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sheri_barri

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Posts posted by sheri_barri

  1. A few regions of sunspots remain visible in whitelight. Remarkably, the active regions visible in CaK appear to be quite strong and coincide with several of the filaments in H-alpha on regions that appear devoid of activity in the white light view.

    On this day I tried to do a comparison between the WO110 and Baader Hershel Wedge with the same wedge on a Revelation 80mm. The detail remains very sharp on the sunspot regions although a larger portion of the disk of the sun is visible through the smaller aperture. The Revelation has always been a favourite Go-To travel scope for dark skies and lunar eclipses, nice to see the same quality apparent in the solar area as well.

    Thank you for looking.

    Sheri

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    • Like 3
  2. Another day of interesting sunspot groups and magnetic activity. Two of the groups resemble tadpoles. The dominance of filament activity on the 20th is the most I have witnessed recently. They seem to criss-cross the solar surface between the areas of magnetic disturbance when the H-alpha is compared to the CaK view.

    Thank you for looking.

    Sheri

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  3. Waiting to see if the forecast improves for the Transit tonight is providing a good chance to work through the solar imaging backlog.

    The sun on the 19 May displayed some strong regions of sunspot activity as well as a stunning prominence off the SE limb that changed markedly over a few hours. The sun still looks quieter than expected at this build up to solar maximum.

    Thank you for looking.

    Sheri

    Equipment:

    Lunt60 with 50mm double stack filter

    PST CaK 40mm

    WO110 with Baader Herschel wedge

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    • Like 1
  4. Worth a try. I use a skynyx 2.1 and need to unscrew the 2x barlow lens and screw it direct to the CCD nosepiece to allow focusing. After trying a range of barlows from 2-5x, the 2 keeps the Newton ring effect to a minimum when in focus. Bit of trial and error but some combo will work.

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