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    Default Does a Guide/Imaging Camera do both at the same time?



    As the title says, can a Guide/Imaging Camera such as the Altair GPCAM3 290M guide and take photos/video at the same time?

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    Default Re: Does a Guide/Imaging Camera do both at the same time?

    No. It does one or the other, but it can't do both at the same time.

    A few years ago, someone did make a dual camera that could do both simultaneously. Basically, it was two cameras in a single housing. It was kind of a wacky idea, and was too expensive for normal people.

    The requirements for guiding and imaging are different and mutually exclusive. In a long exposure, long enough to need guiding, you are reading the pixels as seldom as possible, in order to allow incoming photons to be accumulated. That means that you can't read them during a long exposure, or you'd cut the exposure short.

    But the whole point of guiding is to take many short exposures during the long imaging exposure, in order to make adjustments while the exposure is taking place. If you can only take guiding exposures between imaging exposures, guiding is pointless. So you can't do both with a single camera.

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