remote astronomy

One Pier Available For Lease

  • July 8, 2017

Great news!  We will have a pier available NOW. Pier rental is $575 per month and includes electric and internet. Contact us for more information. Experience Bortle 1 sky.

AstroImage- NGC 6992, The Rest of the Veil Story – Bob Rieger

  • November 11, 2016
“The last astro image I recently sent was NGC 6960, the Western Veil Nebula.  As you may remember, it is a remnant of a supernova explosion that occurred to a nameless star in the constellation of Cygnus some 3,000 to 6,000 years ago.  The shock waves of gas from the explosion formed a spherical shell moving outwards from the dying star.  While most of the shock wave is invisible to us, several of it’s brighter arcs are detectable by the eye using special filters.  Photographically, the shock waves of oxygen, hydrogen and sulfur are readily detectible.
I mentioned in my last email my next image would be of NGC 6992, the Eastern Veil Nebula.  That image is attached, and while it is similar to NGC 6960, you can see differences in the amount of oxygen (blue) and hydrogen (red).  It is believed the shock waves are relatively thin.  This is what causes the appearance of filaments of gas, since they are only visible when they line up along our line of sight.  The twisting of the filaments are actually undulations in the surface of the spherical shock wave that is moving outwards.
In order to provide a bit of perspective, here is a small graphic from the internet which shows the entire nebula in infrared light, with the major structures indicated.  The approximate center is where the original star explosion occurred:
ngc6992
Now, when you examine my attached image, you can get a sense of the overall size as compared to the relatively small area I am imaging.  The entire nebula is believed to be some 70 light years in diameter, at a distance of almost 1500 light years.  This nebula resides in the next closest arm of our Milky Way Galaxy.
 ngc-6992-eastern-veil
By the way, when you look at the internet photo, and the names of the nebula, you will note a rather curious thing.  It is not a mistake, but can you see it?
Do you see the designations of East and West confused?  Well, they are not- it’s just a matter of reference.  On the surface of the Earth, East and West are defined by meridians of longitude running left or right from the prime meridian.  In the sky, the reference point is is not from the surface of the Earth, but rather an imaginary vantage point infinitely far away where the observer is looking DOWN upon the Earth.  Now you can see the familiar orientation of West and East being left and right, respectively!
Hope you enjoy my image of NGC 6992, the Eastern Veil.”
Bob Rieger

PIER AVAILABLE AUGUST 1st

  • June 8, 2016

Great news!  We will have a pier available on August 1st. Pier rental is $650 per month and includes electric and internet. Contact us for more information. Experience Bortle 1 sky.

Mercury farthest east of setting sun on May 25

  • May 25, 2014

2014-may-25-mercury-jupiter-night-sky-chart
Mercury, the solar system’s innermost planet, orbits the sun inside of Earth’s orbit. Therefore, Mercury always stays close to the sun in Earth’s sky and is often lost in the sun’s glare. But Mercury reaches its greatest elongation – greatest angular distance – east of the sun on May 25, so this world can now be spotted low in the west-northeast as dusk ebbs into darkness. As always, binoculars help out with any Mercury quest.
The planet Jupiter is the first “star” to pop out after sunset. If you’re familiar with the star Regulus, you can draw an imaginary line from Regulus and past Jupiter to locate Mercury near the sunset point on the horizon. (See sky chart below.) Given a clear sky and unobstructed horizon, Mercury could be visible to the unaided eye about 60 to 90 minutes after sunset. If not, try binoculars.

Although Mercury shines more brightly than Regulus does, you might see Regulus first because it’s not as obscured by the glow of evening twilight. What is the ecliptic?

Although Mercury shines more brightly than Regulus does, you might see Regulus first because it’s not as obscured by the glow of evening twilight. What is the ecliptic?

…and don’t forget the morning sky, which features the dazzling planet Venus and a thin waning crescent moon on Monday, May 26.

…and don’t forget the morning sky, which features the dazzling planet Venus and a thin waning crescent moon on Monday, May 26.

Setting times of the sun and Mercury in your sky

At an elongation of 23o Mercury lies far enough east of setting sun to stay out until the end of astronomical twilight (at mid-northern latitudes). By definition, astronomical twilight ends in the evening sky when the sun is 18o below the horizon. For reference, the sun’s diameter equals one-half degree, and your fist at an arm length approximates 10o.

Because Mercury is setting a maximum amount of time after sunset right now, this is your chance to catch Mercury low in the west at late dusk or nightfall. But don’t tarry when seeking this elusive yet surprisingly bright world, for Mercury – even now – follows the sun beneath the horizon around nightfall. At mid-northern latitudes, astronomical twilight ends nearly two hours after sunset, at about the same time that Mercury sets beneath the horizon.

End of nautical twilight and Mercury’s setting time in your sky

We should mention that the Northern Hemisphere enjoys the better view of this particular evening apparition of Mercury. That’s because the ecliptic – the pathway of the planets – hits the horizon at a steeper angle as the sun sets in the Northern Hemisphere sky.

What is the ecliptic?

Mercury stands higher over the horizon at sunset in Northern Hemisphere than at comparable latitudes in the Southern Hemisphere. For instance, at 40o north latitude – the latitude of Philadelphia, Pennsylvania – Mercury’s altitude at sunset is about 19o. In contrast, at 40o south latitude – the latitude of Wanganui, New Zealand – Mercury’s altitude is less than 11o at sunset.

No wonder Mercury sets more than 100 minutes after sunset at mid-northern latitudes but less than 80 minutes after sunset at mid-southern latitudes. The farther north you live, the later that Mercury sets after sunset; and the farther south you live, the sooner.

Although this evening apparition of Mercury favors the Northern Hemisphere, everyone worldwide has a reasonably good chance of catching Mercury after sunset right now. Look for Mercury above the sunset point on the horizon some 60 to 75 minutes after sunset.

Mercury might be visible to the unaided eye for another week or so, but binoculars always help out with your search for Mercury, the solar system’s innermost planet.

Bruce McClure  EarthSky News

Opening of Second Pier-Coming Soon

  • April 20, 2013

We expect to open our second pier for lease in the coming weeks. If you would like to inquire about future availability we would be glad to speak with you. We at SKYPi are committed to providing the best possible service to go along with our Bortle 1 skies and superb seeing. Our seeing monitor will be posted soon. It has been operational for only a week and our average has been just over 1 arc second. Sub arc second seeing has not been uncommon.

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