New 'Scope

Got my telescope set up today. Hurrah! It was easy to put together and seems to be a great beginner telescope. I can't wait to try it out.

As I write this, seeing conditions are not good. Cloudy with a 30% chance of precipitation so no testing the telescope tonight.

It's good to be back and I promise to update more often.

Toodles!

I'm Back!

Been MIA for the past few months but I've not abandoned my blog. Been working through some health issues these past months most recent being a bad back. Anyway......

Santa is bringing me a telescope. Nothing spectacular just one of those Bresser Skylux refractors that Lidl sells most every year at this time. Santa wanted to get me a much more better telescope but I told him I needed something I could handle (bad back, you know) and not too complicated - although that German equatorial mount may give me probs until I get the hang of it. Plus, with the crummy weather we have here I cannot for the life of me justify more £'s for an instrument I'll not be able to use more than a few times per year. I'm really looking forward to doing some active observing.

Happy Holidays!

~Z~

Leo

The brightest star of this constellation, alpha Leo, called Regulus (meaning: the little king), is a blue-white star (spectral type B7 V) of 1.35 mag. When viewed with binoculars or small telescopes a wide companion of 8th mag is revealed.
At the tip of the lion's tail the beautiful blue-white main sequence star beta Leo, Denebola is located. Viewed through a telescope beta Leo seems to have an orange companion. But actually the two stars are far away from each other.
Another optical double is tau Leo; the 7th mag companion of this orange 5th mag star can be seen in binoculars.
The binary gamma Leo, called Algieba (the lion's mane), is a magnificent pair, which components consists of a orange-red giant of 2.6 mag brightness and a yellow giant with 3.8 mag. A small telescope is sufficient to split gamma Leo into the single stars. Using binoculars a unrelated 5th mag star, 40 Leo, can be seen next to them.
The binary omega Leo (a 7390) is a very difficult object to resolve. You will at least need a scope with 250mm aperture. The two stars revolve each other with a period of 117 years.
With very low power 54 Leo can easily be resolved into a pair of 4.5 mag and 6.3 mag.
Between eta Leo and gamma Leo the double a 7704 can be found; but to resolve its components into single stars (both are about 7.5 mag) telescopes of at least 100mm aperture are required.
Zeta Leo is an optical triple star of 3.44 mag. Using binoculars this stars seems to have two companions of 6th mag, but they are not physically related together.
The red giant R Leo is a long period variable star. Its brightness varies from mag 4.4 to mag 11.6 (the Bright Stars Catalog gives an average of 6th mag) with a period of about 313 days. It is located in the Lion's foreleg.
For Leo is located far away enough from the dust and the star clouds of the Milky Way the farther away galaxies became visible. There are some interesting galaxies in this region, but they are not easy objects for small telescopes. The three galaxies M65, M66 and NGC 3628 form a conspicuous triple.
The other two Messier objects, M95 and M96 are two fainter spiral galaxies. For more information and observing hints please follow the links to the Messier database.
There is a large number of meteor showers associated with this constellation. The most famous are the Leonids. This shower radiates from the region of gamma Leo and can be seen form November 14-20; the maximum can be observed on November 17th. Although the hourly rate from 10 to 15 meteor seems to be small there is a cycle of about 33 years with an enhanced activity. The next spectacular storm is predicted to take place in 1999.
The shower of the Alpha Leonids was first confirmed by Radio Meteor Project. The duration of this shower cover the period from January 13th to February 13th.
From February 14th to April 25th the Beta Leonids are active. The maximum takes place around March 20th.
Nearly at the same time - from February 2nd to March 19th - the Delta Leonids can be observed. The maximum of the activity peaks at February 22nd.
A rather weak shower are the Gamma Leonids, which are active from August 14th to September 12th with a maximum occuring on August 25th.
The meteor shower of the Rho Leonids seems to be non-existent; yet it has been discovered by radio studies in the 1960's. It seems to be "active" around March 14-15th.
The Sigma Leonids are another storm of doubt. Only one observation has been made.
Detailed information for all meteor showers can be found in Gary Kronk's database about meteor showers.

Source: Seds

Lunar Eclipse 2007

What a gorgeous sight! Went outside around 21:40 to set up my little telescope and already La Luna was changing colour. The sky was crystal clear with minimal turbulence. I kept the scope on the moon and when not looking at the eclipse I admired the Pleiades, Taurus and Orion. The view was good in my 10x50 bins as well.

I hope everyone else had as good a view and I can't wait to read about what other bloggers have to say about Lunar Eclipse 2007.

Aurigia!

The yellow giant alpha Aur, called Capella, is the 6th brightest star in the sky (0.08 mag). It is also a spectroscopic binary consisting of a G5III and a G0III. They revolve each other every 104 days.
Menkalinen, beta Aur, is also a spectroscopic binary. Within just four days the stars complete their revolution much faster than those of alpha Aur. Since they are eclipsing each other the brightness of beta Aur seems to vary.
The eclipsing binary epsilon Aur has an extraordinary long period; every 27.1 years the brightness varies from 3.0 mag down to 3.8 mag as the brighter component is then eclipsed by the darker companion. This eclipse lasts a full year (the last eclipse took place in 1983). Calulations show that the dark component of epsilon Aur has about 10 -12 solar masses. Because of its small size it is a good candidate for a black hole; unfortunately this conflicts with the observed lost of brightness during the eclipse. According to studies of Wilson and Cameron the solution is a ring of obscuring material which surrounds the black hole. (There is still doubt that the companion is a black hole; a star which a 10 times smaller brightness would fit the model, too.)
Another eclipsing binary is zeta Aur; a K4 bright giant and a B8 main sequence star revolve each other every 2 2/3 years.
The double omega Aur can be viewed with small telescopes; it consists of a 5th mag and a 8th mag companion.
Telescopes with an aperture of at least 100mm and a high magnification are required to split the tight double theta Aur. An A0psi star of 2.62 mag is accompanied by a star of 7th mag.
The planetary nebula NGC(*) 2149 (the asterisk indicates that this object can be found in the NGC supplementary catalogs of J.L.E. Dreyer) appears as a small oval ring of 10th mag.
The diffuse nebula I 405 is also called Flaming Star.
I 410 consists of a cluster with an nebulosity attached.
There a several open clusters in this constellations.
About 60 members belong to M36. Its a good object for the use of binoculars. A beautiful group of stars is M38 showing an oval shape. The richest of these three Messier objects is M37. It contains about 150 stars with magnitudes of 12.5 and brighter and about 500 in total. Detailed information about all three Messier objects can be found in the Messier database.
The meteor shower of the Aurigids is generally observable between January, 31st, and February, 23rd. This shower is known for its bright fireballs.
From August, 25th, till September 6th, the shower of the Alpha Aurigids is active. Although the annual maximum is about 9 meteors, outbursts of up to 30 were observed in 1935 and 1986.

Source: Seds

Snow!

My little Yorkie loves it. We got at least three inches and she looked like a little pink snow-plow.

**Sigh** So much happiness and love in such a little package.

Orion: Part Two

A constellation, which is the head of a constellation family, located in the equatorial region of the sky and belongs certainly to the most famous constellations. It extends from RA=4h 40m to RA=6h 20m and DECL=+23 degrees to DECL=+8 degrees.

In some ways the central part of this constellation reminds on a oblique sand-glass. In wintertime Orion is a magnificent constellation which can easily be found by the the three stars forming a line building the belt of the Hunter. The belt stars point towards Sirius, the brightest star in the constellation of the Larger Dog, Canis Major, situated SE of Orion.
From his belt there hangs a well defined deggar, which is known for one of the most famous nebulas in the sky: The Large Orion Nebula (M42).
Orion lies close enough to the Milky Way to be interesting enough to be swept even with low-power telescopes or binoculars.
Additionally to the data given above there is a skychart to locate the stars and objects.

Stars and objects

The shoulder star alpha Ori, Betelgeuse, is a variable red giant; its brightness varies from 0.4 mag to 1.3 mag with no set period. It belong to the 20 brightest stars in the sky. During it pulsations the diameter of the star varies from 300 to 400 times the diameter of the sun.
The leg of the hunter, beta Ori, Rigel (arab.: the foot), is a blue-white giant of 0.08 mag. This makes it the sixth brightest star in the sky and the brightest in the constellation Orion. With medium sized telescopes it is possible to distinguish the companion of Rigel, a 7th mag star (smaller telescopes may fail to reveal the companion because of the glare of Rigel).
This constellation offers a great number of binaries and multiple stars:
For binoculars and smaller telescopes the following stars are of interest:

delta Ori, Mintaka (arab.: upper end of the girdle), a blue-white star of 2.2 mag with a 7th mag companion.

iota Ori, a 3rd mag and a 7th mag star forming an unequal double; in the same field the wider double

Struve 747 can be found - a pair of a 5th mag and a 6th mag star.

lamba Ori, a tight pair of 4th and 6th mag stars.

sigma Ori is a terrific multiple star; in binoculars this blue-white star of 4 mag and a 7th mag companion can be resolved; using a small telescope two closer companions of 7th mag and 10th mag are revealed. These stars are grouped in a way that they look like a planet with moons.

If the resolution is not too high in the same telescopic field as sigma Ori the triple star Struve 761 can be seen. It consists of a triangle of 8th mag and 9th mag stars. Together with sigma Ori this triple star gives a delightfully rich grouping.

NGC 1981, a little cluster of 10 stars including the binary Struve 750, a pair of a 6th mag and a 8th mag star.

The multiple star theta1 Ori, the northern star of the deggar of the Hunter is also called the Trapezium; it is located in the heart of the Orion nebula. This group of stars has been formed from the gas of the nebula, which now glows in their light. Small telecopes (about 2-inch and higher) show four stars, ranging from 5th mag to 8th mag, which form a rectangular figure. Scopes with an aperture of about 100 mm show two more stars of 11th mag in this group.
Next to it lies theta2 Ori, a duo of a 5th and a 6th mag star.
For resolving the tight double of zeta Ori (Alnitak) in its consisting parts, a bright star of 2.02 mag and a 4th mag companion, scopes with an apertur of at least 75mm and a high resolution are required. Further more there is a wider companion of 10th mag.
Eta Ori is a difficult pair. Scopes with an aperture of 100 mm and higher are necessary to split it into its 4th mag and 5th mag stars.
The constellation Orion became most famous for its nebula. The Messier database has detailed information about The Large Orion Nebula M 42 and M 43, the DeMairan nebula, which is a part of the Orion Nebula.
Around October 21 each year the famous Orionid meteor shower reaches its peak. Coming from the the border to the constellation gemini as much as 20 meteors per hour can be seen. More information about this meteor shower and the Chi Orionids, which are active around the beginning of december can be found in the meteor shower calendar by Gary Kronk. (Readers in the US might use the original site of Gary Kronk).

Mythological Background:

According to greek mythology Orion died being stung by a scorpion. He is set such in the sky that he sets in the west while his slayer, the Scorpius raises in the east.
Followed by his two dogs he is now fighting the bull Taurus.
According to Secrets of the Night Sky (Bob Berman, William Morrow &Co, 1995) the ancient Sumerians saw in this star pattern a sheep. The name Betelgeuse literally means "the armpit"; in case of the Sumerians it meant "the armpit of the sheep."

Source: http://www.seds.org/

Orion

Here's something Hubble reported on last year. I just can't get enough of this picture.

*****

In one of the most detailed astronomical images ever produced, NASA's Hubble Space Telescope captured an unprecedented look at the Orion Nebula. This turbulent star formation region is one of astronomy's most dramatic and photogenic celestial objects. More than 3,000 stars of various sizes appear in this image. Some of them have never been seen in visible light. These stars reside in a dramatic dust-and-gas landscape of plateaus, mountains, and valleys that are reminiscent of the Grand Canyon. The Orion Nebula is a picture book of star formation, from the massive, young stars that are shaping the nebula to the pillars of dense gas that may be the homes of budding stars.

Source: The Hubble Site

Template Change

The old template was not working for me. I converted to blogger beta but chose to use the original blogger template format and tried a few tweaks....that didn't work. I really liked the look of the old template and it was so easy to maintain but sometimes the text spilt out over the post box limit. So, I went looking for something more suitable before the blog got any bigger and I think this will work. Fortunately, I didn't lose any of my comments.