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Thread: Imaging with long focal length

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    Default Imaging with long focal length



    What is generally considered the biggest difficulty with imaging at long focal lengths ?? Is it the tracking of the mount , seeing conditions ?
    11" edgehd Cge pro, takahashi fsq 85. To many filters and things to name, favourite being 31mm luminous and mk3 Baader zoom. Astro modded canon 6d and zwo 174

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    Default Re: Imaging with long focal length

    Tracking

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    Default Re: Imaging with long focal length

    Everything.

    The higher the arcsec/pixel ratio, the easier it is.

    I'm assuming you're talking about DSO. Planetary issues would mainly be with seeing and other conditions.

    Dan
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    Dan Crowson - O'Fallon MO

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    Default Re: Imaging with long focal length

    yes DSO. Using the 11" edgehd with focal reducer and cge pro at f7. What would be a decent rms with the guding to get images ?
    11" edgehd Cge pro, takahashi fsq 85. To many filters and things to name, favourite being 31mm luminous and mk3 Baader zoom. Astro modded canon 6d and zwo 174

 

 

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