Reply To: To stack or not to stack, which is best? › Forums › Photometry › To stack or not to stack, which is best? › Reply To: To stack or not to stack, which is best? 17 June 2026 at 5:45 pm #640761 John CoffinParticipant Great, thanks for your advice Robin and Andy. I assume you use the propagation of errors formula Δz = √((Δx)² + (Δy)² etc ) to work out the total uncertainty.
