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Showing posts with label California. Show all posts
Showing posts with label California. Show all posts

Thursday, October 20, 2022

Joshua Tree National Park Night Landscape

 Continue previous posts about my trip to  Joshua Tree National Park. 


Canon EOS Ra, EF16-35mm f/2.8L II USM Lens, f/2.8, ISO 25600, 3 sec, Panorama

Three Sisters and Milky Way Joshua Tree National Park

The park is located far from any major cities, which means that the night sky is incredibly dark and clear. On a clear night, visitors can see up to 15,000 stars, as well as the Milky Way and other celestial objects. The park even offers astronomy programs and events throughout the year.

Canon EOS Ra, EF16-35mm f/2.8L II USM Lens, f/2.8, ISO 25600, 3 sec, Panorama

Milky Way Joshua Tree National Park

Joshua Tree National Park is a popular destination for outdoor enthusiasts, nature lovers, and photographers alike. One of the most unique and rewarding photography experiences in the park is astrophotography. With its clear skies and minimal light pollution, Joshua Tree is the perfect place to capture stunning images of the night sky.

Canon EOS Ra, EF16-35mm f/2.8L II USM Lens, f/2.8, ISO 25600, 3 sec

Night Landscape Joshua Tree National Park

Canon EOS Ra, EF16-35mm f/2.8L II USM Lens, f/2.8, ISO 25600, 3 sec

Night Sky Joshua Tree National Park

Canon EOS Ra, EF16-35mm f/2.8L II USM Lens, f/2.8, ISO 25600, 3 sec, Panorama

Joshua Tree and Milky Way

The Joshua tree is a member of the Agave family and is a type of yucca plant. It has a distinctive, spiky appearance, with thick, twisting branches that reach upwards of 40 feet tall. The tree's trunk is usually short and thick, and it has green, sword-shaped leaves that grow in clusters at the ends of its branches.

Canon EOS Ra, EF16-35mm f/2.8L II USM Lens, f/2.8, ISO 25600, 3 sec, Panorama

Sky and Earth Joshua Tree National Park


The Joshua tree is native to the Mojave Desert, which spans parts of California, Nevada, Arizona, and Utah. It is particularly well-adapted to the harsh desert environment, with long, deep roots that allow it to survive in dry, sandy soils. The tree can also tolerate extreme temperatures, from freezing winter nights to scorching summer days.

The Joshua tree is a unique and fascinating plant that is an important symbol of the Mojave Desert. Its distinctive appearance and cultural significance make it a beloved icon of the American West.

 

Tuesday, June 10, 2014

Golden Gate Bridge on Astronomy.com

Golden Gate Bridge Photo on Astronomy.com

Golden Gate Bridge Photo on Astronomy.com - battle with the Light pollution
 Night Landscape Golden Gate Bridge Astronomy.com - astronomy gallery Cosmic Creations

Wednesday, May 28, 2014

Removing Light pollution Astrophotography Urban Astronomy

The moon and the stars no longer come to the farm. The farmer has exchanged his birthright in them for the wattage of his all-night sun. His children will never know the blessed dark of night.

 — Leslie Peltier in his autobiography

Comparison of original image and final one after removing of the light pollution – night photo of Golden Gate Bridge, San Francisco, California.

Light pollution Astrophotography Urban Astronomy

Photoshop instruction:

Step1: Select the Layers panel and then  duplicate the layer
Step 2: Filter -> Noise -> Median… (about 50 px)
Step 3: Filter-> Blue -> Gaussian Blue… (about 30px)
Step 4: Select original layer
Step 5: Image -> Apply image (Blending: Subtract; Offset: 40)
Step 6: Delete the duplicate layer

See for example video in my other post Comet 103P/Hartley 2 from New York City

Note, that Astronomy Tools has more sophisticated methods to remove light pollution, or you can do some variations of such methods (it depends from size of you original image). You also can apply it only for part of original image.

The other way to remove light pollution is using multiple images, see for example my other post M42 Orion Nebula using iOptron SkyTracker in NYC