The Astro-Imaging LAB
Barnard 33 - Narrowband
Another image of one of the most popular objects imaged by astroimagers... The Horsehead Nebula/Barnard 33 with Alnitak and the Flame Nebula, but exposed mainly through narrowband filters, but emulating natural colors of the object.
I was planning to combine H-Alpha as red, OIII as green and H-Beta as blue channels to create a natural colour image through CCD narrowband filters, eliminating any light pollution or moon sky-glow in the process.
Unfortunately, the last night when I was able to do any imaging of subs for this object was on the 20th February before it became cloudy every day and night with constant rain, when I managed to get only 3 x 30 minute H-Beta and 4 x 20 minute OIII narrowband subs.
After waiting for a couple of weeks, I figured that I'm not going to get much decent exposure time on Barnard 33 before it become obscured by landmarks so I decided to combine my currently exposed subs.
This image total exposure time was 9 hours and 32 minutes, channels consisting of 15 x 600 second H-Alpha, 4 x 1200 second OIII and 3 x 1800 second H-Beta 7nm narrowband subs with only 25% intensity added from the 14 subs each through red (180s), green (300s) and blue (600s) filters.
Taken through a 80mm Refractor @ f6.25, on a hypertuned CGEM mount with QHY268M camera.
Barnard 33 - Narrowband
Another image of one of the most popular objects imaged by astroimagers... The Horsehead Nebula/Barnard 33 with Alnitak and the Flame Nebula, but exposed mainly through narrowband filters, but emulating natural colors of the object.
I was planning to combine H-Alpha as red, OIII as green and H-Beta as blue channels to create a natural colour image through CCD narrowband filters, eliminating any light pollution or moon sky-glow in the process.
Unfortunately, the last night when I was able to do any imaging of subs for this object was on the 20th February before it became cloudy every day and night with constant rain, when I managed to get only 3 x 30 minute H-Beta and 4 x 20 minute OIII narrowband subs.
After waiting for a couple of weeks, I figured that I'm not going to get much decent exposure time on Barnard 33 before it become obscured by landmarks so I decided to combine my currently exposed subs.
This image total exposure time was 9 hours and 32 minutes, channels consisting of 15 x 600 second H-Alpha, 4 x 1200 second OIII and 3 x 1800 second H-Beta 7nm narrowband subs with only 25% intensity added from the 14 subs each through red (180s), green (300s) and blue (600s) filters.
Taken through a 80mm Refractor @ f6.25, on a hypertuned CGEM mount with QHY268M camera.