IC1805, IC1848 and Double Cluster region in HOO, RGB stars
Mosaic made by 9 panels, with starless master in narrowband, HOO palette, and stars integration in RGB.
Narrowband subframes of 180″, 300″ and 600″, RGB subframes at 60″ exposure.
IC1805, IC1848 and Double Cluster region in SHO, RGB stars
Mosaic made by 9 panels, with starless master in narrowband, SHO palette, and stars integration in RGB.
Narrowband subframes of 180″, 300″ and 600″, RGB subframes at 60″ exposure.
Astrobin:
IC1848 in SHO, stars in RGB
IC1848 in narrowband, with stars in RGB. SHO palette and cropped field to best focusing about Soul Nebula IC1848.
HOO palette and RGB stars
Wider field from original integration, with part of IC1805 on the top left
Astrobin:
IC1805 in SHO, RGB stars
New workflow focused about IC1805 with narrowband and RGB data addiction.
AFter PixInSight normal workflow, parallel for SHO, HOO and RGB integration, I reached the point of star separation from nebuloisty. Starless SHO and HOO files was developed with color masks and curves transofrmation in PixInSight, thus finally cleaned and polished by NoiseXTerminator and BlurXTerminator.
SHO, starless and stars
HOO palette, starless and stars
RGB stars master was simply saved as .tiff.
SHO starless after adjustements and pixel fixing
Starless and stars composition made in Photoshop, after dedicated adjustements, with screen stars layer blending over starless SHO nebula.
Astrobin:
LDN1355 “Helping Hand Nebula” in LRGB
LDN1355 Helping Hand Nebula in LRGB, 600 sec. subframes at -25C by Takahashi FSQ-106ED with CCD Proline FLI PL16083, from Spanish IC Astronomy Observatory, Telescopelive network.
After cosmetic correction of calibrated subframes I realized 2 LRGB integration by PixInSight: the first one by Process > ColorSpaces > LRGB combination, and the second, after integrating RGB masters, by Script > Utilities > LinLRGB operating over L master and RGB just created one.
I thus proceed with a normal post production workflow for each integration: LRGB, LinLRGB, RGB and L master: bg removal, platesolving, Spectrophotometric color calibration, Starmask, Deconvolution manual made, with Bg-mask and PSF obtained by EZdeconvolution, first denoising by EZdenoise, Stretching, 1st Dark Structure Enhancing, Starless and Stars version for each one, 2nd Dark Structures Enhancing just to starless, Color Masking and curves transformation (starless), final denosing and sharpening by NoiseXTerminator and BlurXTerminator (still just starless), .TIFF saving.
I finally rebuilt stars + starless image in Photoshop, applying adjustements to starless and star as separated layers group, melted in Lighten blending mode.
As I wasn’t satisfied nor by LRGB,
neither by LinLRGB results,
expecially because of Luminance and contrast, I thus move for another Photoshop workflow, with RGB starless and RGB stars, respectively associated to L starless and L stars luminance layer group, in luminosity blending mode, with dedicated adjustements and opacities setting.
I found this final postproduction better ther previous results, and thus move to a crop version to better focusing about LDN1355.
Astrobin: https://www.astrobin.com/qb5b5g/D/