Tagged: nebula - Adam Lundie - Eatons Hill Observatory

Tagged: nebula

IC4603 and IC4604 Showing Rho Ophiuchi Color Transition thumbnail
Inside the Rho Ophiuchi cloud complex live the star clusters IC4604 (left) and IC4603 (right). Heading towards the bottom of the image shows the transition from blue reflection nebulae to red emission nebulae. Interspersed are dark absorption nebulae, blocking the light from the stars behind them.

NGC 2736 - The Pencil Nebula thumbnail
NGC 2736, known as the Pencil Nebula is a part of the supernova remnants from the Vela pulsar, 815 light years away.

Seagull Nebula thumbnail
The Seagull Nebula a region of nebulosity that lies 1820 light years away, along the border between the constellations Monoceros and Canis Major. It includes the neighboring regions of star clusters, dust clouds and reflection nebulae centered around IC 2177.

The Flame and Horsehead Nebulae thumbnail
Adjacent to the bright blue supergiant star Alnitak shines the ionised hydrogen of the Flame and Horsehead nebulae.

Narrowband Helix Nebula thumbnail
I've already done the Helix Nebula in natural colour, so I've imaged it again in narrowband. Lots of H-alpha and Oxygen-III, but barely any Sulfur-II.

On the Shoreline of the Lagoon thumbnail
Next to the Lagoon Nebula, there lies the often overlooked collection of absorption, reflection and emission nebulae: NGC 6559, IC 1274, IC 1275, IC 4684, IC 4685, Barnard 303, LDN 227, LDN 213, and planetary nebula PN M 1-41.

Trifid Nebula in HaLRGB thumbnail
Almost everyone has a go at imaging the Trifid nebula, which is composed of 3 different type of nebulae; emission, reflection, and absorption. When I noticed some faint red glow in the background, I decided to try integrating some long hydrogen emission line frames to see if I could get any structure out of it. I'm quite happy with the resulting background structures!

Caldwell 68 and Globular Cluster NGC6723 thumbnail
Less than 500 light-years away and blocking light from more distant, background stars in the Milky Way, the densest part of the dust cloud of Caldwell 68 is about 8 light-years long. At its tip is a group of reflection nebulae cataloged as NGC 6726, 6727, 6729, and IC 4812. A characteristic blue color is produced as light from hot stars is reflected by the cosmic dust.

Astronomy as Art - The Many Faces of Narrowband thumbnail
Narrowband images are rarely presented as true color light. When imaging in narrowband, colors are assigned to each channel based on the specific emission lines captured. One of the most common choices is the SHO Hubble Pallet, but the choices for mixing colors are endless. Here are 9 examples of how an image of a planetary nebula may be colored.

Revisiting the Lagoon Nebula with a new telescope. thumbnail
I was lucky enough to snag a second hand 900mm refractor at a good price. I needed a bright target to test it with. The Lagoon Nebula is a giant interstellar cloud around 4077 light years away, classified as an emission nebula and as an H II region.

NGC6357 in Narrowband thumbnail
NGC 6357 is a diffuse nebula in the constellation Scorpius. The nebula contains many proto-stars shielded by dark disks of gas, and young stars wrapped in expanding gases. It is also known as the Lobster Nebula. Presented is a narrowband SHO photograph in the Hubble Space Telescope palette.

First Narrowband, Difficult Subject: Planetary Nebula Sh2-313 thumbnail
For my first foray into narrowband imaging, I have chosen a very dim & difficult target: planetary nebula Sh2-313, also known as Abell 35 and PK 303+40.1

New Mount, New Guiding Optics, and a Test Shot of the Horsehead Nebula thumbnail
After switching from a Celestron CGEM DX to a Skywatcher EQ8 Pro, and from off-axis guiding to on-axis guiding I am very happy with the results. This is a 25 minute test shot of the Horsehead Nebula.

Gum 15 / RCW 32 Hydrogen Emission Nebula thumbnail
Gum 15 is a cloud of hydrogen gas 3,000 light-years from Earth. It is shaped by aggressive winds flowing from the stars within and around it.

Cone Nebula NGC2264 thumbnail
The cone's shape comes from a dark absorption nebula consisting of cold molecular hydrogen and dust in front of a faint emission nebula containing hydrogen ionized by the brightest star of NGC 2264. The faint nebula is approximately seven light-years long and is 2,700 light-years away from Earth.

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