Some of the best proms for a while on todays disk - the one on the south pole is huge! You can see the small earth put for scale easily fitting within it!
Images of the Sun, our local star, at a range of wavelengths with specialist solar telescopes. Imaging tutorials, solar bits and pieces for sale, talks and outreach with the Charlie Bates Solar Astronomy Project CBSAP.
Tuesday, 17 April 2012
Saturday, 14 April 2012
Friday 13th Sun
Really did take some getting this image - friday was a day of towering cumulus clouds, with small, very small gaps in between, and these were short lived... I had several attempts to get the 6 panes as it kept clouding out on me, but, finally did get all 6 late in the afternoon. I made a mess of getting the flats for this, and didn't defocus as much as I should - my post avistack frames all had a dark patch, however use of the median filter, dodge and burn seems to have got rid of it. Hoping sunday is going to give me clear skies!
Ha Full Disk Tutorial
Best viewed in full screen, gives a good overview of the processing involved...
April Showers
After the pleniful observations in march last month, so far april has been a month of showers; with the trick having the clear bits of these showers for long enough... Got this full disk in Ha showing really not huge amounts of activity, the sun is very quiet especially seeing as we head towards solar maximum next year... As usual taken through the DS40 @ f20, 6 panes CS4.
AR11455
This cluster of spots was taken with the 100mm Tal, Baader D-ERF, Lunt Wedge & DMK31 @ f20. These results using the D-ERF seem quite promising. Interestingly this active region had been formed for some time before NASA decided to designate it.
Monday, 2 April 2012
AR11445 AR11449
A closeup of this decaying sunspot group using the 127mm frac at 2350mm focal length, 705nm TiO2 filter and Lunt Wedge.
Sunday, 1 April 2012
Ha Full Disk - 1st April
Despite a hazy day with poor seeing, it never ceases to amaze me what avistack is able to pull out of the raw data. Lots and lots happening again on our star, however my favourite today is the lovely double flame prom at 2 o'clock on the limb...
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