DeepSky Processor
Deep-sky processing in your browser

Turn noisy captures into finished space images.

DeepSky processes FITS and TIFF files with a dedicated astrophotography pipeline for galaxies, nebulae, and star clusters. Upload, run, compare, and download the result.

Process An Image Read the docs See before and after
300 MBFITS/TIFF uploads
1 clickfull pipeline
RGBcolor-preserving output
Processed emission nebula example

Built for the messy files real imagers upload.

DeepSky is designed around common SeeStar, FITS, and TIFF workflows: green casts, lifted backgrounds, noisy skies, faint arms, soft nebula structure, and files that may already be stretched.

Before nebula processing After nebula processing
Before galaxy processing After galaxy processing
Before spiral galaxy processing After spiral galaxy processing
Before galaxy pair processing After galaxy pair processing
Before Orion Nebula processing After Orion Nebula processing
Before Horsehead Nebula processing After Horsehead Nebula processing

Why use DeepSky?

Astrophotography processing usually means juggling multiple tools, settings, and guesses. DeepSky gives beginners and serious hobbyists a faster first result while keeping the workflow simple.

Cleaner backgrounds

Reduce color speckling and noisy sky while protecting stars and the main target.

Object-aware processing

Choose nebula, galaxy, or star cluster so the pipeline uses the right finishing style.

Pre-stretched friendly

DeepSky can skip the heavy stretch when an image already has a visible histogram.

Color preservation

RGB files stay RGB through preview, processing, and output.

FITS and TIFF support

Upload common astronomy formats without converting files by hand first.

Downloadable results

Review the processed image, then save the final TIFF or PNG.

From upload to result in minutes.

Upload

Drop a FITS or TIFF file and preview it immediately.

Choose target

Select nebula, galaxy, or star cluster for the right processing profile.

Run pipeline

DeepSky stretches, calibrates color, denoises, and prepares the final image.

Compare

Review before and after side by side, then download the finished TIFF.

FAQ

What files can I upload?

DeepSky currently accepts FITS, FIT, FTS, TIF, and TIFF files up to 300 MB.

Does it work with SeeStar files?

Yes. DeepSky is being tuned around real SeeStar-style FITS and TIFF uploads, including both linear and already-stretched files.

How does color work?

Siril handles color calibration and background extraction when the file has the metadata needed. Nebula mode then uses masked DeepSky color separation to enhance real red/orange and blue/cyan structure without coloring empty background.

Will it replace manual processing?

No. It is meant to produce a strong first processed result quickly, especially for users who do not want to spend hours tuning multiple astronomy tools.

Do I need an account?

Yes. Create an account or sign in to process images. Your first 5 images are free.

Ready to process your next capture?

Upload a deep-sky image, run the pipeline, and compare the result side by side.

Process An Image