Friday, February 23rd, 2018

The hen’s chest


Sadr neighborhood

Way up there in the eastern sky somewhere is a star named Sadr. I can barely make it out through all the light pollution, but I know it’s there, because my trusty telescope Stella dutifully bores a hole for me through the polluted atmosphere so I can peer into outer space. Even better, if I squeeze the incoming photons through a narrow-band hydrogen-alpha filter, I see less light from nearby streetlights and more of the illumination stars are sending my way.

Sadr resides in an interesting celestial neighborhood in our galaxy, the Milky Way. It is surrounded by clouds of nebulosity from the galaxy’s cosmic dust, making a more interesting picture. From Wikipedia (where else?) I learn

Gamma Cygni (γ Cyg, γ Cygni) [designates] a star in the northern constellation Cygnus, forming the intersection of an asterism of five stars called the Northern Cross. It has the traditional name Sadr… , which name comes from the Arabic word صدر şadr, “chest”, the same word which gave rise to the star Schedar (Alpha Cassiopeiae). In the catalogue of stars in the Calendarium of Al Achsasi al Mouakket, this star was designated Sadr al Dedjadjet, (صدرألدجاجة-şadr aldajaaja), which was translated into Latin as Pectus Gallinǣ, meaning the hen’s chest.

Now you know.

This photo represents a 30-minute total exposure. I plan to follow with similar exposures through Oxygen III and Sulfur II filters. The two additional shots will be combined with the hydrogen-alpha exposure to dazzle you with colors that the human eye probably would not see, even if Mr. Sadr was brighter in the sky. I will commission water color artist bro Tom to come up with an appropriate palette. For this he will earn his 15 minutes of fame, which has been a long time coming.

To continue the back story, I have been long convinced that the God of the heavens completed his building of the Universe some 14 billion years ago and has provided us with two instruction manuals; the Holy Bible and Nature itself. To quote a gent even older than I am, “The heavens declare the glory of God, and the sky above proclaims his handiwork” — Psalm. 19:1.

I believe it.



6 Responses to “The hen’s chest”
  1. Tom says:

    After some deep thought I will give you two choices for the color scheme. First, if you want a high contrast keep it simple and try a complimentary of say or blue green and red orange or blue violet and yellow orange. This gives you the strongest contrast. Place the cool colors against the warm ones. If you use red or yellow as the accent you can desaturate the opposite cool colors to put more emphasis on the warm colors.
    If you want a more complicated scheme try a split complimentary. Say a yellow with red violet and blue violet. Also a high contrast possibility. Desaturate the opposite cool colors to put more emphasis on the warm colors.
    You asked for it! let me low if I can add to the confusion. I await the colored version of the hen’s nest.

  2. Linda says:

    Come on dad… desaturate! Do you two bro’s talk the same language? I’m so glad to meet Sadr. Thanks for sharing.

  3. Dave says:

    Desaturate?? And I have been trying to get saturated colors! Sheese! As for Tom and I speaking the same language, the short answer is no. Long answer, too, come to think about it.

  4. Dave says:

    And Tom, you’re no fun (as someone with the initial L keeps telling me). Thanks for adding to the confusion. We may have to lop off a few minutes of your fame.

    Actually, what you said makes a certain amount of sense to me. Not much, but some. You can let me know if it withstands my translation.

  5. Tom says:

    guess that’s what I get for being serious, eh? Just slop on some color and hope! Can’t wait to see it, desaturated or not.

  6. Dave Ayers says:

    Slopping I can handle. Stay tuned.

Speak Your Mind

Tell us what you're thinking...
and oh, if you want a pic to show with your comment, go get a gravatar!