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Calculate Barlow for camera sensor


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Hi all

I want to have a go at imaging Jupiter and so want to get the image as large as possible.

Can anyone tell me how to calculate whether it's helpful to use a Barlow.

I've read it's to do with the telescope focal length and camera pixel size.

I'm using a Celestron Nexstar 4se focal length 1325mm, with a ZWO 662 pixel size 2.9um

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