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Pete Presland

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Posts posted by Pete Presland


  1. Venus in reasonable conditions from the 12.02.2020.  Captured with Celestron C9.25, baader UV filter and Asi 290mm camera.

    Stacked 10% of 25,000 frames. Some decent cloud visible again, fascinating to see the difference in tonight's images compared to this years other images.

    The disc almost looked blank on the Firecapture preview screen.

    1736385621_2020-02-12-1708_2-UV-1_grad6_ap1copy.png.d1576d45675f9ac77253168d00ce20a1.png

    876675375_2020-02-12-1713_4-UV-2_grad6_ap1copy.png.4332399939fcc5d5946d3487fc50f174.png

    • Like 5
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  2. 7 minutes ago, lukebl said:

    That's very interesting. I wonder if I've just been blocking all of the UV light by having the UV blocking filter in place.

    There are two seemingly identical CS-mounts in the box, which have no identification marks on either, apart from the letters 'CS'. However, one of them has a pink bloom at certain light angles as you can see below, so I assume that's the UV-IR blocking one. I have been using the other one, which I therefore assume is the clear one and thus not the cause of the problem?

    49512304662_405557d680_b.jpg

    I think i would leave them both off when imaging in UV, if that is an option.

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