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Kev M

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Posts posted by Kev M

  1. I have one of these, the same one in Gold, it works just fine for astrophotography.

    "In my opinion"

    It is a much better visual scope than the shorter focal length ones.( eg 80-ED )

    It will beat these shorter focal length scopes on brighter objects such as planets and brighter galaxies and nebulae as they will be larger and will also have less colour distortion.

    Wont be as good on fainter diffuse nebulae ( horses for courses ).

    Suggest your best investment before a reducer is to sort out getting a guide camera. ( small ZWO ones seem popular, there are many others ).

    Also you will need a astrophotography camera of some sort, again best budget option is a canon DSLR ( anyone with "liveview" is fine to start with EOS 450D onwards, readily available 2nd hand )

    You have a bargain there indeed.

     

    • Like 1
  2. When I take Light Plan Images with APT they are inverted ( top right becomes bottom left etc ) from when I just take an image using the shoot button.

    Never noticed this before and cant see any option to invert image.

    Is this normal or have I screwed something up ...again ?

    ( windows 7 with a Canon 450d ).

     

  3.  

    If its not in manual mode APT will tell you that.... I do this al the time accidently.

    What has changed since the last time it connected...have you installed anything or changed to a different USB port ?

    I would suspect that something else has grabbed it and refuses to release it.

  4. 1 hour ago, ollypenrice said:

    Here we have the antidote to the F ratio myth conversation because we have different apertures at the same focal length, meaning that the F ratio becomes a truly meaningful number. The increase in speed is pretty spectacular, as we'd expect.

     

    I read that as the other way around.

    F ratio would only be meaningful at "the same aperture" surely ?

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