Taken with the 100mm SS @ f16. Seeing and transparency not too bad today for a change!
Tuesday, 29 May 2012
Sunday, 27 May 2012
This is a 12 pane mosaic taken with the 100mm pst mod, alot of effort to do as at its native focal length of f10 sweetspotting and vignetting is apparent, taking alot od work in post processing to remove. Compare with the full disk in the post below, and I think I will be carrying on using the DS40 for my full disks; despite the DS40 only having 40% the aperture of the larger scope, the extra detail the tighter bandwidth delivers far outweighs the resolution the 100mm offers.
Saturday, 26 May 2012
Friday, 25 May 2012
Thursday, 24 May 2012
Despie less than ideal conditions in terms of seeing or transparency I still managed to get a full disk shot with the DS40. The sun is a real treat in double stack mode at the moment - get out there and observe it!
Wednesday, 23 May 2012
Tuesday, 22 May 2012
Been a while since it's been clear for long enough to image at multiple wavelengths - but fortunately today presented clear blue skies from dawn till dusk. As a result was able to get this shot in. All post processing done solely in Photoshop CS4 - not a wavelet in sight!
Best day of the year so far weather wise - it's been glorious! I was rushing to take the frames for this and ended up with some banding as a result - nevermind! Taken with the the DS40 @ f20 DMK31.
Monday, 21 May 2012
As monster spot AR11476 departed over the suns western limb it was replaced by more regular sized AR11486 on the opposite eastern limb. This new single spot has an interesting feature visble - a light bridge - a bright ribbon of plasma that arcs across the dark umbra of the sunspot. Despite this activity this is indicative of a decaying or dying sunspot and signifies the reestablishment of the granulation within the sunspot itself. The magnetic field within a light brige is observed to both weaker and more inclined than within the surrounding umbra, and their increased brightness relative to the surrounding umbra is a clear indication that the plasma temperature in this region is higher. It has also been noted that light-bridges often show enhanced chromospheric activity, with Ha surges and chomospheric jets reported in a number of cases. Light-bridges thus seem important for releasing magnetic energy stored in the spot as well as in its decay.
Despite hazy conditions today when this shot was taken, the forecast for the coming week is unusually summer like her e in the UK, so hopefully get somemore images as the week progresses...
Wednesday, 16 May 2012
The sun never ceases to amaze me as to how dydnamic it is. This image was taken over a period of about 4 minutes with the 100mm scope - this prom reminds me of an angry chomping pacman. Looks like cloud has returned to the UK now for a while - anybody got an anti-cloud machine?
Tuesday, 15 May 2012
Active Region 11476 is decaying further as it gets closer to the limb, with associated spots displaying only rudimentary penumbra. The chance of flares has fallen significantly with NOAA forecasting only a 15% chance of M class flares, and less than 1% chance of X class flares. Only 2 weeks ago this active region presented itself as one of the largest we have seen in years, however it was the spot that never was, and despite it's large size never really released any sizeable flare activity.
Monday, 14 May 2012
Clear skies this afternoon meant I was home sharpish after work today, and managed to get a nice shot of this shrinking active region - couldn't help but think it reminded me of a paw print! In another couple of days it will be passing over the limb. If the gaps in the clouds are big enough there is plenty to image at the moment!
Sunday, 13 May 2012
The sun is really photogenic at the moment, absolutely loads going on at a variety of scales. I initially took this pic to frame the proms and the pair of spots, but then upon closer inspection discovered there is a as yet un-designated active region visible, with what appears to be a single medium sized spot. Lets see what NASA decides to call it...