The Astro-Imaging LAB
The Trifid Nebula - M20 (HaO3Hb)
Trifid nebula, aka M20 or NGC 6514 is a popular and bright nebula about 4300 light years away in the constellation Sagittarius.
This image was an experiment with the aim to use 7nm narrowband filters to create a natural color looking image.
The difference between conventional narrowband imaging (using SII, Ha and OIII filters), I captured a few hours of subs through a Hydrogen beta CCD filter instead of SII, and combined the narrowband channels in the order Ha, OIII & Hb as RGB.
Imaged through a 8" SCT at f6.3 using a QHY268M camera, for a total exposure time of 9 hours and 5 minutes.
The Trifid Nebula - M20 (HaO3Hb)
Trifid nebula, aka M20 or NGC 6514 is a popular and bright nebula about 4300 light years away in the constellation Sagittarius.
This image was an experiment with the aim to use 7nm narrowband filters to create a natural color looking image.
The difference between conventional narrowband imaging (using SII, Ha and OIII filters), I captured a few hours of subs through a Hydrogen beta CCD filter instead of SII, and combined the narrowband channels in the order Ha, OIII & Hb as RGB.
Imaged through a 8" SCT at f6.3 using a QHY268M camera, for a total exposure time of 9 hours and 5 minutes.