Sample gallery entry
California Nebula
A narrowband study of the long, wind-shaped emission front in Perseus.
- Object
- NGC 1499
- Captured
- Published
✦ Press and hold for 1:1
This is a demonstration record. The structured acquisition, equipment, and sky values are internally coherent examples designed to show the detailed mono/narrowband content model; they are not asserted as the real capture metadata for this photograph.
Integration
| Channel | Frames | Exposure | Duration | Capture |
|---|---|---|---|---|
| Ha | 26 | 300s | 2h 10m | December 6, 2025 |
| SII | 20 | 300s | 1h 40m | December 7, 2025 |
| OIII | 20 | 300s | 1h 40m | December 8, 2025 |
| Total integration | 5h 30m | |||
- Channel
- Ha
- Frames
- 26
- Exposure
- 300s
- Duration
- 2h 10m
- Capture
- December 6, 2025
- Channel
- SII
- Frames
- 20
- Exposure
- 300s
- Duration
- 1h 40m
- Capture
- December 7, 2025
- Channel
- OIII
- Frames
- 20
- Exposure
- 300s
- Duration
- 1h 40m
- Capture
- December 8, 2025
Total integration5h 30m
Target & sky
- Object / designation
- NGC 1499
- Constellation
- Perseus
- Right ascension
- 04h 03m
- Declination
- +36° 25′
- Field of view
- 3.6° × 2.4°
- Image scale
- 2.1 arcsec/pixel
- Position angle
- 88°
- Palette
- SHO
- Imaging site
- Sample dark-sky site
- Bortle class
- Class 4
Equipment
- Telescope / OTA
- Sample 110 mm apochromatic refractor
- Camera
- Sample cooled monochrome camera
- Mount
- Sample harmonic equatorial mount
- Filters
- 3 nm H-alpha, 3 nm OIII, 3 nm SII
- Flattener
- Sample field flattener
- Effective focal length
- 620 mm
- Effective focal ratio
- f/5.6
- Filter wheel
- Sample 7-position electronic filter wheel
- Focuser
- Sample electronic focuser
- Flat panel
- Sample electroluminescent flat panel
Software
- acquisition
- Sample capture sequencer
- calibration and integration
- Sample stacking application
- finishing
- Sample image editor
- emission nebula
- Perseus
- narrowband
- SHO