In more recent centuries Loughcrew became the seat of a branch of the Norman-Irish Plunkett family, whose most famous member became the martyred St Oliver Plunkett. The family church stands in the grounds of Loughcrew Gardens. With its barren isolated location, Sliabh na Caillí became a critical meeting point throughout the Penal Laws for Roman Catholics. Even though the woods are now gone an excellent example of a Mass Rock can still be seen on the top of Sliabh na Caillí today. The Plunketts were involved in running the Irish Confederacy of the 1640s and were dispossessed in the Cromwellian Settlement of 1652. Their estate at Loughcrew was assigned by Sir William Petty to the Napier Family c.1655. The Napiers are descended from Sir Robert Napier who was Chief Baron of the Exchequer of Ireland in 1593.
Cairnbane East of the Loughcrew Cairns site, County Meath Ireland, is also known as Hag’s Mountain. We are looking south, southwest from the north side toward Cairnbane West. Flowering yellow whin bush is in foreground, white flowering hawthorn trees in distance.
Carnbane East hill is topped by a fine and accessible passage tomb, Cairn T.
On a May afternoon my dear wife, Pam, and I climbed to the summit of in Irish “Sliabh na Caillí” anglicized as “Slieve na Calliagh” translated to the english language as “Hag’s Mountain”, the site of 5000+ year old megalithic monuments. Here you are looking to the northeast with a collapsed tomb to the right foreground. In closeup is a curbstone, one of many laid side to side to form the outer tomb margin. In the middle distance is a hill with additional megalithic ruins, not visible.
Megalithic is an architectural style used throughout the world, between 6,000 and 4,000 years ago in the Neolithic and Bronze Ages. Megalithic ruins are scattered throughout the island and County Meath is especially noted for them.
We stand in Corstown townland, the townlands of Ballinvally is to your left, ahead and to the right is Patrickstown, all in County Meath, Ireland.
Copyright 2023 Michael Stephen Wills All Rights Reserved
These views within the McMath–Pierce solar telescope enclosure were captured during a guided tour of the instrument, April 20, 2005. By way of orientation, the observation room we visited is near the location labeled “4” on the model of the following photograph or the “Observation Room” of the drawing.
We learned each of the sets of mirrors is considered a separate telescope. The first step in designing the new solar telescope was to determine the optimal image scale. Working on the spectra of the solar granules, on the physical structure of the sunspots and their associated magnetic fields, requires a considerable image size. Past experience has shown that the optimal image of the sun should be approximately 0.91 meters. The highlight of our visit to the Main Observation room was meeting with the technician operating the recently developed low-cost adaptive optics system.
Tip-tilt correction and low order wavefront correction is available with a number of portable optical benches. These are primarily used with the Main spectrograph and the Solar Stellar spectrograph on the Main telescope, but due to their compact mounting they could be used with other telescopes and instruments in the facility.
This configuration uses a rapidly deformable mirror to correct distortions introduced by the turbulent atmosphere. Using sensors to measure the degree of image distortion, the adaptive optics system adjusts the shape of the mirror accordingly and converts a blurred image into a clear one. The following image demonstrates the correction. “Low-cost” = $25,000 in 2003 US dollars. Under references is a link to a full description of the device by the creator.
Christopher Keller, Public domain, via Wikimedia Commons
A main area of study in the observatory is the structure of sunspots, which are relatively cold, dark spots on the surface of the Sun created by intense magnetic activity.
Some of the most important discoveries made at McMath-Pierce include the detection of water vapor in the Sun, the measurement of kilogauss magnetic fields (thousands of times stronger than those on Earth) outside sunspots and the detection of a natural maser (like a laser, but with a microwave instead of visible light) in the Martian atmosphere.
Over the years and technological advances, the National Solar Observatory has moved its headquarters from Tucson to Boulder, Colorado. The organization abandoned its solar telescopes at Kitt Peak and in New Mexico for a larger instrument in Hawaii, the Daniel K. Inouye Solar Telescope on the island of Maui, which began operating in 1919.
These views within the McMath–Pierce solar telescope enclosure were captured during a guided tour of the instrument, April 20, 2005. By way of orientation, think of yourself at the location labeled “4” on this model. This is the only large telescope where humans can view the interior and visually experience the light paths “bouncing” between the mirrors.
McMath–Pierce solar telescope has three heliostats mounted on a 110-foot tower adjacent to a slanted enclosure. The 2.03-meter heliostat feeds a 1.61-meter primary mirror, there are 1.07-meter and 0.91-meter primary mirrors fed by a pair of 0.81-meter heliostats. Here we are inside the slanted enclosure, looking up the shaft to the tower mounted heliostats, readily identified as the three circles, the largest at center (3.51 feet in diameter). The smaller (2.66 feet) heliostats named “East” (on left) and “West.”
Built in 1962, the building was designed by American architect Myron Goldsmith and Bangladeshi-American structural engineer Fazlur Rahman Khan. It was the largest solar telescope and the largest unobstructed aperture telescope in the world. It is named after the astronomers Robert Raynolds McMath and Keith Pierce. Painted white to reflect sunlight to reduce heat accumulation, the enclosure is water cooled to prevent convection currents through the column of air within the slanted enclosure, keeping the air as still as possible along the light path between the mirrors.
In the three photographs following, we face the underground portion of the slanted shaft and (what looks to be) the 0.91 meter (2.99 feet) primary concave mirror. I say that because in some of the photographs a beam of light, to the left of the mirror, can be seen travelling further underground, presumably to the largest primary mirror. As there is only one such light beam, I conclude the west heliostat is inactive.
Here we looking up the slanted enclosure. Look carefully at the first photograph, below, to see reflections on the glass partition. The observation platform was separated from the light paths to maintain the stillness of the air column. The two mirrors of the first photograph are the third mirror, reflecting concentrated sunlight from the 0.91 and 1.61-meter primary mirrors into the observatory rooms. The mirror for the 1.07-meter primary is out of sight in foreground, I believe this set of three mirrors (West heliostats, primary and third) was out of service.
The second photograph, on right, is a close up of the third mirror for the largest primary. A foreshortened, perfectly round light disk is clearly visible.
Here we are inside the slanted enclosure, facing the underground portion of the slanted shaft and (what looks to be) the 0.91-meter primary concave mirror. In the lower right corner is the reverse side of the third mirror for the largest primary mirror, the 1.61-meter.
Reference: Wikipedia “McMath–Pierce solar telescope”
Copyright 2022 Michael Stephen Wills All Rights Reserved
A multi-day hatch of small fry around the time of a new moon triggered this Black Skimmers (scientific name: Rynchops niger) feeding behavior surf off Cocoa Beach, Brevard County on Florida’s Atlantic Coast.
Copyright 2022 Michael Stephen Wills All Rights Reserved
The Rincons are one of 42 Sky Mountain islands isolated from each other by the gradual warming and drying climate changes since the last ice age, 10,000 years ago. While this marvelous environment of oak and pine forests only accessible with much effort on foot, it is literally visible from every point of the Tucson valley and million human inhabitants.
Rincon is Spanish for corner, the mountains are called that from their shape enclosing a space on the west, northwest until recently used for ranching and is now falling into use for tract housing. The mountains themselves are reserved as wilderness, parts in the Saguaro National Park and the Coronado National Forest.
In the past 44 years I was lucky enough to visit the Rincon Wilderness interior three times, shouldering different style backpacks onto the mountain, walking different boots. The first, during college the 1970’s, a party of six left from the end of Speedway, up the Douglas Springs trail. The climb was an exercise in desert survival that several friendships did not survive, replace by new friends met on Mica Mountain. I have no photographs from that experience, only memories and the backpack.
Reconnecting with Arizona in 2004, thirty one years after that first experience, I took no chances. My first attempt on Rincon Peak was a success. Risk and effort were reduced, not eliminated by hiring a guide for the four day trip. We made it to Rincon Peak via the Turkey Creek Trail out of Happy Valley, climbing a mountain buttress, views ever widening and lengthening.
These are some photographs from that experience and a landscape photograph of the peak at sunset, taken the following year.
Sego Lilies bloom among a stricken oak and drying grasses on the Turkey Creek trail. This is an overview of the environment, it is the winter rains that trigger the bloom.
We paused while I unpacked my gear to capture Sego Lilies growing along the Turkey Creek Trail.
Deer Head Spring, at the top of Turkey Creek Trail was a moist spot with no accessible water when we reached it April 27, 2004. With the remains of a gallon of water each we needed to press ahead to Heartbreak Ridge and climb into Happy Valley Saddle were, thankfully, the creek was low and full of algae but usable. Here are my first views of Rincon Peak, looking across the aptly named Heartbreak Ridge and Happy Valley Saddle.
The view to south from Rincon Peak. The white rocks at lower right forms a Valley of the Moon wall. San Pedro River valley at the root, Mae West Peaks at left margin, Dragoon Mountains with Cochise Stronghold center. Taken around 12:30 on April 28, 2004 as a thunderstorm approached.
The Rincon Peak view looking south, southwest over the Valley of the Moon to the eastern Tucson Valley and the Sky Islands the Whetstone Mountains (Apache Peak), behind are the Santa Ritas. The works of man are overpowered by sky, rock, distance.
We made a hasty departure in front of the thunderstorm. It was a touch and go decision to attempt the peak that day, we made it with moments to spare.
April 29, 2004 the morning after reaching Rincon Peak I set up the tripod near our Happy Valley Saddle camp to capture Rincon Peak in early morning sunlight.
The day we descended to the X9 Ranch via the Rincon Creek trail. My guide’s grandfather had a homestead at the X9 and his access to the trailhead through private lands opened this route for us. This is a photograph of sunset on Rincon Peak from the X9 ranch. I am looking east from the Rincon (Spanish for corner) made by the massifs Rincon Peak, Mica Mountain and Tanque Verde ridge.
The evening of November 2, 2006 I climbed the Saguaro National Park, East, Tanque Verde trail for about 30 minutes to reach this view of Rincon Peak and waited until just before the sun set behind the Tucson Mountains for this shot. Then hiked back to the car in twilight. In my hurry, I tripped on a stepped turn and dove headfirst into a large prickly pear. It was a very painful experience and I regretted damaging the cactus and the loss of and good hiking shirt. There were large spines in my face and tiny, pesky spines covered my chest and back. The large spines are not barbed and come right out. I needed to visit a physician to remove them.
Copyright 2021 Michael Stephen Wills All Rights Reserved
The Rincons are one of 42 Sky Mountain islands isolated from each other by the gradual warming and drying climate changes since the last ice age, 10,000 years ago. While this marvelous environment of oak and pine forests only accessible with much effort on foot, it is literally visible from every point of the Tucson valley and million human inhabitants.
Rincon is Spanish for corner, the mountains are called that from their shape enclosing a space on the west, northwest until recently used for ranching and is now falling into use for tract housing. The mountains themselves are reserved as wilderness, parts in the Saguaro National Park and the Coronado National Forest.
In the past 44 years I was lucky enough to visit the Rincon Wilderness interior three times, shouldering different style backpacks onto the mountain, walking different boots. The first, during college the 1970’s, a party of six left from the end of Speedway, up the Douglas Springs trail. The climb was an exercise in desert survival that several friendships did not survive, replace by new friends met on Mica Mountain. I have no photographs from that experience, only memories and the backpack.
Reconnecting with Arizona in 2004, thirty one years after that first experience, I took no chances. My first attempt on Rincon Peak was a success. Risk and effort were reduced, not eliminated by hiring a guide for the four day trip. We made it to Rincon Peak via the Turkey Creek Trail out of Happy Valley, climbing a mountain buttress, views ever widening and lengthening.
These are some photographs from that experience and a landscape photograph of the peak at sunset, taken the following year.
Sego Lilies bloom among a stricken oak and drying grasses on the Turkey Creek trail. This is an overview of the environment, it is the winter rains that trigger the bloom.
We paused while I unpacked my gear to capture Sego Lilies growing along the Turkey Creek Trail.
Deer Head Spring, at the top of Turkey Creek Trail was a moist spot with no accessible water when we reached it April 27, 2004. With the remains of a gallon of water each we needed to press ahead to Heartbreak Ridge and climb into Happy Valley Saddle were, thankfully, the creek was low and full of algae but usable. Here are my first views of Rincon Peak, looking across the aptly named Heartbreak Ridge and Happy Valley Saddle.
The view to south from Rincon Peak. The white rocks at lower right forms a Valley of the Moon wall. San Pedro River valley at the root, Mae West Peaks at left margin, Dragoon Mountains with Cochise Stronghold center. Taken around 12:30 on April 28, 2004 as a thunderstorm approached.
The Rincon Peak view looking south, southwest over the Valley of the Moon to the eastern Tucson Valley and the Sky Islands the Whetstone Mountains (Apache Peak), behind are the Santa Ritas. The works of man are overpowered by sky, rock, distance.
We made a hasty departure in front of the thunderstorm. It was a touch and go decision to attempt the peak that day, we made it with moments to spare.
April 29, 2004 the morning after reaching Rincon Peak I set up the tripod near our Happy Valley Saddle camp to capture Rincon Peak in early morning sunlight.
The day we descended to the X9 Ranch via the Rincon Creek trail. My guide’s grandfather had a homestead at the X9 and his access to the trailhead through private lands opened this route for us. This is a photograph of sunset on Rincon Peak from the X9 ranch. I am looking east from the Rincon (Spanish for corner) made by the massifs Rincon Peak, Mica Mountain and Tanque Verde ridge.
The evening of November 2, 2006 I climbed the Saguaro National Park, East, Tanque Verde trail for about 30 minutes to reach this view of Rincon Peak and waited until just before the sun set behind the Tucson Mountains for this shot. Then hiked back to the car in twilight. In my hurry, I tripped on a stepped turn and dove headfirst into a large prickly pear. It was a very painful experience and I regretted damaging the cactus and the loss of and good hiking shirt. There were large spines in my face and tiny, pesky spines covered my chest and back. The large spines are not barbed and come right out. I needed to visit a physician to remove them.
The Rincons are one of 42 Sky Mountain islands isolated from each other by the gradual warming and drying climate changes since the last ice age, 10,000 years ago. While this marvelous environment of oak and pine forests only accessible with much effort on foot, it is literally visible from every point of the Tucson valley and million human inhabitants.
Michael Stephen Wills Photography 
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