Photoshop 1: Basic Concepts for OSC Processing, by Don Selle


This workshop covers basic Photoshop concepts necessary for enhancing a one-shot color (OSC) image that has been calibrated and assembled in other software.  Topics include:

  • Why use Photoshop?
  • OSC Processing Workflow
  • Destructive vs. non-destructive edits
  • Exposure and contrast adjustments
  • Global edits with destructive tools
  • Global Non-destructive adjustments using layers
  • Intro to Color
  • Basic color balance
  • Sharpening and Noise Reduction

Photoshop is a very broad and powerful program with many tools that can be used for almost any type of image processing. The objective of Don’s Photoshop sessions is to give you a basic understanding of processing astro-images with Photoshop, and to highlight the Photoshop tools and techniques most commonly used to make your astrophotos pop.


Basic knowledge of image processing. Although not required, it will be helpful to already be familiar with how to perform basic functions with PhotoShop.

Daytime session (1 hour 30 minutes)

Monday, May 18, 2020, (1:30 – 3 PM)