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#fisheye

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TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️

Fisheye lens views of a large portion of the midnight sky, as seen from the Sacramento mountains of southern New Mexico.

First image is a stack of 100 30-second exposures. The winter Milky Way runs left to right a bit above the middle of the image. Dark dust clouds add texture to the bright star clouds.

Second image is annotated to show the gegenschein/counterglow...which is 180 degrees opposite the sun's position in the sky.

en.wikipedia.org/wiki/Gegensch

Third image is a single exposure, straight off the camera with lots of contrast boost. Red airglow is like a layer of cirrus clouds over the entire sky. (Fortunately, a stack of 100 images tends to smooth over the textured airglow. This is a common challenge during solar maximum.)

en.wikipedia.org/wiki/Airglow

Compare to my recent images using an all-sky 'circular fisheye':
universeodon.com/@KrajciTom/11

First image is a stack of 100 30-second exposures. The winter Milky Way runs left to right a bit above the middle of the image. Dark dust clouds add texture to the bright star clouds.
Second image is annotated to show the gegenschein/counterglow...which is 180 degrees opposite the sun's position in the sky. (Red circle) https://en.wikipedia.org/wiki/Gegenschein The band of zodiacal light is shown by a green line that intersects the Milky Way.
Third image is a single exposure, straight off the camera with lots of contrast boost. Red airglow is like a layer of cirrus clouds over the entire sky. (Fortunately a stack of 100 images tends to smooth over the textured airglow. This is a common challenge during solar maximum.) https://en.wikipedia.org/wiki/Airglow
#NewMexico#Astronomy#Astrophotography
Public
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️

Two fisheye lens views of the entire sky, as seen from the Sacramento mountains of southern New Mexico. (Elevation 9,440 feet)

First image is a stack of 77 30-second exposures. The winter Milky Way runs diagonally across the sky in the lower right portion of the frame. It is rich with texture from dark dust clouds. The zodiacal light stands tall, starting at the horizon at the upper left, and stretches faintly across the sky. It is featureless.

Note the light pollution at the horizon at all azimuths. It has different colors in different azimuths.

Second image (stack of 19 30 second exposures) is taken a few minutes later as the first light of dawn brightens the sky in the east (left). The brightest part of the zodiacal light stands out a little more strongly than in the first image. If you are in a dark sky this 'false dawn' can fool you into thinking that sunrise is coming soon.

First image is a stack of 77 30-second exposures. The winter Milky Way runs diagonally across the sky in the lower right portion of the frame. It is rich with texture from dark dust clouds. The zodiacal light stands tall, starting at the horizon at the upper left, and stretches faintly across the sky. It is featureless.
Second image (stack of 19 30 second exposures) is taken a few minutes later as the first light of dawn brightens the sky in the east (left). The brightest part of the zodiacal light stands out a little more strongly than in the first image. If you are in a dark sky this 'false dawn' can fool you into thinking that sunrise is coming soon.
#NewMexico#Astronomy#Astrophotography
Public
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️

Two fisheye lens views of the entire sky, as seen from the Sacramento mountains of southern New Mexico. (Elevation 9,440 feet.)

First image is a stack of seven 30-second exposures. (Stacking and aligning on the stars...with the huge distortion of a fisheye lens...is problematic.) The winter Milky Way runs diagonally across the sky in the lower right portion of the frame. The zodiacal light stands tall, starting at the horizon at the upper left, and stretches faintly across the sky. Some red skyglow is visible near the left horizon.

Second image is taken a few minutes later as the first light of dawn brightens the sky in the east (left). I did not align on the stars, so they are trailed in this stack of six frames. The nice thing about that is the star images are larger, so it's easier to see their colors...especially the bright stars of the winter constellations.

This is what you can see in a fairly dark sky...texture and structure in the sky at every size and scale. First image is a stack of seven 30-second exposures. (Stacking and aligning on the stars...with the huge distortion of a fisheye lens...is problematic.) The winter Milky Way runs diagonally across the sky in the lower right portion of the frame. The zodiacal light stands tall, starting at the horizon at the upper left, and stretches faintly across the sky. Some red skyglow is visible near the left horizon.
Second image is taken a few minutes later as the first light of dawn brightens the sky in the east (left). I did not align on the stars, so they are trailed in this stack of six frames. The nice thing about that is the star images are larger, so it's easier to see their colors...especially the bright stars of the winter constellations.
#NewMexico#Astronomy#Astrophotography
Public *
TomKrajci 🇺🇦 🏳️‍🌈 🏳️‍⚧️

An all-sky fisheye lens view of the sky over southern New Mexico.

This is unusual weather for us.

Clouds are pushing in from the south because of the slow approach of tropical storm Ileana.

If we're lucky, we'll get some rain from that storm on Monday, but it's still rather iffy in the forecast.

Monsoon in the southwest US this summer has been below average for rainfall. We need all the help we can get.

All-sky fisheye lens view of the sky over southern New Mexico. North is at the top of the frame, south is at the bottom, east is at the left, west is at the right. Clouds from tropical storm Ileana are moving in from the south.
Projected path of tropical storm Ileana over Mexico. Perhaps the storm will push rain up into New Mexico?
Forecast for the mountains of southern New Mexico. Will we actually get rain on Monday? We hope so.
Weather satellite view showing tropical storm Ileana and its plume of clouds extending to the northeast (toward the upper right). The plume is starting to cover the southeast corner of New Mexico.
#NewMexico#Arizona#TropicalStorm
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