SH2-254 to SH-257

An emission nebulae in Orion.

Click on the images for a full scale version.

H-Alpha, OIII, SII, Continuum

SH2-254 to SH2-257
Color mapping:      Red: SII + Continuum      Green: H-Alpha + Continuum      Blue: OIII + Continuum

H-Alpha, OIII, SII, Continuum

SH2-254 to SH2-2573
Color mapping:      Red: H-Alpha + Continuum      Green: OIII + Continuum      Blue: SII + Continuum     

Image data:

FOV: 0.58° x 0.4°
Date: 2019
Location: Pulsnitz, Germany
Instrument: 400mm Newton at f=1520mm
Camera Sensor: Panasonic MN34230
Total exposure times:
H-Alpha (3nm): 1.4 hours
OIII (3nm): 3.2 hours
SII (3nm): 3.5 hours
NIR (as continuum): 0.28 hours
Image processing:
  1. Continuum subtraction
  2. Deconvolution
  3. Color composition
  4. Dynamic range compression
  5. continuum addition
  6. Tonal correction
Only deterministic image processing (no manual retouching) and no saturation enhancement after color composite.