Category: Astronomy

Annular eclipse over the Grand Canyon

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Did you see it? There was an annular eclipse of the sun across the southwest today (20 May 2012). An annular eclipse occurs when the moon’s apparent diameter is just a bit smaller than that of the sun leaving a brilliant ring of fire.

The weather was magnificent with cloudless skies, warm temperatures, and light winds. The first two are common around here in the spring; the latter — not so much.

Although the South Rim of Grand Canyon National Park was not on the center line it was close enough. Radio announcements all weekend indicated that there would be telescopes and free viewing/safety glasses for the public at Grand Canyon NP as well as other parks in the area. It was sure to be crowded and by early afternoon the Park Service was closing roads to some of the most congested viewpoints.

I ended up at Navajo Viewpoint and it eventually filled with many visitors and eclipse viewers. Telescopes and cameras were all lined up near the edge (but not TOO near the edge) of the Grand Canyon. Then we waited — and were rewarded with a spectacular show.

Composite image of the annular eclipse seen over Grand Canyon National Park.
Composite image of the annular eclipse seen over Grand Canyon National Park.

This is a composite of images taken using a 50-mm lens between 1723 and 1929 MST at 3-minute intervals. The background image was taken a few minutes after sunset and shows some of the smoke near the horizon from the many wildfires burning in the southwest.

The setting sun -- stil in partial eclipse -- as it dips behind the North Rim of Grand Canyon National Park.
The setting sun — still in partial eclipse — as it dips behind the North Rim of Grand Canyon National Park.

The middle image (600 mm focal length) captures the setting sun as it dips behind a tree-topped mesa on the North Rim of the Grand Canyon.

Cameras and telescopes line the edge of the South Rim of Grand Canyon awaiting the annular eclipse.
Cameras and telescopes line the edge of the South Rim of Grand Canyon awaiting the annular eclipse.

The bottom image shows some of the cameras and telescopes lined up along the edge of the canyon.

Next: transit of Venus across the face of the sun on 05 June 2012.

Edit: fixed typos.

Moon setting over Cathedral Rock in Sedona

Even though it was full almost two days ago the waning gibbous “Supermoon” (Wikipedia; NASA) was still 98% illuminated this morning. I used “The Photographers Ephemeris” to find the perfect location — as well as a backup site — to get this sequence of images. Good thing, too, since my prime location was gated and locked!

Moon over Cathedral Rock, Sedona, Arizona. (0554 MST 07 May 2012)
Moon over Cathedral Rock, Sedona, Arizona (0554 MST 07 May 2012). First light is just touching the top of the rock.
Moon over Cathedral Rock, Sedona, Arizona. (0604 MST 07 May 2012)
Moon over Cathedral Rock, Sedona, Arizona (0604 MST 07 May 2012). The rock is now fully illuminated by the rising sun.
Moon over Cathedral Rock, Sedona, Arizona. (0611 MST 07 May 2012)
Moon over Cathedral Rock, Sedona, Arizona (0611 MST 07 May 2012).

The first image shows the moon above Cathedral Rock (0554 MST) in Sedona, Arizona. It then slides down and to the right appearing again in the V-shaped notch (0604 MST) and then finally in the lowest portion of the gap (0611 MST). The sky was brightening rapidly so that in the final image the moon is almost overwhelmed by the sky.

Afterwards we hiked up the trail to the saddle in Cathedral Rock — where the moon had set less than an hour earlier.

Bright objects in the night sky — Part V

I expect that this will be my last chance to photograph the Moon with Venus and Jupiter before they move away from each other. The two planets are drawing away from each other each day from their closest point on March 12 and 13.

The Moon and planet Venus as seen in the middle of the afternoon.
The Moon and planet Venus as seen in the middle of the afternoon.

Venus has been bright enough to be visible in the sky during the day IF you know where to look. That’s not easy. But today the crescent moon — which IS easy to see — was very close to Venus. So, find the Moon and find Venus. This image was taken mid afternoon on a beautiful early spring day in northern Arizona.

The Moon, Venus, and Jupiter in the twilight sky over the Kachina Wetlands...with ducks.
The Moon, Venus, and Jupiter in the twilight sky over the Kachina Wetlands…with ducks.

After sunset the triangle of Venus, Jupiter, and Mars put on quite a show over the reflective waters of the Kachina Wetlands near Flagstaff, Arizona. The ducks had just recently alighted on the waters for the evening and their trails through the water are easily visible.

The Moon, Venus, and Jupiter in the twilight sky over the Kachina Wetlands.
The Moon, Venus, and Jupiter in the twilight sky over the Kachina Wetlands.

And as the sky darkened the triplet shone even more brightly above the now quiet water.

Bright objects in the night sky — Part IV

A few nights ago I had an opportunity to take a tour of the telescopes operated by Lowell Observatory at the Anderson Mesa Station. I’ve driven and biked onto the mesa top many times over the years and often wished that I would have an opportunity to tour the telescope domes. Finally!

The 72-inch Perkins Telescope at the Lowell Obervatory Anderson Mesa Station.
The 72-inch Perkins Telescope at the Lowell Obervatory Anderson Mesa Station.

We were taken into the 72-inch Perkins Telescope for a brief visit. There were ongoing experiments and data collection so we were limited in what we could visit. Still, this was a nice, large telescope and worth seeing. This was followed by a longer visit to the smaller 42-inch John Hall Telescope where we were treated to observing the research staff collect photographic images of Comet 49P/Arend-Rigaux.

The 42-inch John Hall Telescope.
The 42-inch John Hall Telescope.

Afterwards, I set up my tripod and camera for yet another image of the conjunction of Venus and Jupiter. The closest approach of the two planets occurred a few days ago and they are now moving apart.

Venus and Jupiter shine brightly above the telescope dome at the Lowell Observatory Anderson Mesa Station.
Venus and Jupiter shine brightly above the telescope dome at the Lowell Observatory Anderson Mesa Station.

In a little over a week the new crescent moon will once again move near the two planets providing another interesting photo opportunity.

Bright objects in the night sky — Part III

Venus and Jupiter continue to shine brightly in the western twilight sky each evening. The two planets have been converging and will be closest on the evenings of March 12 and 13 when they will have an angular separation of only three degrees (about the same as six moon diameters).

 

Conjunction of Jupiter, Venus, and the ISS over the Kachina Wetlands near Flagstaff, Arizona.
Conjunction of Jupiter, Venus, and the ISS over the Kachina Wetlands near Flagstaff, Arizona.

On the evening of 01 March 2012 the International Space Station (ISS) made an evening transit low in the western sky. Its track placed it just below the planetary pair resulting in a great photographic opportunity. Shooting a total of six 30s exposures captured the ISS rising from the low hills to its high point just below the planets then moving into the southwestern sky. The 1st-quarter moon provided more than enough light to brighten up the scenery of the Kachina Wetlands with reflections of the planets visible in the water.