NGC 281 · Emission nebula · Cassiopeia
bok globules
Askar FRA400ZWO ASI533MC Pro9.7 hBortle 4
Description
Demo picture: NASA, ESA, and The Hubble Heritage Team (STScI/AURA). Acknowledgment: P. McCullough (STScI) (ESA/Hubble, CC BY 4.0, https://esahubble.org/images/opo0613a/).
Session
- Total integration
- 9 h 42 min
- Sky darkness
- Bortle 4
- Dates
- 21 Oct 2026 – 23 Oct 20263 nights
- TelescopeAskar FRA400
- CameraZWO ASI533MC Pro
- Optics400 mm f/5.6 · 72 mm aperture
- MountSky-Watcher HEQ5 Pro · Equatorial
| Filter | Exposure | Frames | Total (h:mm) |
|---|---|---|---|
| Optolong L-eXtremedual-band | 180 s | 194 | 9:42 |
Processing
- Tools
- PixInsight, NoiseXTerminator
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