LBN 174 in Cygnus - RGB enhanced with Ha and OIII

LBN 174 in HOO (via Foraxx)+RGB

The above image is RGB overlaid on an HOO image done in PixInsight using the Foraxx script. The RGB overlay was done in Photoshop using Lighten Blend Mode.

Here's the pure RGB image.

LBN 174 RGB


LBN 174
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This region is right next to (and overlaps) my image of LBN 182 / WR 134 seen here: https://www.astrofoto.ca/stuartheggie/ccd_photos/LBN_182_HOO+RGB_AP155_G4_Aug2024.html

Notably, the Tulip Nebula is at the bottom.
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Camera: Moravian G4 w Astrodon Gen II LRGB filters
Scope: Astro-Physics AP155EDF w 4" FF
Mount: SB Paramount MX
Guiding: SBIG ST402ME on Borg 60 guidescope
14/14/14 x 10min each for RGB
26 x 20min H-Alpha; 25x20min OIII
Total exposure: 24 hours !!!
Lucknow, Ontario, Canada
Aug 2024
Images captured with TheSkyX
Session orchestrated by CCD-Commander
Calibration and processing of the RGB and Ha and OIII in PixInsight as follows:
RGB: SPCC, BlurX, NoiseX, Gradient, Curves, HistogramTransform
Ha and OIII: BlurX, NoiseX, StarX, Curves and HT and LHE
Ha / OIII combine with their respective stars done via the Foraxx script in PI

Photoshop processing:
Split channels: Added the Starless Ha to Red at 100% and Blue at 20% using Lighten Blend mode. Added the starless OIII to Green and Blue using Lighten at 50% then Selective Colour and Curves adjustments.
The HOO image from PI was also used. I layered the RGB over that using Lighten and some subsequent adjustment layers.
Small tweaks and small noise reduction then Save-for-Web

Click on the images to see them 2x enlarged.

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