Photoshop's Layer Mask allows you to high light certain areas of your image while leaving the rest of the image untouched. The Gaussian Blur is an important part of Layer Mask.
Unsharpen Mask is a great tool to Sharpen your image! Photoshop's Unsharpen = Sharpen!
"Photoshop curves" can be one of the hardest things to learn. Most Astrophotography software has the ability to STRETCH your image. STRETCHING your image should only be used to "preview" your astro image. To capture all the fine precious details of your Astro image use PhotoShop CURVES! I hope you find this tutorial useful.
Covers the basics of Photoshop Color Balance in Astro Images. Learn how to understand the Histogram, and levels to bring color balance to your astrophotography.
Get the most out of your One Shot Color (OSC) astro camera. Ever wonder how those Mono Astro cameras have beautiful color? This tutorial will teach you how to process your OSC image as a RGB image. Try it once, and you'll never process your OSC image any other way!