Objects in the Night Sky–March 2025

April 5, 2025

We have had several opportunities in March for good-to-excellent night sky viewing and astrophotography sessions. High on my list was capturing NGC 1499 (“California Nebula”). It resides in the western sky during March and is located near Pleiades but is actually in the constellation Perseus.

The nearly vertical zodiacal light shares the western sky with the winter Milky Way and are faintly reflected in the waters of Upper Lake Mary near Flagstaff, Arizona.

One drawback to observing it in the spring is that there can be interference from zodiacal light. From Wikipedia,

The zodiacal light is a faint glow of diffuse sunlight scattered by interplanetary dust. It appears in a particularly dark night sky to extend from the Sun’s direction in a roughly triangular shape along the zodiac…

…Since zodiacal light is very faint, it is often outshone and rendered invisible by moonlight or light pollution.

I made several attempts at NGC 1499. The first attempt was about as expected as I didn’t actually know where to point the camera so I used a short telephoto focal length (80mm) with a wide field of view (25.3° x 17.0°). Luckily, I pointed it correctly but unluckily I bumped the focus ring and everything had a soft focus. Okay, not a success but not too bad for a first attempt.

First attempt at NGC 1499 (19 March 2025).

Third attempt at NGC 1499 (24 March 2025).

On my second attempt I used a longer focal length (180mm) which meant a smaller field of view (11.4° x 13.7°). I had very good focus and other camera settings but managed to actually point it at the wrong object. Instead, I photographed NGC 1579 (“Northern Trifid Nebula”). Oops! But the result was still a success–even if not the object I was seeking.

The third try worked out well. I reverted back to a shorter focal length (85mm) and wider field of view (23.9° x 16.0°) because that might give me a pleasing image with the nebula and neighboring stars. This worked out well except for the previously mentioned zodiacal light. The light was present in the field of view so it was necessary to crop the image to remove the bright band.

I actually prefer the first image as it has better color and less lens flare than the second image.

Finally, I shot images of the zodiacal light using an ultra-wide fisheye lens to capture both the foreground of Upper Lake Mary and the stars and planets up through the zenith. NGC 1499 and NGC 1579 are located to the right of Pleiades but are too small to be visible in this wide view.

The nearly vertical zodiacal light shares the western sky with the winter Milky Way. Annotated to show Pleiades, Jupiter, and Mars. NGC 1499 and NGC 1579 are located to the right of Pleiades.

I have recently started using Siril for my astrophotography processing and have been generally pleased with the results.

Trail Running in Sedona-II

April 2, 2025

As noted in the previous post we had a lot of snow in Flagstaff during the first half of March. That meant if we wanted to do any trail running it had to be elsewhere. And, of course, that means Sedona.

On 22 March the group run was Hangover Trail loop (Munds Wagon Trail, Hangover Trail, Cow Pies Trail).

A brief respite from the near-continuous climbing on the Hangover Trail in Sedona, Arizona.

An expansive view of the Red Rocks of Sedona near the intersection of the Cow Pies and Hangover Trails.

The run up Wet Beaver Creek on 29 March was the final Sedona run of the season; we return to running in Flagstaff now that the snow is gone (well, it could return).

This is the turnaround spot on the Wet Beaver Creek Trail. Weather permitting, a few runners make the plunge into the deep pool.

A narrow ledge on a steep sandstone cliff along the Wet Beaver Creek trail.

So long, Sedona trail runs!

Edit: Fixed typo.

Aurora Borealis Visible from Northern Arizona

April 25, 2023

Aurora borealis on 23 April 2023 as seen from northern Arizona.

The aurora borealis that occurred Sunday night (23 April 2023) was an impressive event. The storm parameters* were all indicative of a major event so it was worth the effort to drive to a nearby dark (or at least reasonably dark) location and try to get some aurora photos.

I assumed that the aurora, if visible from northern Arizona, would be low on the northern horizon so I wanted a location without city lights to my north. The best location would have been the South Rim of Grand Canyon looking over the North Rim but clouds were plentiful in that region. So I headed south from Flagstaff and ended up on Anderson Mesa which has many good viewing locations.

Upon arrival I looked to the north but saw nothing with the unaided eye. A quick photo test, however, revealed that the aurora was in progress and visible through the clouds that were to the north. I took photos from about 2045 until 2330. The aurora was at its best from 2100 to 2145. It was much weaker and very faint after that time although still visible. At its peak, the auroral colors extended upwards 30–40 degrees in the sky!

I tried to see the aurora with the unaided eye but was never able to see it. I think that was because there was some light pollution from Flagstaff (yeah, it’s a Dark Sky city but it puts out more stray light with each passing year) and lights reflecting off the low clouds that were present to the north.

Time-lapse of aurora from 2053–2228 MST 23 April 2023.

But the camera had no difficulty capturing the subtle colors. I was shooting with a Nikon D750 and a Tamron 17–35mm wide angle lens set at 17mm, aperture was f/2.8, exposure was 15 seconds, and ISO 3200. I was using an intervalometer set to take a photo every minute. The camera was also set to do LENR (long exposure noise reduction) so that the actual time the camera was active was 30 seconds out of each minute. This gave me a chance to quickly review images after each shot was taken and that was useful. On the other hand, taking exposures without LENR and shooting, for example, every 15 seconds would have resulted in a much smoother time lapse. Good stuff to know for the next time we get an aurora event this far south!

*I was using SpaceweatherLive.com to monitor storm parameters.

Arizona Monsoon Clouds — July 2018

August 6, 2018

The North American Monsoon arrived in northern Arizona during the first week of July—which is an average start date. Within just a few days, we quickly transitioned from Extreme Fire Danger to High—and within a week or two—to Moderate.

Summer monsoon season is my second storm chase season—the first is in late spring across the High Plains. Second season is more about lightning, clouds with dramatic scenery, and colors at sunset. This July has been a bit more challenging than other seasons but still successful.

Here are some photographs of storms and storm-related activity during July 2018.

Early stage Cumulonimbus

A pair of developing cumulonimbus as seen from Kachina Wetlands.

Cumulonimbus over Hart Prairie.

Outflow boundaries and arcus clouds

Gust front and arcus clouds advance across Wupatki National Monument.

Gust front and arcus clouds continue to advance across Wupatki National Monument.

This complex of storms was moving westward across Wupatki National Monument. I had originally planned to photograph the system from the Doney Mtn. Picnic Area but the system arrived at that location before I did. So I retreated back to US-89 and the entrance to the Monument. Both of these images are panoramas that span the northeast through south. The San Francisco Peaks can be seen at the far right of both images.

Rainbows (and maybe a tornado?)

As convection approached a rainbow developed and I was busy trying to reset the camera to capture the full bow. Only later, when examing the images, did I notice what might be a vortex bisecting the rainbow. Because I did not see it in real time I cannot say whether there was any rotation. It may just be a random bit of cloud debris.

Lightning

The best part of the thunderstorm season is trying to capture lightning. It’s more than just getting a photograph of lightning—it’s important to get lightning in an interesting location.

Lightning over the Painted Desert as seen from South Rim of Grand Canyon.

A composite of four images showing multiple lightning strikes on the San Francisco Peaks. These storms dropped almost 6 inches of rain in under 3 hours.

Menacing thunderstorms

Sometimes I chase storms—other times they chase me. We were mountain biking on Observatory Mesa when this thunderstorm developed and enveloped the San Francisco Peaks. It was definitely time to turn around.

A thunderstorms envelopes the San Francisco Peaks.

Sunset after the storm

And, of course, sunset after the storms can be pretty amazing,

Sunset over Grand Canyon as seen from Lipan Point.

A distant thunderstorm is backlit by the setting sun at Grand Canyon.

Late afternoon sun briefly lights up Cathedral Rock in Sedona.

The setting sun lights up the clouds as shadows race up the face of Cathedral Rock.

Reflections

Reflections in pools of water can produce interesting images. Several days of heavy rain resulted in ponds of water at Crescent Moon Picnic Area.

The setting sun illuminates Cathedral Rock which is reflected in a small pond.

Rainfall amounts

As is typical, rainfall amounts can vary widely over even just a few miles. Here is a map showing the rain gauge amounts for July on the east side of the San Francisco Peaks southward through Flagstaff and beyond. Amounts range from 2.5 to 14.5 inches.

August continues to bring thunderstorms, lightning, and flooding to northern Arizona.

Monsoon thunderstorms continue across Northern Arizona

August 4, 2017

The North American Monsoon continues across the Southwest bringing thunderstorms almost every day to northern Arizona. Rainfall amounts across much of the state have been well above average with Flagstaff receiving 4.5″ compared to a normal of 2.6″ in the month of July,

Of course, all this storminess brings opportunities for photographing interesting skies, lightning, and sunsets.

I was heading towards the South Rim of Grand Canyon when I decided that Wupatki National Monument might be more interesting. Although there wasn’t much in the way of lightning there was a nice sunset with a thunderstorm in the distance.

Sunset at Citadel Pueblo in Wupatki National Monument.

Another day brought a great sunset with beams of light illuminating the inner canyon.

Sunset from Lipan Point, Grand Canyon National Park.

I found myself in Sedona a few nights later hoping for lightning at sunset. The lightning was there but clouds to the west blocked the light of the setting sun. This spectacular bolt of anvil lightning traveled horizontally for a great distance before terminating above Cathedral Rock.

Lightning over Cathedral Rock, Sedona, Arizona.

Early afternoon cumulus development near Marshall Lake on Anderson Mesa resulted in this small cumulus cloud producing a very photogenic shadow.

And, later that afternoon, we found ourselves at Lower Lake Mary watching another cumulus cloud develop to our east and reflected in the water.

Cumulus cloud reflected in Lower Lake Mary.

I’ve been trying to capture evening thunderstorms and lightning (image) over Grand Canyon with a crescent moon illuminating the interior the canyon. Not very easy to do. I was able to get the moonlit canyon. And there was lightning but it was over 100 km away and resulted in teeny, tiny bolts in the phots. Well, I’ll just keep trying.

A crescent moon illuminated the interior of Grand Canyon. (120 second exposure, f/4, ISO 200, 16mm)

Flagstaff Altitudes

Tag: Arizona