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Thursday, October 25, 2007 - 11:04 pm ET
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Oh How I Wish For Solar Maximum

20071022.173729.Dpm.AslI love my Coronado PST Halpha telescope. I also love my new iOptron mount that guides it. Now I wish the Sun would cooperate and give me something a little more interesting to look at.

As you may know, the Sun has an 11 year activity cycle. During its maximum, you can see all kinds of cool filament structures on the disk, bright active regions over sunspots, huge promimences on the limb and all kinds of other cool things. The picture at left is how things are right now, this is an halpha image of the Sun taken last Monday. Not very much there, huh?

Ssn Predict-1As you can see in the diagram on the right, we are at solar minimum, the doldrums so to speak. The number of sunspots is at its low point in the activity cycle and things will be this way for a couple of years before they pick up again.

Counting sunspots has always been an easy way to measure solar activity, but by themselves they don’t contribute much to total solar output. Rather, it’s the magnetic activity that accompanies the sunspots that produce the impressive and dramatic solar events like coronal mass ejections, solar flares and prominence eruptions.

In other words, the cool stuff in the eyepiece of my PST.

Here’s a picture of the difference:

Solaractivity
Halpha images: MLSO

I know, tell me about it.

Ah well, I can wait three to five more years for the cool stuff, I’m not going anywhere. In the meantime, there’s still the occasional active region and quiescent prominence to help pass the time.

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3 Comments

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  1. By Astroprof
    1043 days ago

    I hear you. We are covering the Sun in my astronomy class, and I’d love to take the students out to look at it, but there’s nothing much to see at the moment! While that, in itself, is instructive, it is also quite boring. I am waiting for at least one good sunspot group to come by.

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  2. By julie
    1043 days ago

    What do you call it an astronomer who goes to the gym and lifts weights every week?

    Answer: Astronomybuff

    Oh Tony, you are so astronomybuff. Btw, nice shoes.

    Reply

  3. By Bob
    1042 days ago

    : ((, I was just out with my PST, and notta. I got mine a couple years ago, there ws something every other day, I was beginning to think I broke it, there hasn’t been anything for ages.

    Reply

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