You absolutely can drop those frames. Exoplanetary transits are generally in the range of 1 to 4 hours, and hundreds of exposures may be taken in that time. In

You absolutely can drop those frames. Exoplanetary transits are generally in the range of 1 to 4 hours, and hundreds of exposures may be taken in that time. In my undergraduate I studied astronomy and some of my classmates did an exoplanet detection project with a 61" scope and had issues with satellites on a handful of frames. Sure, it sucks to lose 2 minutes worth of data, but it's not even lose to catastrophic when you have the data before and after as well.