Object Planner
A private object planner in one HTML file on your machine: no account, no cloud, no server to talk to.
This is not a screenshot. It's the real tool, running right here: go on, put something in it.
Forged into a knife, this tool ages with use: the blades you reach for wear soft, entries you tend keep their bloom, and the years travel with the file through every reforge.
Half of stargazing happens at the kitchen table, deciding what deserves the next clear night. The Object Planner keeps your target list ready: the object, when it's best seen, and a notes box for RA/Dec and anything else you'll want at the eyepiece.
What it keeps
- Targetshort text
- Best seenshort text
- RA/Dec, notesnotes
Standing facts
- One HTML file. Opens in any modern browser, on any operating system.
- No account. No login, no sign-up, no e-mail wall.
- No cloud. Nothing leaves your browser: no server, no telemetry, no analytics.
- Yours forever. The file keeps working whether or not Offline.Ltd does.
- Ages with use. Entries you tend keep their bloom; the years travel with the file through every reforge.
In ten years
Whatever you put in (Target, Best seen, RA/Dec and notes) stays inside the file itself. There is no account to lapse, no plan to be sunset, no migration e-mail with a deadline in it. A decade of object planner entries is a decade of your own handwriting, kept in a document you can back up like any other.
If Offline.Ltd closes tomorrow, nothing on your machine notices. That isn't a marketing promise; it's simply what a file is.
Getting your data out
Export to CSV from inside the tool and open it in anything: a spreadsheet, another app, a text editor. Or keep the HTML file: it is plain, readable, and inspectable; you can open it in a text editor and see your own rows sitting there. No export queue, no "we'll e-mail you a link within 48 hours", no format that only one vendor can read.
Copy the file to a USB stick, a NAS, a folder your devices already sync. It runs on Windows, macOS, Linux, Android and iOS, online or off, because a browser is the only thing it ever needed.
Who else sees this
Nobody. Your Target, Best seen, RA/Dec and notes never leave the file on your own disk. There is no account, no telemetry, no analytics, and no code in the file that opens a network connection, pull the cable and watch it carry on working. How privacy works across the Hobby tools →
Questions people ask
How do I plan which objects to observe on a clear night?
You build the list in advance — target, the season or month it's best placed, and its coordinates in the notes. Then when the forecast turns kind, you're choosing from a menu instead of starting from scratch.
Is my observing list stored in the cloud?
No. The Object Planner is one HTML file that runs offline in your browser. Your list stays on your machine, no account needed, and the file is yours forever.
Can I store RA and Dec coordinates for each target?
Yes — the notes field is made for exactly that. Write the RA/Dec, a finder hint, whatever gets you on target faster in the dark.
Go deeper on Object Planner
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For the household
Fits your knife at weight 1. Nothing here is final, Knife follows Life. Reforging within your tier is free, forever. Add it, drop it, reforge it later; the file stays yours either way.