Read it here:
https://starizona.com/tutorial/planetary-imaging/
Although i may not totally understand their meaning.
Quote:
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The most common accessories for amplifying the image are Barlows and eyepiece-projection adapters. If your telescope has a fairly long focal length (2000mm or more) a Barlow will probably be sufficient. The exceptions to this might be if you have a CCD with very large pixels (16-microns or more), or if you are seeking the most detail possible and have very good seeing conditions. For smaller (shorter-focal-length) telescopes, or for large-pixel CCDs, the usual method of magnification is eyepiece projection. By shooting through an eyepiece, more magnification is provided than a Barlow can give
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