The North America Nebula
August 16, 2017
This was surprisingly faint, even with narrowband. I guess that’s the red-zone light pollution. Either way, I’m not too happy with this. I ran my gain higher in order to get shorter exposures and I definitely made the final image noisier. Also dithering would help, but I don’t trust my mount. Will try next time.
This image is another false color, meaning it is not the color your eye would observe. Here, ionized sulfur is assigned as red, hydrogen as green, and oxygen as blue.
The North America Nebula (NGC 7000, left) is named for fairly obvious reasons. I missed the upper left of the nebula when framing this, I sacrificed it for more detail on the Cygnus Wall, the structure along the Pacific coast of Mexico. This region (like that in the upper part of the pelican nebula) is actively forming stars, which in turn burn away the surrounding gas with stellar wind, sculpting beautiful mountains and valleys. The “Pelican” is much harder to find, supposedly the bright star up and right of center is the pelican’s eye, but I can’t find it. The dark rift between the two nebulae is not the lack of gas, in fact just the opposite. This area is dense with unionized gas, blocking out the stars behind it.
Captured on: August 4th and 8th, 2017 (With a huge moon)
Canon 200mm F/2.8L w/ 2x, 400mm F/7.1
ZWO ASI 1600mm-C
Red: ZWO 7nm SII filter(1.25″), 60x180s, -10C, Gain 200, Offset 50
Green: ZWO 7nm Ha filter (1.25″), 40x180s, -10C, Gain 200, Offset 50
Blue: ZWO 7nm OIII filter(1.25″), 60x180s, -10C, Gain 200, Offset 50
Total Aquisition of 8hrs
PS, DSS, PHD2, SGP
Thanks for looking!