|Observatory||Nebulae||Galaxies||Moon and Stars||Buy Astronomy Photographs||Differential Flexure – Read This||AP1200 Mount||Planalyzer||Family home page|
Welcome to the Dodd/Kurylo family backyard observatory near Mineral, Virginia USA, about halfway between Richmond, the state capital, and Charlottesville, home of Thomas Jefferson. Here you will find some of our photographs of the night sky, plus pictures of our former observatory and telescope and imaging equipment. Enjoy your visit!
|Please have a look at our photographs of nebulae, galaxies, star clusters, and the moon.|
|Nebulae||Galaxies||Stars and Moon|
|visitors since December 16, 2009|
This Clear Sky Chart is for the new house and observatory we built in 2010 about 20 miles away.
Have a look at the 8'x12' roll-off roof observatory we built. You'll also see the telescope, the imaging guide scope, the observatory computer and how we control it remotely, the computer's illuminated keyboard and cold-weather heater, and how we attach equipment to the telescope pier. There's also an extensive write-up on eliminating differential flexure from the imaging equipment for better-quality photos.
On June 22, 2004 we visited the Lowell Observatory in Flagstaff, Arizona, and spent some time looking through the 24" Clark refractor.
In 1894 Percival Lowell, a wealthy Bostonian, set up his own observatory in Flagstaff, and on July 23, 1896, he installed the 24" objective lens onto a 32-foot long tube and viewed the dark Arizona sky. You can learn more about the Lowell Observatory and its telescopes at www.lowell.edu/.
The f/16 refractor weighs six tons (2-ton tube, 1-ton counterweights, 3-ton "other movable"); the German equatorial mount weighs another seven tons. To aim the telescope, the observer uses the "Armstrong method" – shove it around by hand. Once aimed, clutches are engaged and a clock drive tracks the target.
When we visited, the Observatory staff had some difficulty finding targets, and later decided the "clock" (dial) that displays the right ascension needed adjustment. Views though the scope were bright and crisp, and we could detect some color in M51, the Whirpool Galaxy.
This photo shows the rear of the Clark 24" telescope. The controls are, roughly clockwise from the left:
Interestingly, the same techniques used to process astronomy images dramatically improved this shot. Taken with a digital point-and-shoot camera having a puny built-in flash, parts of the telescope close to the camera were correctly exposed, but the objective end was not. Worse, the observatory dome was completely lost in darkness. However, application of levels and curves in Photoshop revealed the hidden details, as you can see here.