Hello!
Here a first attempt in generating a quasi-SHO image from a dual-band filter acquisition! (Optolong L-enhance narrowband filter).
It is a total reprocessing of a wonderful region in the constellation Cygnus with a focus on both the Crescent (NGC 6888) and the elusive Soap Bubble (PN G75.5+1.7) nebulae.
I worked in depth on carefully managing all the three different monochrome channels acquired from my OSC-camera (QHY294c) with the purpose
(with respect the RGB full processing) of emphasize all gases belonging to that spectacular region of stellars winds, the latter determining the shape of both nebulae shooted.
I especially had the goal to highlight as much as possible the increadible spherical-shape of the Soap Bubble planetary nebula , that seems to adrift upon the stars studded sky.
In the post-processing phase I tried this time to work only with starless images (and so I also adopted the HDR technique in order to emphiseze regions with a high contrast in luminosity).
Of course being a quasi-SHO composition (missing the true SII acquisition) I used an average formula of the Ha and OIII channels for the SII representation.
What emotions when the Soap Bubble became so evident with respect the RGB processing!
I surely will try the work again a bit on the noise reduction phase, but this time I preferred to maintain the image with not an extremely smoothness
Any comment is much appreciated and I hope you like the present effort!
CS,
Davide.
Comments