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Hi Tony,
Short answer is yes, more hours of data acquisition equals more information captured. Not more detail (resolution), that is determined by the the telescopes aperture size and local seeing conditions.
Consider the Hubble deep field image that was taken in 1995, For 10 consecutive days (240 hours) they took approx 350sub exposures of a random patch of sky, and after stacking revealed over 3000 distant galaxies going back billions of light years.
The Dragonfly array of 48 cameras and lens', for every 1 hour of capture time they collect 48 hours worth of data, in doing so they have discovered heaps of new and remote galaxies that nobody knew ever existed.
For most of us amateurs living in the suburbs we are limited by light pollution so more hours of capture time, just increases the background sky noise and swamps any faint objects..
Cheers
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