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  1. #1
    corpusse's Avatar
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    Default all I got to the show from my bust of a night - double cluster





    This is 8 minutes and 8 seconds of subs ranging from 50 seconds to 2 minutes, unguided through my 300mm lens.

    This lens sucks for astrophotography because you can't lock the focus. No darks no flats no nothing. I'm sure it will be a challenge to get the cap back on without adjusting the focus. It's just the stock lens you could get with the canon rebel for an extra 100 or 200$.

    These subs were shot through clouds I think that's why a couple of the surrounding stars were blown out. It certainly was not clear. Despite clear sky chart showing clear skies all the way through it clouded up almost immediately after getting to my dark site so I didn't even bother setting up my autoguider.

    Another unrelated problem is I had dew form INSIDE my C8. This is almost certainly due to imaging all night a few days ago and the scope was basically frozen solid in the morning. I'm sure some frost made it's way in. I've brought the OTA inside to warm up for a day and I will blow some warm air (not hot) inside to help eliminate whatever is left. Never had that happen before...
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    kwalker (11-08-2010)

  3. #2
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    Default

    Not too bad. Is this the 75-300mm ultrasonic telephoto? I've been using one with some good success for wide-field imaging although I'm looking to upgrade to the more expensive $800 one in the new year.
    Name: Jason
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  4. #3
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    Default

    Corpusse that is good mate.

    Wee tip for locking the focus on a lens ( any lens ) ? Get focus then attach Blu Tack or tape the focus ring at position. Et voila ! Trust me it does work.

    Clear Skies

    Pete
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  5. #4
    corpusse's Avatar
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    Quote Originally Posted by somecdnguy View Post
    Not too bad. Is this the 75-300mm ultrasonic telephoto? I've been using one with some good success for wide-field imaging although I'm looking to upgrade to the more expensive $800 one in the new year.
    Yes it is.

    At that price you are better off buying an APO refractor.
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  6. #5
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    Default

    Already got one. But I am also into normal photography as well so all my lenses are dual usage. Want to get a couple good ones for my Iceland trip in April.
    Name: Jason
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  7. #6
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    Default

    Very nice image.
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  8. #7
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    Default

    It is not bad, i think is great, you got a very clear view of the the clusters and considering conditions and lens it is quite good, congratulations.

    Regards
    Antonio
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  9. #8
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    Default

    I think its a very good image.
    you made the best effort in a tight spot and you won.
    thanks for sharing.
    Ken

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  10. #9
    corpusse's Avatar
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    Default

    I will try again from my home location tonight. If I can add another hour + of subs I should be able to get something better then this.

    Hopefully all the moisture inside my C8 has dried up.
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