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Object name: NGC 1499 - California Nebula   Optics:   TEC 140 Apo-refractor with original field flattener
  Objekt type: Emission nebula   Focal lenght:   980 mm
  Constellation: Perseus   Camera:   FLI ML 16803-65
  Location / Date: Remseck / 30.January 2011   Exposure:   10 x 1200 sec H-alpha / 5 x 1200 sec OIII / 5 x 1200 sec SII / 1 x 300 sec RGB
  Distance: approx. 1000 Lj   Filters:   Baader H-alpha filter 7 nm / OIII-filter 8.5 nm / SII-filter 8 nm
  Apparent dimensions: approx. 160' x 40'   Mount:   10micron GM2000
  Real dimensions: -   Autoguiding:   Off-Axis Guider - SX Lodestar
  Brightness: 6.0 m   Software:   MaxIm DL / Registar / Photoshop CS3
  Position (R.A. / DEC): 04h 03' 18.00" / +36° 25' 18.0"   Image processing:   Tone-Mapping-Method / real color
 
 


E
xplanation:

The California Nebula, NGC 1499 is an emission nebula located in the constellation Perseus.
Unlike to other typical HII nebulaes, there is very little OIII emission but relatively
much emission in SII. With a distance of only approx. 1000 Ly, NGC 1499 is
the nearest HII nebula.


The colors are mapped to real colors:

red = H-alpha + 25% SII
green = OIII
blue = OIII + 15% H-alpha