1. The short version
- One-shot color (OSC): one camera, color in every frame, no filter wheel. Choose it if you
want results fast, image from light-polluted skies (with a dual-band filter), or have limited
imaging nights.
- Mono + filters: a filter wheel and LRGB/narrowband filters; more light per pixel and the best
narrowband results. Choose it if you have the time, budget, and patience and want maximum
control and depth.
2. What you're really trading
| OSC | Mono + filters | |
|---|---|---|
| Up-front cost | Lower (one camera) | Higher (camera + wheel + filters) |
| Time per finished target | Less | More (sequential filters) |
| Narrowband quality | Good (dual-band) | Best (per-line) |
| Workflow complexity | Lower | Higher |
| Light-pollution handling | Good with dual-band | Excellent with narrowband |
3. How to decide
- Few clear nights / want images now / portable: OSC.
- Plenty of nights, narrowband ambitions, want the deepest data: mono.
- Unsure: start OSC; it teaches the whole workflow with fewer variables, and a mono rig is a
clean later upgrade.
For the underlying why — quantum efficiency, the Bayer matrix, per-channel SNR — read the
conceptual comparison: mono vs one-shot color, explained.
4. Budget note (confirm current models)
OSC: one cooled color camera. Mono: cooled mono camera + filter wheel + at least Ha/OIII/SII or LRGB
— budget for the whole chain, not just the body. See also choosing filters.
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Deeper background: mono vs color ·
camera fundamentals: choosing a camera.