Observation Log
Hobbyweight 1tracker · keeps what you put in
You finally caught the Ring Nebula on a night of good seeing, and by breakfast the details had already gone soft. The Observation Log keeps each session honest: the object, the night, seeing rated 1 to 10, and a notes box for equipment and everything else the sky gave you.
This is not a screenshot. It's the real tool, running right here — go on, put something in it.
Open the demo full-screen: /demos/observation-log.html
What it keeps
- Objectshort text
- Night ofdate
- Seeing 1-10number
- Equipment & notesnotes
Questions people ask
How do amateur astronomers keep an observation log?
One entry per object per night: what you looked at, when, how the seeing was on a 1-to-10 scale, and which scope and eyepiece you used. Over a year it becomes a record of your sky, in your handwriting, so to speak.
Does this astronomy log work offline at a dark-sky site?
Yes, completely. It's a single HTML file running in your browser — no signal required, which is convenient, since the best skies tend to be where the signal isn't. Your log never leaves your device.
What does the seeing rating mean and why track it?
Seeing is how steady the atmosphere is; the log gives you a simple 1-to-10 field for it. Track it and you'll learn which observations to trust and which nights flattered you.
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 later; the file stays yours either way.