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shropshire lad

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Posts posted by shropshire lad

  1. 9 hours ago, Mr Green said:

    Sorry I meant, dovetail for the scope, not mount....

    I have a budget of around £500 so think that might not be enough for all the bits, Also need to decide if the upgrade will give me much better images (I have included a few of my images). I would like to get a decent image of Saturn and Jupiter.

    20210121-Andromeda Galaxy.jpg

    images (1).jpg

    images (1f).jpg

    images (2).jpg

    images (3).jpg

    • Like 1
  2. IMG_9665.thumb.jpg.0e7604816fc2000d04652b71167047b4.jpg

    8 hours ago, Mr Green said:

    Hi,

    You'll probably get a few responses but thought I'd say hello.

    I have the SW 72ED and a Canon 500D therefore the camera model is different but setup potentially very similar.

    Are you just starting out?

    No, been stargazing for around 3 years now, but never had a telescope only been using my Sigma 150-600mm C lens but want to upgrade to a decent scope.. 

  3. 8 hours ago, Elp said:

    The lever is a very common thing in videography for focus pulling. From my use with all sorts of lenses both old and modern it's not really necessary though for star focussing, you can always reduce slight star bloat post process.

    Thank you Elp, what software do you use for this?

    Paul

     

  4. 45 minutes ago, ollypenrice said:

    My (limited) experience with camera lenses says that you need a micro-focus to avoid going mad. Mechanical ones are available from Telescope Service. Alacant's point above makes sense, though.

    Just putting an improvised lever on a lens or focuser can also help with micro-adjustment.

    Olly

    How do you mean an improvised lever ?

     

  5. 2 hours ago, alacant said:

    So focusing with the mask will leave you with coloured halos around bright stars. Use it to get you close, then lose it.

    Now, using zoomed in live view on the same star, adjust in tiny amounts until the blue [1] halo just disappears.

    Cheers and HTH 

    [1] not familiar with the 600 so the residual halo may be red; same idea.

    Sorry dont fully understand your answer, If I lose the mask then I will lose the coloured halo's wont I .... 

    Also the Sigma lens is the 150-600mm f5-6.3 C lens.

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