by Ann » Sat Feb 19, 2011 6:44 am
I want to thank Vicent Peris (OAUV), Jack Harvey (SSRO) and Juan Conejero (PixInsight) for their splendid and gorgeous portrait of the NGC 6914 region. Apart from the marvellous interplay between blue reflection nebulosity and red emission nebulosity (and some dust-orangish nebulosity), the picture shows wonderfully intricate details in the dust structure. Apart from "bubbles" and "walls", there is the sort of "combed hair" structure that is so obvious in the Pleiades nebulosity, and which shows the effect of magnetism on the dust.
The picture of the airplane cutting the Moon in half is very striking. But the Lady in the Moon keeps smiling!
Nuclearcat, your MiIlky Way and Venus picture is very beautiful! I particularly enjoy the vivid star colors, which make it easier to identify the stars and the constellations.
Céline, you really show us the problem with light pollution in a city like Paris. But your images of Paris softly illuminated by orangish light have a dreamy quality, like impressionist paintings.
paolo pinciaroli, I like both your images, particularly the NGC 7129 one. It is full of fascinating details about star formation.
Jaime Fernández, I can't quite make head or tail of your NGC 410 image. Is it a narrowband image or an RGB? It looks like a narrowband image, but the stars are nicely multicolored, and many of them are really blue, the way they would only be in an RGB image. Many of the details in the nebulosity show up so well that it may take a narrowband image to make them look like that. It's certainly a very nice "combination" of a narrowband and an RGB image (if that is what it is).
Fred Herrmann, I'm fascinated by your three galaxies and their incredibly different colors! But you have a point there, certainly! M74 is an unusually blue galaxy, with a color index of around 0.5. It is a gorgeous face-on symmetrical spiral with a lot of star formation. NGC 891, on the other hand, has a color index of close to 0.9, which is quite red for a spiral galaxy. But that has a lot to do with the fact that NGC 891 is one of the few galaxies that we see exactly edge on, so that it is strongly reddened by its prominent dust lane. NGC 2683 is a relatively reddish galaxy too, with a color index similar to that of NGC 891, but in the case of NGC 2683 we see its elegant "saucer-shaped" yellow bulge without any thick dust in front of it.
Ann
I want to thank Vicent Peris (OAUV), Jack Harvey (SSRO) and Juan Conejero (PixInsight) for their splendid and gorgeous portrait of the NGC 6914 region. Apart from the marvellous interplay between blue reflection nebulosity and red emission nebulosity (and some dust-orangish nebulosity), the picture shows wonderfully intricate details in the dust structure. Apart from "bubbles" and "walls", there is the sort of "combed hair" structure that is so obvious in the Pleiades nebulosity, and which shows the effect of magnetism on the dust.
The picture of the airplane cutting the Moon in half is very striking. But the Lady in the Moon keeps smiling!
Nuclearcat, your MiIlky Way and Venus picture is very beautiful! I particularly enjoy the vivid star colors, which make it easier to identify the stars and the constellations.
Céline, you really show us the problem with light pollution in a city like Paris. But your images of Paris softly illuminated by orangish light have a dreamy quality, like impressionist paintings.
paolo pinciaroli, I like both your images, particularly the NGC 7129 one. It is full of fascinating details about star formation.
Jaime Fernández, I can't quite make head or tail of your NGC 410 image. Is it a narrowband image or an RGB? It looks like a narrowband image, but the stars are nicely multicolored, and many of them are really blue, the way they would only be in an RGB image. Many of the details in the nebulosity show up so well that it may take a narrowband image to make them look like that. It's certainly a very nice "combination" of a narrowband and an RGB image (if that is what it is).
Fred Herrmann, I'm fascinated by your three galaxies and their incredibly different colors! But you have a point there, certainly! M74 is an unusually blue galaxy, with a color index of around 0.5. It is a gorgeous face-on symmetrical spiral with a lot of star formation. NGC 891, on the other hand, has a color index of close to 0.9, which is quite red for a spiral galaxy. But that has a lot to do with the fact that NGC 891 is one of the few galaxies that we see [i]exactly[/i] edge on, so that it is strongly reddened by its prominent dust lane. NGC 2683 is a relatively reddish galaxy too, with a color index similar to that of NGC 891, but in the case of NGC 2683 we see its elegant "saucer-shaped" yellow bulge without any thick dust in front of it.
Ann