Astro-Images | Globulars-Galaxies-Nurseries

I enjoy creating a color image from three grayscale images. The post linked here will explain how to create color astronomical images. Visit the gallery of my previous Astro-Images at this link.


NGC 104

Also known as 47 Tucanae, this object in the skies of the southern hemisphere is the second largest and brightest globular cluster of stars. It is nearly 17,000 light years distant and contains millions of stars of many interesting types. The Hubble space telescope was used to study the cluster in 2000 by watching 35,000 stars for 8 days expecting to find some extra-solar planets. It found none. The image below is of one quadrant of the cluster.

There are two kinds of star clusters. There are open clusters and globular clusters. Open clusters are loose groupings that have fewer stars and can be seen through. Globulars are so dense with stars you cannot see through their center.


From original grayscales | Hubble Legacy Archive | J. Ruebush


NGC 253

Sculptor Galaxy, aka Silver Coin, or Silver Dollar Galaxy, is in a period of intense star formation. It was discovered by Caroline Herschel in 1783. Sculptor is one of the brightest galaxies in the skies of the northern hemisphere. Research suggests there is a 5 million solar mass black hole at the center which is more massive than the one in our Milky Way galaxy center.


From original grayscales | Hubble Legacy Archive | J. Ruebush


NGC 628

This spiral galaxy is a fine example in the constellation Pisces of the northern hemisphere. It is about 32 million light-years from Earth. It is not bright and is difficult for amateur astronomers to observe. It is estimated to be made up of about 100 billion stars. Darker lanes of dust are visible throughout. The crossed lines are imaging artifacts.


From original grayscales | Hubble Legacy Archive | J. Ruebush


NGC 604

This emission nebula region is inside the Triangulum Galaxy in the skies of the northern hemisphere. The nebula was discovered by William Herschel on September 11, 1784. It is an estimated distance of 2.7 million light-years from Earth. If this object was the same distance as the Orion Nebula, it would outshine Venus. The glowing clouds of gas are ionized by a cluster of about 200 massive stars at the center.


From original grayscales | Hubble Legacy Archive | J. Ruebush


16 thoughts on “Astro-Images | Globulars-Galaxies-Nurseries

  1. From what I read I am not surprised that the Hubble found no extra-solar planets because it’s not optimized for that job. Kepler has found that planets are common in our galaxy, but it works by analyzing the change in light when they pass in front of their home stars. Am I right?

    Liked by 1 person

  2. The images are beautiful. I can see why you enjoy working with them.

    Your post reminded me of the guys who created Dragonfly, an array of Canon telephoto lenses coated with a propriety film, that they used to find diffuse galaxies. You probably know about it, but the Nautilus article’s a good one.

    Liked by 1 person

  3. Went outside tonight and looked at the Orion nebula with my birding scope. Nowhere as great as the images here, but still: my first nebula! The Andromeda nebula was already too low and hidden behind trees, Jupiter was not high enough yet and also still poking its light intermittently through the branches. Thank you for motivating me to have a look.

    Liked by 2 people

    • That is great! I often look at the Orion nebula. It is a beauty. Good choice on your first.

      Jupiter and Saturn are also favorites. Mars will be getting closer and larger as the weeks go by.

      Enjoy and clear skies to you.


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