Code Obsession

Mac software for astrophotographers who care about their data.

You spend the night getting the photons. We build the tools that take care of what comes next: knowing what you have, finding it again, and getting it ready for processing. Both apps are native Mac software, they work on the files you already have, and neither one changes them behind your back.

Explore Observatory Explore FITSit

Two apps, one goal

Fewer hours on housekeeping, more under the stars

Observatory

Your astrophotography library.

Drop your imaging folder on Observatory and it builds a library that organizes everything by session, target and equipment, without copying or modifying a single file. See how much integration time you have on every target and filter, find any frame in seconds, and plate solve to tag and label everything in the picture. It also downloads research images from professional observatories, and adds Quick Look, Finder thumbnails and Spotlight search for FITS, XISF and SBIG files to your Mac.

Sessions, targets, equipment and tags, organized automatically
Integration reports for every target and filter
Plate solving with object overlays, down to comets and asteroids
Albums, smart albums, ratings, notes and bulk metadata editing
10+ professional archives at your fingertips

USD 59.99 · free demo available Explore Observatory

FITSit

Look after your FITS files.

FITSit is the quick tool for the folder in front of you. Blink a night’s frames to spot the clouds and the satellite trails, measure every frame’s stars and tick the ones that fall short, rename files from their own headers, and fix a wrong OBJECT or FILTER across a whole session in one edit.

Blink a folder like a slide show
Measure star count, HFD, FWHM and eccentricity for every frame
Rename files from a template of their own keywords
Read and edit FITS headers, in one file or many

USD 9.99 · coming soon Explore FITSit

Better together

Imaging nights follow the same path

Each app has its place on it.

Before the library

FITSit

Cull the bad frames, fix the headers, give the files sensible names.

In your library

Observatory

Organize, search and plate solve everything you’ve ever shot.

	Before the library	In your library
The job	Clean up a fresh folder: cull the bad frames, fix the headers, give the files sensible names	Organize, search and plate solve everything you’ve ever shot
The app	FITSit	Observatory
Best for	A folder, right now	Your whole imaging history

Tidy the night with FITSit, then let Observatory catalog it. Your frames arrive with the right names and headers, and the bad ones never clutter your library.

Use either alone, too. Neither needs the other, and both are regular one-time purchases. Observatory has a free demo, so you can try it before you buy, and FITSit is coming soon to the Mac App Store.

Our promise

What you can count on

Your originals stay yours

Observatory never copies, moves or alters your master images. FITSit writes to a file only when you click Save or Rename, and moves nothing to the Trash without your say-so.

Made for the Mac

Native apps for Apple silicon and Intel, built on the macOS features you already use: Quick Look, Spotlight, the Finder, Metal and Time Machine.

Made for real astrophotography

FITS files from any camera, one-shot-color or monochrome (and XISF, SBIG and RAW in Observatory), from a night’s hundred frames to a decade’s tens of thousands.

No AI

No invented pixels and no “enhancing.” What you see is your data.

The details

And the small things that add up

Finder integration

Observatory’s Quick Look and Spotlight plugins give your FITS, XISF and SBIG files thumbnails, previews with their headers, and search in every Mac, whether or not you use a library.

Acorn plugin

Open your FITS, XISF and SBIG images at full bit depth in the Acorn image editor.

Documentation

Both apps include a Help book that covers every window and shortcut.

Get started

Pick the app for the job

Get Observatory Explore FITSit

Questions or feedback? We’d love to hear from you: support@codeobsession.com