Stacking

Stack tool

Stacks a folder of sub-exposures: standard stack, automatic HDR stack, automatic comet stack.

How to use it

1. Click Stack and choose the folder of sub-exposures.
2. Tick what applies: several exposure times (Exposures) for the HDR stack, Stack on a comet for a comet. Then Analyse.
3. Choose the subs to keep and the reference, then Stack. Open in COSMO opens the result.

Settings

Exposures

One box per exposure time found in the folder; tick those to stack together.

Stack on a comet

Looks for a comet by its motion and writes the combined image, the comet stack and an animation.

Best 90 / 75 / 50 %, or a custom share

The share of the best subs to keep, to the percent.

Reference

The sub the others are aligned on.

When to use it

First, to turn raw sub-exposures into a stack. The HDR mode combines long and short exposures of the same target; the comet mode finds the comet by its motion and writes the combined image, the comet stack and an animation.

Image

Works on a folder of raw sub-exposures.

Examples

long exposuresHDR stack

aligned on the cometcombined