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Old 28-10-2020, 07:07 PM
Eris (Gerard)
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The Sun in Ca II K and Ha 28102020

I had another go at the Sun today knowing that for the rest of the week weather-wise it is going to be bleak. I imaged first in Ha and then switched to double stack mode (thanks again Ken for your good advice re aspects of tuning in this area). I still have a long way to go but today’s results are an improvement from the last outing.
In Ca II K, I noted some very small prominences. The contrasting surface features and in particular AR12778 were quite prominent. Luckily I completed what I had set out to do. Enter the clouds…
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Click for full-size image (Sun Ha Single Stack.jpg)
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Click for full-size image (Sun Double Stacked 28102020.jpg)
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Click for full-size image (Sun Ha AR12778.jpg)
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Click for full-size image (Sun Spots in White Light.jpg)
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Click for full-size image (Sun Full Disc Ca II K.jpg)
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Click for full-size image (Sun_012631_CaK_281020 Colourized.jpg)
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Click for full-size image (Sun Ca II K Prominence Colourized.jpg)
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Click for full-size image (AR12778.jpg)
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Old 28-10-2020, 08:13 PM
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Merlin66 (Ken)
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Gerard,
Well done, mate!
You've presented an excellent collection of images.
I do like the CaK images.
Keep up the good work.
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Old 28-10-2020, 09:07 PM
PeterM
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Wow Gerard bravo! Full disc - now that's the way to open a set of images! Really good to see and I really like the 6th CaK image.
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Old 28-10-2020, 10:04 PM
Saturnine (Jeff)
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Very good set of images, thanks for posting and sharing. From what I saw briefly today, it is an impressive AR.
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Old 29-10-2020, 10:25 AM
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AstroJunk (Jonathan)
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Awesome stuff - Looks like a great sunspot group has developed since the clouds rolled in over qld, must get a look at it today!
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Old 29-10-2020, 01:00 PM
Eris (Gerard)
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Thanks guys for your comments they are appreciated.
I've added one image that was left out from yesterday's post -a whole disc prominence shot in Ca II K.
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