No much activity today, AR12708 does show only few tiny spots in a modest bright plage. I imaged the disc and the AR with my 150mm refractor with aperture reduced, results are similar to those I obtained with my 80mm apo, no much difference. Turbulence was too high for making use of the 130mm newtonian.
Based on SDO images another active region seems to be emerging from the E limb, now is still beyond sight.
Minor Ca-H activity of May 6th
- krakatoa1883
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Minor Ca-H activity of May 6th
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Raf
My solar images and reports with articles on solar equipment
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Re: Minor Ca-H activity of May 6th
These are excellent!! nice to see Calcium H for a change
Alexandra
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Re: Minor Ca-H activity of May 6th
Very nice FD image. Your Ca H flter is really fine.
Christian Viladrich
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- krakatoa1883
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Re: Minor Ca-H activity of May 6th
Thanks for your comments. The system works best with slow scopes, say up to about f/10, at lower f/ratios images are slightly less detailed (and achromats add their own color aberrations).
Raf
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Re: Minor Ca-H activity of May 6th
Stopping down the scope is the key! Great images with the CaH quark
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