Hey everyone, I'm pretty happy with my results from M20 but as I'm trying to make sure I get the most out of my imaging sessions I've been reviewing the data and I'm confused. The 600 second exposure is showing less detail than the 300 second frame. I'm tempted to think that this is just a signal/noise ratio which will be equalised with stacking, but I'm also worried that I'm wasting my time with 10 minute frames when I could be stacking more (more useful) 5 minute frames?
I'm using a modded 450D (not known for their low noise
) which operates around 22-25 degrees, so I'm obviously pushing the limits at 10 minutes but I thought there would be a noticeable difference between the two exposures?