Hello
Today four active regions are visible on the Sun raising Wolf number to about 60. AR12713 is really hard to die, few days ago it seemed almost faded away, instead new small spots are still appearing. AR12714 changed a little between yesterday and today while activity in 12715 increased considerably, the leader spot has now a well defined penumbra although the group remains a modest one. A larger active area is now emerging from the E limb.
I made few discs with various filters and a close-up of AR12715 with K filter, unfortunately very disturbed by turbulence.
Thanks for looking!
New activity on the Sun
- krakatoa1883
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New activity on the Sun
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- sun20180620_FD_WL.jpg (287.45 KiB) Viewed 1294 times
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- sun20180620_FD_K.jpg (403.74 KiB) Viewed 1294 times
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- sun20180620_FD_CaH.jpg (394.84 KiB) Viewed 1294 times
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- sun20180620_AR12715_K.jpg (144.18 KiB) Viewed 1294 times
Raf
My solar images and reports with articles on solar equipment
My solar images and reports with articles on solar equipment
- ffellah
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Re: New activity on the Sun
Very nice and sharp disks, Raf. Great to see that there is more action on the sun now, more targets to shoot.
Franco
Franco
- marktownley
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Re: New activity on the Sun
Very nice indeed!
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
- Montana
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- krakatoa1883
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Re: New activity on the Sun
Thanks to all. Quark Calcium is a good device, I am very happy of it. May be it gives less contrast than the corresponding Ca-K modules by Lunt, but it costs less and doesn't have the oddities and the defects of the Quark Chromosphere and can be used with my solar newtonian also. Making some experiments with this device and my refractors I noted that although advertised for instruments as slow as f/7, Quark Calcium works best at more than f/10 and is really very fine around f/12-f/15, so for taking full disc pictures I stop down my 80 mm f/7 apo to 52 mm, for hires imaging I place a Barlow in front of it.
This morning I made some further images of the two main groups visible, AR12713 and 12715. I used my 150mm refractor at full aperture, 5x Powermate, Continuum and IR cut.
I tried again my K filter but I realised that for using it the seeing shall be really good otherwise images become blurred, I would say it requires to image the Sun within two hours from sunrise, after that the thermal turbulence becomes too high especially in a big city as Milan. This is the best I could obtain:
This morning I made some further images of the two main groups visible, AR12713 and 12715. I used my 150mm refractor at full aperture, 5x Powermate, Continuum and IR cut.
I tried again my K filter but I realised that for using it the seeing shall be really good otherwise images become blurred, I would say it requires to image the Sun within two hours from sunrise, after that the thermal turbulence becomes too high especially in a big city as Milan. This is the best I could obtain:
Raf
My solar images and reports with articles on solar equipment
My solar images and reports with articles on solar equipment
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Re: New activity on the Sun
These came out great, Raf ! AR2715 looks excellent and interesting.
Franco
Franco
- marktownley
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Re: New activity on the Sun
Really nice images Raf! Good info about the CaH quark
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
- Montana
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Re: New activity on the Sun
Cracking WL I know what you mean about Calcium imaging, has to be very very early!
Alexandra
Alexandra