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  1. #1
    OlorinofValinor's Avatar
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    Default Coronado PST + Baader 2.5X Zoom Barlow + DSLR = Solar image???



    Hi all.

    First post.

    Tried solar imaging today with PST + eyepiece projection adapter + 18 mm ortho + DSLR.

    Couldn't achieve focus (best attempt attached).

    In the Solar Viewing and Imaging Group (that I'm too new to join and post a reply to), TheyCallMeTJ said that using a disassembled TV 2.5 Powermate and a TV T-ring adapter allowed him to do DSLR photography with the PST.

    TV setup should be very good, but also a little pricey at $250.

    After a bit of searching, I found the Baader 2.5X Zoom Barlow, which is also convertible, and includes a T adapter, all for $129.

    Has anyone tried using this with a PST and DSLR?

    Thanks!

    Matt
    Attached Images Attached Images

  2. #2
    OlorinofValinor's Avatar
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    Default Re: Coronado PST + Baader 2.5X Zoom Barlow + DSLR = Solar image???

    Sorry, the Baader is actually 2.25X, not 2.5X.

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    Default Re: Coronado PST + Baader 2.5X Zoom Barlow + DSLR = Solar image???

    Do you take pictures in white light too? Just wondering...

    https://www.youtube.com/watch?v=yu1tk2zf0CY

    this is what I made for watching the Sun

    27102014SUN0016.jpg

    Using a 7 cm refractor, I could make this picture


    Wim

  4. #4
    OlorinofValinor's Avatar
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    Default Re: Coronado PST + Baader 2.5X Zoom Barlow + DSLR = Solar image???

    Hi Wim.

    No, I haven't ever had a white-light filter, and I'm just now becoming interested in photography instead of only viewing.

    Your video is great! Simple=GOOD. That looks like a nice afternoon project I can do together with my kids, and a way to put my trusty old 90 f/11 to good use.

    With snow in the forecast again, I guess I'll have some time to order some of that Baader film.

    Thanks!

    Matt

  5. #5
    OlorinofValinor's Avatar
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    Default Re: Coronado PST + Baader 2.5X Zoom Barlow + DSLR = Solar image???

    So, I got the Baader Hyperion 2.25X Zoom Barlow and tried it today.

    The short answer is: Yes, it reached focus with a normal T-ring and Canon DSLR.

    First pics aren't going to win any medals (they're certainly nothing like what you see visually). But it looks promising. The sun is a little less than half of the (FF) frame height, before cropping. And there's some ISO available to trade for shutter speed, which looks like it may be necessary for a stationary mount.

    We'll see how it goes next weekend...

    Clear skies.

    IMG_0820d_1440p.JPG

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    OlorinofValinor's Avatar
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    Default Re: Coronado PST + Baader 2.5X Zoom Barlow + DSLR = Solar image???

    Faster shutter, at the expense of ISO, was not helpful. Will wait for equatorial mount before trying again.

    Cheers.

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    Default Re: Coronado PST + Baader 2.5X Zoom Barlow + DSLR = Solar image???

    From what I understand you need to capture some video and stack the frames in registax.

    I have moved your thread here to the solar viewing forum where the members will be sure to have helpful advice for you.
    .

  8. The Following User Says Thank You to kingclinton For This Useful Post:

    OlorinofValinor (04-12-2016)

  9. #8
    OlorinofValinor's Avatar
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    Default Re: Coronado PST + Baader 2.5X Zoom Barlow + DSLR = Solar image???

    Thanks for moving the thread! It was pretty quiet in the beginner forum.

    Yes, I keep seeing posts about stacking, but know little or nothing about it. I guess I have a lot to learn.

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    Default Re: Coronado PST + Baader 2.5X Zoom Barlow + DSLR = Solar image???

    Okay, so this is over a year later, how is it going? I have been looking at getting a Baader 2.25 zoom barlow to do some dslr photography with a PST. Did you manage to improve your shots, Olorin? To clarify, you were *not* doing eyepiece projection with the barlow, you were simply doing barlow + DSLR? (technically not prime focus, "barlow-focus"?)

 

 

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