Astroimager Daniel B. Phillips, featured in Astronomy‘s September issue, has produced a lot more images than we could show in the magazine. Here’s a selection of some of his best.
The Flaming Star Nebula (IC 405) in Auriga
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. Phillips acquired eight 30-minute exposures through a Hydrogen-alpha (H-alpha) filter and combined them with three 10-minute red, three 10-minute green, and three 16-minute blue exposures. This image was processed with Maxim DL, Registar, and Photoshop, as were all others on this gallery.
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. Phillips acquired eight 30-minute exposures through a Hydrogen-alpha (H-alpha) filter and combined them with three 10-minute red, three 10-minute green, and three 16-minute blue exposures. This image was processed with Maxim DL, Registar, and Photoshop, as were all others on this gallery.
Gum 1 Nebula (IC 2177) in Monoceros
8-inch Takahashi MT-200 Newtonian reflector at f/4.8, SBIG ST-10XME CCD camera, Astrodon filters. This image combines a 1.5-hour H-alpha exposure with a 10-minute exposures through clear, red, green, and blue filters.
8-inch Takahashi MT-200 Newtonian reflector at f/4.8, SBIG ST-10XME CCD camera, Astrodon filters. This image combines a 1.5-hour H-alpha exposure with a 10-minute exposures through clear, red, green, and blue filters.
Spiral galaxy M101 in Ursa Major
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera, LRGB image. Phillips combined nine 5-minute unfiltered luminance exposures with three 5-minute red, three 5-minute green, and three 8-minute blue exposures.
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera, LRGB image. Phillips combined nine 5-minute unfiltered luminance exposures with three 5-minute red, three 5-minute green, and three 8-minute blue exposures.
The Dumbbell Nebula (M27) in Vulpecula
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. To create this image, Phillips combined three 20-minute H-alpha, three 5-minute green, and three 8-minute blue exposures.
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. To create this image, Phillips combined three 20-minute H-alpha, three 5-minute green, and three 8-minute blue exposures.
Emission nebula NGC 6357 in Scorpius
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. This image combines a 2-hour H-alpha exposure with a 40-minute green and a 1-hour blue exposure.
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. This image combines a 2-hour H-alpha exposure with a 40-minute green and a 1-hour blue exposure.
North America Nebula (NGC 7000) in Cygnus — “Gulf” region
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. Phillips combined two 20-minute exposures through an H-alpha filter with three 5-minute green and three 8-minute blue exposures.
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. Phillips combined two 20-minute exposures through an H-alpha filter with three 5-minute green and three 8-minute blue exposures.
Emission/reflection nebulae complex NGC 6914 in Cygnus
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. To produce this image, Phillips combined four 30-minute H-alpha exposures with four 10-minute green and four 16-minute blue exposures.
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. To produce this image, Phillips combined four 30-minute H-alpha exposures with four 10-minute green and four 16-minute blue exposures.
Emission nebula Sharpless 2-155 in Cepheus
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. To create this image, Phillips combined a 3-hour H-alpha exposure with a 1-hour red, a 1-hour green, and a 1.5-hour blue exposure.
4-inch Takahashi FSQ 106 apochromatic refractor at f/5.3, SBIG ST-10XME CCD camera. To create this image, Phillips combined a 3-hour H-alpha exposure with a 1-hour red, a 1-hour green, and a 1.5-hour blue exposure.