want to consider departure time, food options, destination and expected timing to arrive. Be flexible of course, the weather could be your enemy.

Are you bringing a large amount of camera equipment or people with you? If so, the planning is even more important. My favorite method is to simply set up in the parking lot or outdoor common area of the hotel or resort where we are staying. That way I can be up for sunrise to see the weather conditions and fret along with all the other chasers until totality finally reaches our location. I guess that is why the term chasers always seemed odd to me. We don't really chase as much as we wait. We might sometimes "chase" (dash seems better) to get to clear sky and again, wait.

So here is a basic list of things to consider.

  • Comfort facilities.
  • Comfort items (umbrella, food/snacks, beverages, ...)
  • Shaded area.
  • Chairs/benches/tables.
  • Optics (Binoculars, Camera, Tripod, Zoom lens, Telescope) - optional.
  • Vehicular access and parking.
  • Crowds, wildlife (human and otherwise), safety, entertainment.


There are others issues to consider, but these are the primary to get your started.

How many will be there?

Who can really predict at this time other than hotels. In some places hotels near the central most part of the eclipse path are sold out. That condition is spreading outward however it is important to note that these regions are not highly populated thus having limited hotel space availabilities.  There are still plenty of hotel rooms available in highly populated areas that fall under the path.

I know of several parties and gatherings where thousands are expected to show up, including a sports stadium. Will that be a great place to see an eclipse for you? With tens of thousands of seats, don't plan on any form of telescopes or optics. That said, you can get amazing images with camera-phones and small zoom cameras. The technology is absolutely incredible.

Or would you prefer a private location, camping under the stars cowboy style? Unless you have made some arrangements already or know someone, you might find that difficult to arrange.

If history is any guide the 2009 Total Solar Eclipse in China was well known in advance and passed over several populated areas. Throngs went to different viewing venues. The weather was not at all cooperative across large areas of the path, however it is estimated hundreds of thousands were able to see something.

Don't miss it! Plan now if you have not already!



Friday, 14 October 2016

What should you bring to a total solar eclipse?

I get asked this question frequently. What should one bring to a total solar eclipse? The answer is simple. If this is your first total solar eclipse, bring yourself and if you know how to use them, binoculars.
Choosing what to bring
And seriously, I do mean to only bring binoculars if you know how to use them. If you are a novice to such optics, don't bring anything but yourself (and vision correction glasses or contacts). You will be looking at something that is about twice or three times the size of the Full Moon. The actual object of interest, the solar corona, extends several times further but requires that you either use binoculars or have dark adapted your eyes.

Binoculars
If you own a pair of binoculars, try looking at the Moon when it is visible. Holding binoculars gets easier with practice so do not be discouraged if the first efforts are difficult. I have used small binoculars as well as big ones and found the view good with all. Currently I use 15x70 binoculars which are rather awkward and heavy (15 means 15x magnification and 70 denotes the size of the aperture). While better suited for a use on a tripod the view is fantastic and for a few minutes it is easy to hold them steady enough to enjoy the view. Of course, as an eclipse veteran, my hands do not shake as they once did due to the excitement of the moment. To get past that issue, consider image stabilized binoculars - they work great!

Dark Adapting
Dark adaptation before the total part of the eclipse is not easy. The Sun is out. Kind of hard to dark-adapt your eyes unless you use an eyepatch or red filtered goggles (after dark adapting in doors). While an eye patch may sound enticing, you might want to try it out for a bit before the eclipse is coming. I found them uncomfortable and not fully functional. Had I spent time before the eclipse day testing them out I would have had more success, but hey, who wants to walk around with an eye patch? I am clumsy enough.



Photographer?
For photography fans taking pictures of an eclipse is not difficult. See my web pages about eclipse photography. In those pages you will find some recommendations about equipment and styles. Of course this information is constantly updating, so please send me anything you have learned or tips you would like to see shared with others.

Astronomer?
Bring binoculars or a small telescope at best. Unless you are doing a recreation of the experiments to measure stellar defection caused by the gravitation of the Sun you really don't want a big telescope. The view through binoculars and small field scopes is more than amazing. Astronomers are encouraged strongly to see a total solar eclipse at least once. It might just change your ideas about how stars appear to the eye. My recommended telescope for eclipse chasing is the Questar 3.5". Very portable and amazing views. Plus if you are traveling to someplace different, it is a great field telescope for basic observing.

So what should you bring? Yourself, any required corrective lenses (and bring a spare), and binoculars. Beyond that, it is up to you but let me finish with this thought - those few minutes of totality will pass quickly. The less you have to do the better. Just sit back and enjoy the show!


Tuesday, 11 October 2016

Photographing the Solar Eclipse? PRACTICE!

If you want to get some nice pictures of the Total Solar Eclipse, you need to practice. Sounds like a good idea, but how do you practice for something like that?!

Canon SX60HS 1350mm EFL handheld

There really isn't anything quite like a total solar eclipse. The experience of seeing one is quite special. You will experience an adrenaline rush and time will seem to fly by quickly. Two minutes may seem like plenty of time, but just wait until you see that corona shining up in the sky around a black hole where the Sun used to be shining. For myself, it was not until my fifth total solar eclipse that my hands were not shaking slightly as I ran a camera attached to a telescope. It is an exciting couple of minutes. My best advice to everyone is to just watch and enjoy it. Yet, like myself, many will want to image the eclipse.

What can you practice on? The Moon! Take pictures of the lunar phases, showing the whole moon with plenty of room around it. For the eclipse, the Moon will be the "black hole" in the middle. The corona around it will be the object of interest. So your images of the Moon should only take up half or less of the image frame.

1000mm Canon SX60HS camera, handheld
Taking pictures of the Moon is great practice and can be very rewarding. Try it during different times and phases, even in the day light.

Crescent phases can be very enlightening. The brightness of the lit portion is easy to over expose when trying to capture the Earthshine. Totality is much the same. To capture the outer corona you must over expose the inner corona. And to get the inner corona you will over expose the prominences. What you can practice during the lunar crescent phases is manipulating your camera settings in the dark and eventually without even looking. Most digital cameras tell you the settings as they are adjusted in the display however you might not want to look at that display too long. Learning how to manipulate everything without looking allows you to look at the eclipse.

Another great practice target is to take pictures of the sunset. This allows you to practice wider field views of extreme variable brightness.

Sunset over the sea
And if you really want to practice eclipse conditions, try capturing the Green Flash at sunset! This takes split second timing on your behalf. If you see it in the view finder, you did not get the image and that is very much like imaging beads and the chromosphere.

Green flash, zoomed in 1365mm EFL
The more you can practice with your camera and lens rig, the better you will be prepared for the eclipse event and the better chance you have of getting an image you can be proud to share with others.

Just remember, no image is like the real thing when it comes to total solar eclipses. It is an experience and even after you have experienced a couple, it is a lot of fun and amazing to see.

More photography tips at: https://www.eclipse-chasers.com/photo/Photo.shtml

Tuesday, 4 October 2016

The Best Place for the Total Solar Eclipse

A frequent question that is asked is where exactly is the best place to view the total solar eclipse. Seems like a simple question and one that deserves a simple answer. So here it is: The best place to observe a total solar is in the eclipse totality path, under clear sky, where you are comfortable being outside for several hours.

The three conditions vary from eclipse to eclipse and from person to person. Thus I will expand on them.

Eclipse Totality Path


Getting in to the eclipse totality path is a matter of planning ahead. Some eclipses can be very difficult to reach because you have to go to the North or South Pole. Some are easier like just down the road a bit. How do you know? By exploring eclipse maps for upcoming total solar eclipses. The path of totality is a narrow band about 100 miles thick that stretches across the planet. Many times this band crosses oceans and just a little land (the Earth surface is 3/4 water). Sometimes large swathes of a continent are crossed as is coming in 2017 for North America. The eclipse path stretches from Oregon to South Carolina.

The following web pages provide maps of totality paths.
https://www.eclipse-chasers.com/php/showSeveralEclipses.php
http://eclipse.gsfc.nasa.gov/eclipse.html
http://www.eclipse-maps.com/Eclipse-Maps/Welcome.html
http://xjubier.free.fr/en/site_pages/SolarEclipsesGoogleMaps.html

For great maps of the 2017 Total Solar Eclipse
http://www.greatamericaneclipse.com
http://www.eclipse2017.org/2017/maps.htm

Under Clear Sky

This is the hardest of the three conditions. The weather changes from day to day and sometimes multiple times in the course of a day for many locations. Finding a clear sky is never a guarantee of any eclipse expedition. Local weather information is often the best source for day to day changing conditions.

When planning an eclipse expedition the general idea is to look at climate. Climate studies highlight the weather of the past and can be used to guess at the future weather. Of course, it is a guess. When traveling great distances the climate study is very important but when journeying a short distance it may not be as important. More important is the ability to relocate quickly should the conditions arise.

My own best solution is to have a contingency plan in place. Checking local weather information in the days prior and then moving to where the sky will be clear makes it much easier to reach clear sky.

Here is a great link for weather/climate information as it pertains to Total Solar Eclipses:
http://eclipsophile.com

Where you are comfortable

A big variable based on the person. Some are comfortable being in nature, exposed to the elements, with only the supplies you carry. Some are more comfortable near a toilet and shelter from the hot sun or freezing wind. It depends greatly on the location and weather conditions at that time. In addition the presence or absence of people can make a difference in terms of comfort. I can tell you from experience it is very uncomfortable to set up a telescope and camera near a group of playful or dancing youth. That's just me though.

I like being in an open area with facilities and shade near. The parking lot of a hotel, an open meadow in a state park, or even a roadside rest stop make for a fine location. I am not as interested in the scenery as the eclipse so it does not have to be in an epic location. And really - seeing a total solar eclipse take place in a somewhat normal setting adds greatly to the surreal aspect of the experience.

Groups are not for everyone. Some prefer solitude or a small select gathering of just friends. I've heard some great stories from eclipse chasers who went this route. Most involve encounters with wild animals, maybe another blog entry at a later time....