RAW File Loading in Photo shop ( using Camera Raw )

File > Open.. > Choose your CR2 file.

Check factors in [Basic]  and set the values as below.

Check factors in [Detail]  and set the values as below and press [Open Image] Button.

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Image Processing for Nebula Object

There are so many ways to make astro images from Raw File .

Here is one way using RawDigger + Photoshop. Read more