# StarNet2 - Star Removal Tool

## Overview

StarNet2 removes stars from astrophotography images and replaces the active view with a starless result. It can also generate optional auxiliary star images for later processing.

## Processing Options

### Stride

Stride controls tile overlap during star removal. The default value is Standard.

- Large: use for super wide landscape images.
- Standard: recommended default for telescope images.
- Small: slower; may help with extremely large stars.

### 2x Upsample

Upsamples the image before star removal and resizes the result back to the original dimensions afterward. This can help in some undersampled cases, at the cost of additional processing time and memory.

### Linear Data

Uses the current Screen Transfer Function to stretch linear data before processing, then de-stretches the result. For linear data, set an appropriate STF before running the process.

## Output Options

- Starmask: generates a subtractive starmask image in addition to the starless result.
- Unscreen stars: generates an unscreen stars image in addition to the starless result.

## Input Notes

- StarNet2 supports grayscale and RGB images.
- Images must be at least 512x512 pixels.
- Complex images and images with alpha channels are not supported.