Mount Diablo Astronomical Society

Glenn Spiegelman - Nebulae

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My favorite imaging targets are the vast array of Emission and Planetary Nebulae (from the Latin for Cloud) that are 'visible' to my back-yard in Danville, CA.

IC405
IC405

IC405: The Flaming Star Nebula in the constellation Auriga is a very large star forming region of Emission Nebula with a scattering of Reflection Nebula. The bright star in the center of the complex is the powerful star α-Auriga which shines through dust and causes the reflection component you see here as a blue tinge.

This LRGB image has a total integration time of 123 minutes as follows:
Lum: 10 * 90 seconds
Red : 10 * 180 seconds
Green: 10 * 180 seconds
Blue: 10 * 288 seconds

Digital development and alignment in Maxim DL, final color combination and color balance in Adobe Photoshop.

IC434
IC434

IC434: Also known as the Horse Head Nebula. It is one of the most famous and well known examples of a dark nebula; almost invisible to the eye at the telescope. It is located about 1/2 degree south of ζ-Orionis in the long stretch of IC434 which extends for almost a degree south of the star. Much of the illumination in this area must be due to the radiation of Zeta but it has also been suggested that it is actually a collision zone between two cosmic clouds. About halfway along the eastern edge is the dark projection of the Horse Head, sharply outlined against the bright background. The Horse Head itself is a great obscuring cloud of dust and non-luminous gas. The total diameter is about 1 light year. The distance is estimated at 1200-1600 light years.

IC1340
IC1340

IC 1340: the Network Nebula, is in the Eastern portion of the the much larger Super Nova Remnant, "Vail Nebula" in the constellation Cygnus.

This image was taken through a Meade LX200 - 8" at F6.3.

This LRGB image had a duration of 164 minutes:
Lum: 10 * 120 seconds
Red: 10 * 240 seconds
Green: 10 * 240 seconds
Blue: 10 * 384 seconds

Calibration and alignment in MaximDL and final processing and LRGB combine in Adobe Photoshop.

IC 5070
IC 5070

IC 5070: in the constellation Cygnus is also known as the Pelican Nebula

IC 5146
IC 5146

IC 5146: Also known as the Cocoon Nebula, is in the constellation Cygnus.

Total integration time for this LRGB image was just over 5 1/2 hours, and consists of:

Lum: 10 * 240 seconds
Red: 10 * 480 seconds
Green: 10* 480 seconds
Blue: 10 * 768 seconds

Images were combined and digitally processed in Maxim DL, and final processing and JPEG optimization in Adobe Photoshop

NGC 281
NGC 281

NGC 281: An open cluster inside a Nebula in the constellation Cassiopeia.

NGC 1499
NGC 1499

NGC 1499: Also known as the California Nebula, and is found in the Constellation Perseus.

NGC 1579
NGC 1579

NGC 1579: Diffuse nebula in Perseus. This object could make a good substitute for the Trifid Nebula (M20) during the winter time. The emission portion of this gas is glowing red whereas the star with the blue clouds around it are due to scattered light (a reflection nebula).

NGC 2024
NGC 2024

NGC 2024: Also known as the Flame Nebula. The Flame is an emission nebula, which lies just east of the third star in Orion's belt - ζ-Orionis (popular name Alnitak - "the girdle"). This bright star presents a challenge when viewing or imaging the Flame nebula.

NGC 2244
NGC 2244

NGC 2244: Also known as the Rosette Nebula in the Constellation Monoceros

NGC 2392
NGC 2392

NGC 2392: Also known as the Clown Face or the Eskimo Nebula

NGC 6888
NGC 6888

NGC 6888: Also known as the Crescent Nebula or Van Gough's Ear Nebula is in the constellation Cygnus. This nebula was created by Wolf-Rayet star and it is located about 2° SW of β-Cygni.

This RGB image was taken on 6/30/2005, and is comprised of:
Red: 21 * 150 seconds
Green: 21 * 150 seconds
Blue: 21 * 240 seconds

For a total Integration time of 3 hours, 15 minutes. Image capture and Color Combine in MaximDL with final processing in Adobe Photoshop

NGC 6992
NGC 6692

NGC 6992: Also known as the Veil Nebula, East Segment. The entire Veil Nebula is a faint and vast loop spread at the south wing of the swan. It consists of east (NGC6992) and west (NGC6960) segments. They are fine filaments seemingly suspended in the space. The East Side is brighter, and can be seen with binoculars in perfect conditions. This nebula is the remnant of supernova that exploded over ten thousand years ago, and is expanding outward with a velocity of about 100km (62 miles) per second. This nebula has a real size of about 50 light years and a distance of 1300 light years.
Located in the constellation Cygnus at coordinates: RA: 20:56:24, Dec: +31:43, apparent size: 78' x 8' (29.5 x 3 light years)

NGC 7000
NGC 7000

NGC 7000: etter known as the North American Nebula in the constellation Cygnus

NGC 7009
NGC 7009

NGC 7009: Also known as the Saturn Nebula in the constellation Aquarius. This planetary nebula has its name from its appearance, which resembles a faint suggestion of the planet Saturn with rings nearly edge-on (Lord Rosse named it in the 1840s).

NGC 7293
NGC 7293

NGC 7293:  Also known as the Helix Nebula is located in the constellation Aquarius, and is one of the closest of all planetary nebulae: Lying at a distance of perhaps 450 light years, it is the only planetary nebula for which a parallax could be obtained by ground-based observations. It is also one of the largest planetary nebulas known: Its apparent size covers an area of 16 arc minutes diameter, more than half of that of the full moon; it halo extends even further to 28 arc minutes or almost the moon's apparent diameter

NC 7635
NGC 7635

NGC 7635: Also known as the Bubble Nebula in the constellation Cassiopeia.
At the center of the nebula is an 8th magnitude star, and about 6 arc minutes southwest is a brighter star (the brightest star in this image) of magnitude 6.7.

The Bubble nebula is a very rare example of a planetary nebula around an OB star.

This image was taken on August 6, 2004, and is an LRGB Composite with a total integration time of 164 minutes.
Lum: 10 * 120 seconds
Red: - 10 *240 seconds
Green: - 10 * 240 seconds
Blue: - 10 * 360 seconds

Initial alignment and processing in MaximDL, final composition in Adobe Photoshop.

M42 and surrounds
M42 and Surrounds

M42 and surrounds: The top area of nebulosity is NGC 1977 - The Running Man Nebula, followed by M42 and M43, which make up the Orion Nebula. At the bottom of the image is NGC 1999.

Areaoun around Alnitak
Area around Alnitak

Area around Alnitak: Close to ζ-Orionis, you will find NGC 2024 (Flame Nebula) and IC 434 (Horse Head Nebula)