To help reduce noise in high ISO shots, stacking is becoming a popular option for astro-photographers. First, you must take a number of shots back-to-back with as little delay between them as possible. This means you won’t want any kind of 2-second delay or long exposure noise reduction turned on. Second, you’ll take anywhere from 4-20 shots. We recommend staying in the 8-12 shot range for best results and ease of use. When you get home, you’ll do some minor pre-processing of the RAW files and save them as uncompressed TIFF images. Next, you’ll load them into a software program that will align them and stack them using median averaging. For PC Users, we recommend using Sequator (click HERE for that procedure). For Mac Users, we recommend the program called Starry Landscape Stacker. You can view the PDF below for our Starry Landscape Stacker Procedure where we walk you through our best practices.