Questions tagged [solar-eclipse]

Questions about the complete or partial blocking of the sun by the moon.

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430 views

Why does the path of the moon in an eclipse curve (relative to the sun)

Reviewing several simulations of the solar eclipse, it is apparent that the path of the moon relative to the sun curves. Using https://www.timeanddate.com/eclipse/in/usa/kansas-city?iso=20170821 for ...
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1answer
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Might someone see changes to the corona during a solar eclipse?

I've seen many pictures of the corona during a solar eclipse, and the structure and delicacy is amazing. Clearly, the appearance would change over time, depending on the fine details of the solar wind ...
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95 views

Where can I still find solar film?

I, like many others, am excited to see the eclipse. I want to view the eclipse through my telescope, however, I don't have any solar safety equipment for solar viewing and I cannot find any online ...
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Will you be able to see the corona in a 90%+ partial eclipse? [duplicate]

I live in Champaign, Illinois (see map) and am planning to watch the August 21st solar eclipse. This community is within the 95% totality range, but not within the path of totality. Will I be able to ...
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Will I be able to see the “Beads of Baily” at 99%+ totality?

Where I am (Vancouver, WA), the Sun will be 99%+ covered. Will I be able to see the "Beads of Baily" when the sun is 99%+ covered in my area ? Downtown Portland, OR is expected to be 99.4% (according ...
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1answer
185 views

How can I tell if my solar glasses are up to ISO standards?

Like many, we bought solar glasses to view the eclipse, and are now in a strange place where we can't tell if they're safe or not. The big fuss seems to be about ISO 12312-2 compliance. Apparently ...
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3answers
268 views

Can you test solar eclipse glasses with a remote control?

By putting solar eclipse glasses directly between a remote control IR emitter and device receiver, could some unsafe glasses be detected? My guess is most fake glasses are just blocking visible light ...
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77k views

Is the sun any brighter during a solar eclipse

I keep hearing that you can go blind during a solar eclipse. Is the sun actually any brighter during a solar eclipse? This is how the media seems to frame it, and they suggest you need special ...
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Why my simulation of eclipse 2017 is wrong! [closed]

I made a simulation of total eclipse 2017 in Kansas city by StarryNight5.0 software and this software shows this eclipse will not be total in this city. Web sites says it is total. Where I was wrong ...
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What does a solar eclipse at 99% totality look like?

People smarter than me say the sun will be 99% covered during the 2017 solar eclipse where I live (Portland, OR metro). I am curious to know what it might look like (photo or drawing). Does this photo ...
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1answer
1k views

2017 Eclipse intersection with I-95

I am excited to see the 2017 eclipse in South Carolina and would like to understand where exactly the eclipse-path intersects I-95, so that I can plan a day-trip. I have approximated at roughly ...
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375 views

Solar Telescope Projector Screen? [& intro telescope for solar eclipse]

I don't know very much about telescopes; I used one a few times as a kid, but that's about it. I understand the general design & use of reflectors & refractors, but I don't know enough to ...
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1answer
1k views

Why shouldn't you look at the Sun through a camera using eclipse glasses?

One of the NASA approved eclipse glasses manufacturers has the following warning on one of their eclipse glasses: Do NOT look through a camera, telescope or binoculars with ANY eclipse shades on! ...
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723 views

How to test direct sun viewing glasses

I purchased a 10 pack of glasses for viewing the upcoming eclipse. They show to be ISO 12312-2:2015 certified. How can this be tested and verified?
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1answer
932 views

Why are three year old eclipse glasses not recommended?

NASA's eclipse safety page says that eclipse glasses should: Not be used if they are older than three years, or have scratched or wrinkled lenses Why shouldn't three year old glasses be used? Is ...
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1answer
198 views

What is the large astronomical instrument shown in this 1918 eclipse expedition photo?

This nice video musing about (among other things) the US Naval Observatory's $3,500 expedition to Baker City or at least Baker County Oregon to observe the June 18, 1918 solar eclipse, there is a ...
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Is the diamond ring effect visible in a 40mm hydrogen alpha telescope?

I'm going to Nebraska for the 2017 eclipse, and am weighing my options. I'm considering whether to pack my 40mm Coronado PST or to make a Baader AstroSolar filter for my 66mm William Optics apo. I've ...
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593 views

How accurate are NASA's eclipse predictions?

NASA's predictions for the August 2017 solar eclipse show that about half of Kansas City will see a total eclipse and the other half won't (they'll just see a "near" total eclipse, perhaps even Bailey'...
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Where would be the absolute most logical place in USA to observe the total solar eclipse on August 21, 2017?

Cloudy weather would defeat the purpose so I am guessing that the western states would be more ideal due to greater chance of clear sky. Isolation would also be nice. At a camp site on or near a ...
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148 views

Back-predicting solar eclipses

I want to back-predict solar eclipses as part of a research project. My main goal is to obtain a list of all solar eclipses that took place over a tight grid (let's say of 100km by 100km) for the ...
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328 views

Good ways to safely view an Eclipse?

August 21 is going to see a total eclipse across most of the US, and I'm planning a trip to what I hope is an ideal viewing location. What are good ways to safely view the eclipse? I don't want to ...
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829 views

Umbra, penumbra and antumbra

I'm trying to understand following schema of the wikipedia page here. Image subtitle is "Umbra, penumbra, and antumbra, for a lunar eclipse". Distances and sizes are not to scale. If distance ...
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83 views

In this image, where would the antumbra be?

In this image where would the antumbra be?:
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Viewing 2017 Solar Eclipse - How important is it to be in the center(blue line)?

I'm viewing the 2017 Solar Eclipse in Graham County, NC. How important is it to be in the center(blue line)? It is almost entirely national forest there so it would be fairly easy to get to assuming ...
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422 views

Eclipse comparison: May 20 2012 vs Aug 21 2017 as observed from San Francisco, CA

I'm preparing for the solar eclipse coming in August of this year, and want to make a decision on whether it will be worth my while to travel north from San Francisco. As observed from San Francisco, ...
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776 views

Relative brightness of the sun's corona

In preperation for the upcoming solar eclipse I'd like to practice my photography to be able to take some (hopefully) good photos of the corona during totallity. What is the brightness of the sun's ...
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1answer
135 views

When will solar eclipses become lunar transits?

When will the moon be far enough away from the Earth that we would no longer consider it a 'solar eclipse', but rather a 'lunar transit' when the moon travels between the Earth and Sun?
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Filters for solar eclipse and solar feature viewing

I have a Vixen ED100SF ED refracting telescope and 10x50 6.5 Bushnell Legend Porro Prism binoculars and would like to outfit both with filters for solar eclipse viewing. I gather the basic setup ...
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643 views

Terran eclipse?

Solar and lunar eclipses are pretty straightforward. But what about eclipses when you are standing on the Moon? I have been trying to Google the info, but there's some gaming clan that has taken the ...
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2k views

When the moon eclipses the sun what direction is darkened first: left or right?

I saw the question and answer for the explanation of the direction of the moon's eclipse from left to right, but what about the direction of the moon as it passes over or between Earth and the sun? ...
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1answer
287 views

Closest path of solar eclipse central line

I'm trying to calculate the closest path of the center line of a given eclipse at a given time by using its besselian elements; However i'm getting an error range up to 30 km (18.6 mile) in the worst ...
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1answer
103 views

Affect of leap seconds on the prediction of an eclipse

There seem to be irregularities in the motion of the earth, so we add "leap seconds" to adjust our time accordingly. Since 1972 there have been 26 leap seconds I think. If we extrapolate that ...
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523 views

Where can I find a solar eclipse calendar compatible with Google Calendar?

For planning purposes it would be good to have a calendar of upcoming (at least some years) solar eclipses. The closest thing I've been able to find has too many other events in it to be useful. A ...
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1answer
180 views

Solar Eclipse: How it occurs

In relation to the image above, although the topic relates to math, how can I visualise the situation described in the final equation presented, i.e., the declinations, ascensions, solar and lunar ...
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78 views

Can we measure/detect GR light bending during solar eclipse using ordinary equipment?

Suppose an amateur astronomer finds himself watching Solar Eclipse. He can see the stars around totality. Is Sun's GR effect strong enough for the amateur astronomer to be able to tell that a ...
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206 views

How far does the moon move relative to the sun during a solar eclipse

Let's assume 'solar eclipse' occurred Now, at what degree 'moon' will be in 'with reference to' earth (and) at what degree 'moon' will be in 'with reference to' sun In other words, by 'how many ...
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At the moment of total solar eclipse what are exact distances of Moon & Sun to the Earth

By total eclipse I mean the Moon and Sun are seen equal in size, neither of them is bigger. For example, the Moon's average distance is 384000 km and the Sun's average distance is 149.5 million km. ...
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125 views

Why does the eclipse in this video look annular?

In this article about the AS870 flight that flew through the umbra of the March 8-9 2016 solar eclipse, there is a link to a YouTube video showing the eclipse recored by a handheld camera in the cabin....
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Eclipse Cycle Calculations Needed

I am writing a work of fiction about a world where: The length of a year is 335 days. The world has two Moons. Moon A is Larger and further away with a 78 day lunar orbit. Moon B is smaller and ...
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57k views

Is it safe to watch solar eclipse's reflection in water?

There will be a solar eclipse soon at my area... naturally I want to watch this with my son. Is it safe for us to watch the solar eclipse's reflection in the water? There is a swimming pool near my ...
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Reasoning questions on eclipses

why doesn't a solar eclipse occur in every new moon? I know one reason is the inclination of Earth's orbital plane. But is there another?
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137 views

Eclipse — Solar and Lunar

Q. Why is solar and lunar eclipse not seen from all parts of the earth at the same time? I think its because of the revolution of the earth but i am not sure. I want a more reliable answer.
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958 views

Can all areas on Earth experience a total solar eclipse?

A solar eclipse only puts part of Earth at a time in shadow, so I'm not talking about a solar eclipse that casts a shadow over all of Earth. What I mean is: are there any areas on Earth where, no ...
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How could eclipse happen on the same day in a different calendar? (45 AD)

According to the eclipse calculator I use (Alcyone), a partial eclipse 0.314 magnitude occurred August 1, 45 A.D. in Rome starting at 8:35am local time. This would seem to correspond to an eclipse ...
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Why are there no stars on New Horizons images of Pluto

I followed the New Horizons Mission a little, and saw among others this image of Pluto: I wonder, why you can't see any stars on it. As far as my very basic knowledge in astronomy goes, I think you ...
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95 views

Eclipse on the moon

What kinds of eclipse is seen by the person on the moon, when there is: Solar eclipse on the earth, and Lunar eclipse on the earth?
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Which is more rare: Lunar eclipse or Solar eclipse?

Which is more rare: Lunar eclipse or Solar eclipse? Please explain why either one is more rare than the other. Thank you in advance for your inputs.
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Total solar eclipse, supermoon, and spring equinox all happening at the same time: anything special about this?

Today (March 20, 2015) is seeing a rare combination of the spring equinox, a total solar eclipse, and a supermoon. I am wondering if there is anything special astronomically about all three of these ...
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183 views

Why solar eclipse paths are symmetrical?

Reading upon the eclipse of March 20, 2015, I stumbled upon this page: http://www.timeanddate.com/eclipse/list-solar.html. What caught my eye is that for each year there are two eclipses whose paths ...
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.2015: When last did both New/Full moon in a fort-night cause an Eclipse?

Going through http://earthsky.org/…/dates-of-next-lunar-and-solar-eclipses I made the (what was for me - momentous) discovery that March 20, 2015 - New moon - is a Solar Eclipse, and that the ...