NGC1491 aka Sh2-206 - Emission Nebula in Perseus

Sh2-206 / ngc1491

The brightest part of the above photo is ngc1491 which is embedded in the larger nebulosity known as Sh2-206 (Sharpless 206). This is an RGB photo where H-Alpha data was added to the Red at 100% and to the Blue at 20%. OIII was added to the Green and Blue, both at 50%. All blends using Lighten mode.

Below is the RGB data only:

ngc1491 / Sh2-206

Above is the pure RGB data. Below is the pure NB image made up as HOO (Hydrogen as Red., Oxygen as Blue and Green).

ngc1491 / Sh2-206
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Above is the pure Narrowband image done as HOO (Hydrogen as Red, Oxygen as Green and Blue).

Below is a typical NB+RGB combine where I've layered the RGB over the HOO image, using Lighten blend mode in PS to recover stars with proper colour and to smooth out the background.

ngc1491 / Sh2-206

Above is the HOO image with the RGB added on top of it to recover the stars' proper colours.

Scope: Planewave 12.5" CDK
Camera: Apogee U16M w Astrondon Gen II RGB
Mount: Paramount ME (MKS5000 upgrade)
Guided w ST-402 and Astrodon MMOAG
Acquired using CCD-Commander and TheSkyX
13/12/12 x 10min RGB, 15x20min OIII, 31x20min H-alpha
Processing in PixInsight
Assembly of final versions in PS CC 2023

Click on the image to see it resized to fit your browser.

Lucknow, Ontario
Feb 2023

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