Tagged: Nebula - Adam Lundie - Eatons Hill Observatory

Tagged: Nebula

Caldwell 68 and Globular Cluster NGC6723 thumbnail
26-Jun-2016
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
16-Jun-2016
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
10-Jun-2016
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
07-Jun-2016
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
10-May-2016
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
27-Feb-2016
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
22-Jan-2016
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
13-Jan-2016
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.

Luminance vs H-alpha Filters thumbnail
07-Jan-2016
A simple image showing a comparison of visible spectrum and emission line filters in stacked images of the Cone Nebula.

The Unusually Shaped Red Rectangle Nebula - HD44179 thumbnail
14-Dec-2015
The unusual shape of the Red Rectangle is likely due to a thick dust torus which pinches the otherwise spherical outflow into tip-touching cone shapes. Because we view the torus edge-on, the boundary edges of the cone shapes seem to form an X. The distinct rungs suggest the outflow occurs in fits and starts.

Animation of Lagoon Nebula Reprocessing Stages thumbnail
11-Dec-2015
Often I like to see how an image is processed from start to finished. Presented in this animation are the main processing steps in sequence from my reprocessed image of the Lagoon Nebula.

Lagoon Nebula Reprocessed thumbnail
03-Dec-2015
Cloudy nights and full moons gave me a chance to have another look at one of my first deep sky photographs. The first image taken through my telescope that made me say "wow". I decided to try reprocessing the original data with the skills I've learned in the past few months.

Horsehead Nebula in Hydrogen Alpha thumbnail
11-Nov-2015
I decided to take advantage of the only clear night for over a week to play with some new toys: an Astronomik 6nm Hα filter, and a Starlight Xpress adaptive optics unit. After learning how to calibrate and use the AO, I settled on the Horsehead Nebula as my target.

Animation of Helix Nebula Processing Stages thumbnail
07-Oct-2015
Often I like to see how an image is processed from start to finished. Presented in this animation are the main processing steps in sequence from my image of the Helix Nebula

Helix Nebula NGC7293 thumbnail
06-Oct-2015
The Helix Nebula, also known as The Helix, NGC 7293, is a large planetary nebula located in the constellation Aquarius, 695 light years away.

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