The Tsar Canon, inside the Kremlin, Moscow, Russia, Europe

Chateau Frontenac, Quebec City, Province of Quebec, Canada, North America

Beverly Canon Gardens, Beverly Hills, Los Angeles, California, United States of America, North America

Beverly Canon Gardens, Beverly Hills, Los Angeles, California, United States of America, North America

Ovo Castle fortifications with canons at Castel dell Ovo islet fortress and city view at the Gulf of Napoli, Naples, Campania, Italy, Europe

Buda Castle canon at bastion in winter with melting snow around, Budapest, Hungary, Europe

Jacob's Barracks, Old Town, UNESCO World Heritage Site, Riga, Latvia, Europe

Canon atop Santa Lucia Hill with Santiago city center in background, Santiago Metropolitan Region, Chile, South America

Canon atop Santa Lucia Hill with Santiago city center in background, Santiago Metropolitan Region, Chile, South America

View of one of the two noon guns at Lion Battery on Signal Hill in Cape Town. The daily noon gun is Cape Town’s oldest living tradition and the two cannons used are the oldest guns in daily use in the world. They have marked the midday hour in the mother city in this distinctive, albeit noisy manner since early 1806. The cannons were cast in Britain in 1794 and still bear the royal crest of King George the third. The firing of the cannon was originally to give ships in the bay a means of re-setting their clocks accurately.

Chief Petty Officer Dudley Malgas using a wooden ram rod to push the charge into the muzzle of the noon gun cannon in Cape Town. The daily noon gun is Cape Town’s oldest living tradition and the two cannons used are the oldest guns in daily use in the world. They have marked the midday hour in the mother city in this distinctive, albeit noisy manner since early 1806. The cannons were cast in Britain in 1794 and still bear the royal crest of King George the third. The firing of the cannon was originally to give ships in the bay a means of re-setting their clocks accurately.

Chief Petty Officer Dudley Malgas of the South African Navy posing alongside the noon gun cannon in Cape Town. CPO Malgas has been in charge of firing the canon since 1995. The daily noon gun is Cape Town’s oldest living tradition and the two cannons used are the oldest guns in daily use in the world. They have marked the midday hour in the mother city in this distinctive, albeit noisy manner since early 1806. The cannons were cast in Britain in 1794 and still bear the royal crest of King George the third. The firing of the cannon was originally to give ships in the bay a means of re-setting their clocks accurately.

The noon gun firing in Cape Town. The daily noon gun is Cape Town’s oldest living tradition and the two cannons used are the oldest guns in daily use in the world. They have marked the midday hour in the mother city in this distinctive, albeit noisy manner since early 1806. The cannons were cast in Britain in 1794 and still bear the royal crest of King George the third. The firing of the cannon was originally to give ships in the bay a means of re-setting their clocks accurately.

Main Street, Canon City, Colorado, United States of America, North America

A telescopic closeup of Comet Lovejoy (C/2014 Q2) on January 19, 2015. I shot this from near Silver City, New Mexico, using a TMB 92mm apo refractor at f/4.4 and using a Canon 6D at ISO 1600 for a stack of 4 x 5 minute exposures. The ion tail is primarily from a single exposure to minimize blurring from the comet's motion relative to the stars. The rest of the image is from the stacked combination to minimize noise.

Comet Lovejoy (C/2104 Q2) on the night of Dec. 27/28, 2014, as it was approaching the globular cluster M79 at upper right, in Lepus. This is a stack of 5 x 3 minute exposures at ISO 2500 with the Canon 5D MkII and TMB 92mm refractor at f/4.4. Taken from near Silver City, New Mexico.

Canon City, Royal Gorge, Haengebruecke, Colorado, USA, North America, America

Canon City, Royal Gorge, Arkansas River, Rocky Mountains, Colorado, USA, North America, America

Old canon aimed in the direction of Cerro Santa Lucia Park and modern high-rises, Santiago de Chile, Chile, South America

Cathedrale Notre-Dame, Lausanne Cathedral, former episcopal church of the diocese of Lausanne, today main Protestant church of the city of Lausanne, Canon Vaud, Lake Geneva, Switzerland, Europe

Duernstein, religious foundation and church steeple, Wachau, Lower Austria, Austria

Passau Lower Bavaria Germany from the southern tower of the cathedral to Domplatz with canon's houses and green market

City Palace of the Maharajah, Jaipur, Rajasthan, India

Cannon on Castle of Sao Jorge, Lisbon, Portugal