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Archive for June, 2013

The Sun 13-6-13

A cloudy and showery day with a few holes in the cloud, one of which allowed me to catch the nice collection of fairly large prominences on view at around 4.30pm. The whole disk is striped with filaments of varying size. The large filament in the south is still clinging on and may make it to the limb in the next couple of days. If it does we will be able to see what it looks like in profile when it turns into a prominence..hopefully a big one!

Images taken with Coronado PST 40mm  &  DMK41 USB camera. Processed in Registax 6, Adobe Photoshop Elements 9, Adobe Lightroom 4.4

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Categories: Solar

The Sun – 9th June 2013

Had a quick look at 10.45 UT this morning and was amazed to see a large extended prominence lifting off from the NW limb (top right) which had disappeared by 11.15 UT. It was extremely faint in the 40mm PST and increasing gain or exposure on the DMK video camera just burnt out the other proms so I had to increase the gamma a lot, which resulted in the colour halo you can see around the disk.

The long filament in the south east quarter (bottom left) appeared to be breaking up with a clear split in the centre.

Images taken with Coronado PST 40mm 10.45-11.00 UT &  DMK41 USB camera. Processed in Registax 6, Adobe Photoshop CS2, Adobe Lightroom 4.4

Hydrogen Alpha – Large and faint prominence lifting off top right

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Hydrogen Alpha – large filament

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Categories: Solar

The Sun – 7th June 2013

It’s been just under a year since I have done any astronomical imaging and even longer since I have imaged the sun, which is a terrible state of affairs ! Last years horrendous weather pretty much killed my enthusiasm with barely any cloudless days and tons of rain. Amazingly we managed to time our holiday with some outstanding clear skies and although the sun is not particularly active today I could not resist a look. It has also been useful to remind myself how to process the images…which still takes ages. Quite pleased I captured some reasonable detail as the atmospheric seeing was pretty turbulent – that’s all down to Registax 6 of course, amazing software.

This set of images were taken between 9-10am UTC using the Coronado PST/Coronado CaK/Lunt CaK B1200 on a Vixen 115s. IS DMK41AU02 USB mono video camera. Images processed in Registax 6, Adobe Photoshop CS2 and Adobe Lightroom 4.4

Hydrogen Alpha Disk with central active region AR1765

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Hygrogen Alpha close up of long filament (bottom left) and AR1765 (top right) Image

Hydrogen Alpha detail of prominences

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Calcium K disk

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Calcium K surface with AR1765

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AR1765 Sunspots in Calcium K

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Categories: Solar