# First steps – pre-processing with scripts

By Cyril Richard

This tutorial explores your first steps with Siril and its scripting capability.

Siril comes with a few basic scripts. They allow you to preprocess your images in one click!

##### 1. Create the folders to hold your images types. #

Create the following 4 directories named as:

• biases
• darks
• flats
• lights
##### 2. Put your RAW images in the directories created in the previous step. #

Attention: don’t mix other files, even JPEG (or other formats), with your RAW files: Siril will take all the files inside the directories as input files for processing.

##### 3. Click on the home button and navigate to your project folder . #

This is tell SIRIL where all your images are located.

##### 4. Click the Open button. #

SIRIL will validate your working directory.

##### 5. Click on the Scripts button and select the script of your choice. #

The main script that covers basic needs is named OSC_preprocessing. We recommend to use this one over the Drizzle version.

If you don’t see the button, do the follwoing:

1. Go to your preferences (ctrl + P)
2. Remove all script paths (as shown in the following screenshot).

2. Close and restart Siril.

You are now ready to run a script.

If you need more scripts:

1. Click on the hamburger menu and on “Get Scripts”.

Script files are text files with ssf extension.