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BigHorn Mountains Twilight Portrait

BigHorn Mountains Twilight Portrait
BigHorn Mountains Twilight Portrait

BigHorn Mountains Twilight Portrait

View from up on Ridge one here on ranch. The window to the Big Horns is IFFY this time of year from this far away. My truck/tripod is 130 miles out for this capture off the highest point around the place. The timing on this was mid-Civil Twilight

Full Screen is a good choice for this. Twilight over the BigHorns this night was so obviously gorgeous. I had to resort to a short time exposure to catch it. The timing on this sunset is very late in Civil Twilight.

Civil Twilight after sunset ends about 28 minutes after the sun goes down 8 degrees under the horizon. It’s usually the best time to get those crimson and yellow skies. The yellow is Alpenglow. Atmospheric Ice causes this phenomena caused by refracted light passing through. Only the red wavelengths which have survived through hundreds of miles of atmosphere light the cloud deck.

The long lenses I use crush the perspective of distance. I’m almost always using telephotos to bring in just the BigHorn Mountains filing the whole frame. It takes about a 800 mm long focal length to fill the camera frame side to side with the tallest part of the range. The black ridge at the bottom is 40 miles out. The clouds behind the range are around 200 miles out I would suspect. The distance is hard to put into proper frame. Those 13000 feet high mountains appear smaller than the thumb on my outstretched arm from here.

Location: Bliss Dinosaur Ranch, Wyoming/Montana borderlands (Wyotana)

BigHorn Mountains Twilight Portrait

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Big Horn Layers of Fire

Big Horn Layers of Fire
Big Horn Layers of Fire

Big Horn Layers of Fire

Twilight to me is a night sky in this case, late civil twilight. The 13000 foot high peaks at 130 miles out from my lens. This is a 2 second time exposure and it was very dark out. Once the sun goes down, there is still an hour and a half sky show through the three twilights. You just need a good tripod and time exposures to see the show sometimes. I have photographed many of these from start to finish. This week has been incredible.

Civil Twilight begins about 28 minutes before sunrise or ends 28 minutes after sunset. It is that period from when the sun is about 6 degrees below the horizon. On clear days you can do normal outside activities that require light. That solar elevation angle below the horizon defines each twilight phase. CIvil Twilight is by far the brightest of the three twilights.

Nautical Twilight starts when the sun is 12 degrees below the horizon technically. Both the Horizon AND brighter stars/planets are visible in this twilight. It is the “middle” of the three twilights. At the beginning of Nautical twilight, it’s about one hour to sunrise. Rule of thumb which varies with your position on the globe, is 28 minutes each twilight.

In Astronomical Twilight, If you live in the city, you have probably never noticed astronomic twilight. The are NO shimmers of daylight at the beginning of Astronomic Twilight a full hour and a half before sunrise. . Away from the lights of population centers, we see Astronomic Twilight regularly where there is just a slight greying of the black totally dark sky mid night. It gets as dark here on our ranch in remote northeastern Wyoming as the North Atlantic Ocean according to NASA.

Location: Bliss DInosaur Ranch, Wyoming/Montana borderlands.

Title: Big Horn Layers of Fire

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Twilight Over the BigHorn Mountains

Twilight Over the BigHorn Mountains
Twilight Over the BigHorn Mountains

Twilight Over the BigHorn Mountains is of course a night sky in late civil twilight. The 13000 foot high peaks at 130 miles out from my lens. This is a 2 second time exposure and it was very dark out. Once the sun goes down, there is still an hour and a half sky show through the three twilights. You just need a good tripod and time exposures to see the show sometimes. I have photographed many of these from start to finish. This week has been incredible.

Civil Twilight begins about 28 minutes before sunrise or ends 28 minutes after sunset. It is that period from when the sun is about 6 degrees below the horizon. On clear days you can do normal outside activities that require light. That solar elevation angle below the horizon defines each twilight phase. CIvil Twilight is by far the brightest of the three twilights.

Nautical Twilight starts when the sun is 12 degrees below the horizon technically. Both the Horizon AND brighter stars/planets are visible in this twilight. It is the “middle” of the three twilights. At the beginning of Nautical twilight, it’s about one hour to sunrise. Rule of thumb which varies with your position on the globe, is 28 minutes each twilight.

In Astronomical Twilight, If you live in the city, you have probably never noticed astronomic twilight. The are NO shimmers of daylight at the beginning of Astronomic Twilight a full hour and a half before sunrise. . Away from the lights of population centers, we see Astronomic Twilight regularly where there is just a slight greying of the black totally dark sky mid night. It gets as dark here on our ranch in remote northeastern Wyoming as the North Atlantic Ocean according to NASA.

Location: Bliss Dinosaur Ranch, Wyoming/Montana borderlands

Title: Twilight Over the BigHorn Mountains