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swampwiz
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would spectators be able to see it? How about with 12X binoculars?
https://www.nytimes.com/2020/09/15/science/sun-solar-cycle.html
https://www.nytimes.com/2020/09/15/science/sun-solar-cycle.html
swampwiz said:would spectators be able to see it? How about with 12X binoculars?
https://www.nytimes.com/2020/09/15/science/sun-solar-cycle.html
.Scott said:Yes - even without the binoculars.
and ... ?.Scott said:The brightest part of the prominence shown in the link is about 1/3 the solar diameter.
(The entire prominence is well more than that and extends beyond the frame).
Based on your post #3 above, some portion of a prominence can be visible.davenn said:what is your point ?
How much does a rig like yours cost these days?davenn said:You are not likely to see much of it in visible light wavelengths
Prominences can sometimes be seen during total eclipses
from one of my eclipse photos, 4 small proms just visible
View attachment 269868
The image you linked to is ionised helium, He II
Much/most of it is easily visible if you have a hydrogen alpha solar scope like my
LUNT LS60 THa. It has a very narrowband H-alpha filter in it < 1 Angstrom specifically
to observe prominences
View attachment 269867
from that scope...
View attachment 269869
Quarkman1 said:I have the Coronado "Sol Ranger"
swampwiz said:How much does a rig like yours cost these days?
Sorry Dave, yes that is the finder scope attached to the Coronado (I wasn't 100% sure if the whole kit was called that). I got the whole assembly from OPT many years ago because I wanted to be able to sun-gaze safely ! I looked on the body of the scope but I didn't see a reference to the model, but mine looks very similar to the pictures you posted.davenn said:one of these ?
if so, that's just a finder scope to align the sun for viewing through the main scope, like this ...
The Coronado SolarMax 70 TelescopeMaybe you mis stated what you have ?cheers
Dave
A coronal ejection, also known as a coronal mass ejection, is a massive burst of solar wind and magnetic fields that are released from the sun's corona. During a total eclipse, the moon blocks out the majority of the sun's light, allowing the corona to be visible. This is when a coronal ejection can be observed.
If a coronal ejection occurs during a total eclipse, it can cause disruptions in Earth's magnetic field and lead to geomagnetic storms. This can result in disruptions to satellite and communication systems, as well as power outages. It can also create stunning auroras in the sky.
Coronal ejections are not directly related to total eclipses, so there is no specific frequency for when they occur during an eclipse. However, they are a common occurrence on the sun and can happen at any time, regardless of whether there is an eclipse happening.
In general, coronal ejections are not considered dangerous for humans. However, they can cause disruptions to technology and communication systems, which can indirectly affect human activities. It is important to monitor for any potential hazards during a coronal ejection event.
Scientists use specialized instruments, such as coronagraphs, to study coronal ejections during a total eclipse. These instruments block out the bright light from the sun's surface, allowing for a clearer view of the corona. They also use data from satellites and ground-based telescopes to track and analyze the ejections.