Showing posts with label Night Sky. Show all posts
Showing posts with label Night Sky. Show all posts

Perseids in Rocky Mountain National Park

It's really fun to be outside at night under the stars, especially when skies are dark, and the Perseids come out to play!

This year's Perseids meteor show was hyped up to be unusually good, with a closer approach of comet Swift-Tuttle's tail debris passing through Earth's orbit.

We went to Walden, Colorado in 2013 to observe and photograph the Perseids, but this year stayed close to home. The sky in Rocky Mountain National Park isn't as dark as Walden, but once the moon set, it was dark enough to get a good show.

At about 11:30pm on Aug 11, I drove up Trail Ridge Road, stopping at Many Parks Curve, Rainbow Curve, Forest Canyon Overlook, and Milner Pass before turning around to head home and get some sleep.

As always, click on an image for a larger version.

View from Many Parks Curve, looking east towards Estes Park and the plains. Deer Mountain center, YMCA far right

Here are some of the night shots I got during my outing.


Looking northwest from Many Parks Curve

Even with the bright moonlight, you could still see Andromeda (top center in above photo).

From Many Parks Curve. YMCA of the Rockies at lower left

The moon was illuminating the clouds as the passed overhead going east. I went west from here. Rainbow Curve was very crowded, so I drove on up the road, climbing higher and deeper into the park.

At the Forest Canyon Overlook, I found several cars in the parking lot, with a couple sitting in lawn chairs near their car. I decided to stop and walk out to the overlook. The moon was almost bright enough that I didn't need my headlamp. When I got to the end of the paved path, I found I had it all to myself!

Me and my moonlight shadow (bottom right) near the Forest Canyon Overlook

A meteor streaks by at far right center of frame

Looking east from Forest Canyon; Longs Peak with moon shadows, too!

After I bit I went on down the road, finding Rock Cut to be too busy, so I drove on to the Lava Cliffs overlook. It was busy too, but I want to be here as the moon set.


Another meteor at left

Finally, the moon went down and began to get a lot darker, making the Milky "pop" quite a bit more.


My car with the Milky Way over it

Meteor at left; Ypsilon, Chiquita, Chapin peaks at far right
Some of the people at the Lava Cliffs parking were walking around with their headlamps, so I decided to move on. I skipped the Alpine Visitors Center which had about 20 cars in the lot, and also drove on past Medicine Bow Curve.

The Milky Way over the parking lot at Milner Pass

I stopped at Milner Pass, where I had the whole place to myself. It was very dark here, now, with only starlight illuminating my path. I used my red headlamp to preserve my night vision.



I decided to setup to shoot some pictures with Poudre Lake in the foreground and was soon rewarded with a meteor reflecting on the lake.


Meteor over Poudre Lake

At one point, just as I had finished re-adjusting the framing of the camera on the tripod, I saw an incredible bright meteor flash by, but I didn't have an exposure going. I tripped the shutter release, and was still able to capture the "smoke" that still hung in the atmosphere!

Meteor "smoke" at top center; it hung there for over 4 minutes!

Soon, I realized that the moisture evaporating off Poudre Lake was fogging my lens, so I packed up at about 1:30am and headed east. Again, I skipped Medicine Bow Curve and the AVC, and didn't stop again until Rainbow Curve, where I joined the still active party of observers and photographers.

Looking east from Rainbow Curve; light curves are cars on Trail Ridge Road at 2am!

As I had done earlier, I setup my gear to shoot continuously, hoping to catch a big meteor, and it wasn't long before I was rewarded with this shot, the best one I captured of the night.

This huge meteor streak left it's own little smoke cloud for several seconds

I was getting pretty tired, so at about 3:30am I packed up and drove back home, but couldn't resist taking a shot of our house before I went inside to hit the sack!


It was a very fun night!

Milky Way over Lake Irene (Oct 24)

Astrophotography interests me, but I'm not really an astronomer-type with a camera and telescope (like my talented photographer friend Pat), but I do enjoy trying to make images of the stars.

I like being outside, especially in a really dark sky area and observing and photographing the Milky Way. The last really good dark sky experience was in Walden, Colorado when we went there to see the Perseids meteor shower.


Image from near Walden, Colorado during Aug 2013 Perseids

Though most of Rocky Mountain National Park isn't in a truly dark sky location, it's still better than being in Denver or Estes Park where there's quite a bit of light pollution.


Light pollution map for Colorado (from 2006 satellite data)

But ever since I saw some of Erik Stensland's night sky photos taken at Lake Irene in RMNP, I've been wanting to get up there. So finally we did.

We went up the day after my hike to Estes Cone, partly because the skies were supposed to be pretty clear, plus, on this date, there was a new moon which had already set earlier in the evening. This, combined with the shorter days in late October, we could go out pretty early and have it be pretty dark.

Lake Irene is about an hour from our house on Trail Ridge Road, so we left about 9pm and arrived at the parking lot to find only one other car (which was one more than I expected!).

We took our Saab convertible up there and shortly after arriving, we put on a bunch of layers and then put the top down. Susan laid down in the back seat to stare up in to the sky, and I wandered around the parking lot with the camera and tripod getting accustomed to the darkness.


Night sky above Lake Irene

The Milky Way above the parking lot at Lake Irene

In 15-20 minutes our eyes got used to the darkness and the Milky Way was there in all its glory. And not only that, staring up into the sky allowed us both to catch the occasional meteor streaking by.

After awhile, we decided to turn our headlamps on and walk on the maintained path to Lake Irene. I was hoping to find still water on the little lake to catch reflections of the stars.


Lake Irene

For the most part, we weren't disappointed. :-)


The starlit trail along Lake Irene

We walked along the edge of the lake, eventually walking around a good bit of it. I was concerned that maybe there was another photographer there because of the car in the parking lot, but we never saw or heard another person.

We were having lots of fun stumbling around in the dark and did a couple of light-painting experiments.


A favorite shot of Susan shining her headlamp on the trail near the lake



Finally, we decided to leave and see what else we could find on the way back home.

We stopped for a few minutes at Rock Cut, but this was even closer to the city lights from Denver, Longmont, Loveland, and Fort Collins.


Continental Divide from Rock Cut

Looking west from Rock Cut with a car on Trail Ridge Road

We made one quick stop at Rainbow Curve for a photo of the lights of what we call "the Valley", and then headed home and to bed.


Looking east from Rainbow Curve

The shot above from Rainbow curve is really interesting. First, you can see there are far fewer stars visible because of the light pollution from the I-25 corridor. You can clearly see the outline of Deer Mountain right of center, with the lights of Estes park to the right. The two light streaks at bottom center are other cars coming up Trail Ridge Road. And there are two small reflections (not lights) in Horseshoe Park -- those are Sheep Lakes! And if you go full screen you might even see meandering Fall River.

If you're curious about camera settings, here's some info. These were shot with a Canon 5D Mark III and a "fast" lens, the Canon EF 24mm f/1.4 L. A tripod is a must. Most shots were about f/2.0, about 2500 ISO and about 25 second exposures. You're "supposed" to use a shutter release, but I often just use the 2 second timer. The hardest part is getting good focus. I switch the lens to manual focus, find a very bright star, and then switch to "Live View" and use 5x or 10x magnification on then adjust the focus ring until the points of light are focussed.

It was a great night to be out, and I finally got to capture the night sky from Lake Irene. I didn't get the fine art results someone like Erik gets, but it was a lot of fun to try!


Lake Irene

Lunar Eclipse at Sprague Lake (April 15)

We were keen to see the relatively rare total lunar eclipse aka "Blood Moon" on April 15, so after our Bluebird Morning outing, we tried to nap so we could stay up late to catch the peak of the eclipse at around 1:45am MT.

We were fortunate to have clear skies for the night.

We had planned to both go back to Sprague Lake, but the wind had picked up a lot and Susan decided to stay home and watch the eclipse from our house/deck, and I went on to Sprague Lake at about midnight. I found only one other car in the parking lot.

I gathered my gear bag and tripod and began the 5-10 min walk to the fishing pier on Sprague Lake. The full moon was so bright I didn't even need a flashlight to see the snow-packed trail.

The first thing I did was take a wide angle shot of the mountains to the west.


Pre-eclipse moonlit scene (about 12:20am)

For reference, here's a daytime shot of this same scene.


Daytime (just before 10am) shot looking west from the fishing pier at Sprague Lake

Then I switched to telephoto lens. I wanted as much "reach" as possible, and after the first few shots I decided to add the 1.4X tele-converter (TC) to my 100-400mm lens. Unfortunately, this combination resulted in a maximum aperture of f/8.0, requiring a noisier high ISO setting, plus the TC makes the image sharpness pretty soft.

So overall, I wasn't that pleased with my results, but it was a lot of fun. I learned a few things, and I'll practice until I get better. My goal next time is to get something like this, shot by my friend Pat. :-)

But here are a few shots of the progress of the eclipse.


12:50am

1:03am -- the star to the right is Spica

1:26 am

1:45am at the peak of the eclipse

As the eclipse progressed, I was noticing how much darker everything was compared to when I arrived. Many more stars were visible, plus the light on the snow was less blue and more reddish.

So I took a wide-angle "after" picture to go with the "before" picture, above.


View to the west just after the peak of the eclipse, at 1:53am

And I made a few exposures of the night sky in different directions.


2:06am, looking mostly east, towards the lights of Estes Park, Longmont and Boulder

Looking mostly north at 2:07am, now dark enough to see some of the Milky Way

And here's a wide-angle shot looking west, with the "Blood Moon" at the upper left.


Looking west at 2:12am; moon is bright spot at upper left

I'd been outside standing around in the cold and wind for over two hours, so I decided to head home rather than stay and watch the "other side" of the eclipse. It was now dark enough that I used a flashlight and walked back to the car in the empty parking lot.

When I got home I learned that Susan had a very good experience watching from our home. And she stayed warm, too! :-)

There will be another total lunar eclipse on October 8th, so maybe we'll watch that one too!

Fairbanks, Alaska - Part III: The Northern Lights! (March 2014)

... continued from Part II...

Susan writes...  It's not easy seeing green... :-)  Our alarms would go off at 11:30pm or midnight after afternoon and/or evening naps. We'd check our devices and apps -- "Fairbanks has lights!" the Facebook Aurora Borealis Notifications (ABN) page would announce.

We might be seeing a greenish glow to the north... We'd jump out of bed, put on four or five layers of clothes, throw our camera gear and tripod into the car, and head out into the cold darkness. Usually it was around midnight, give or take an hour, and we'd return to bed sometime between 3 and 5 AM. We were continually exhausted, but the exhilaration of seeing this remarkable event of the universe kept us going. We had a difficult time doing anything during the daytime because one or the other of us was always catching up on sleep.

At first we didn't know how to see the Aurora. We didn't even try the first night because of clouds. The second night Mike caught a faint green glow out our front door. The third night the forecast looked better for clear skies and aurora so we headed out towards the Alaska Pipeline viewpoint.

On the way I looked out my window and saw some strange cloud like movement in the sky. Wow, I was seeing it! Because of the surrounding lights I could not detect the green until we stopped and our eyes adjusted to the dark. We stumbled on to a great first viewing experience at the Pipeline, then again later on a side road on the way home. And we were absolutely stoked for more.


Trans-Alaska Pipeline with aurora borealis

We got serious about studying the data and finding more local reports of how and when to see the lights. Seriously obsessed.

Mike writes...

After the first full day, which was overcast, the skies cleared, and stayed that way for almost the entire two weeks we were in Fairbanks. And to add to how ideal conditions were, the moon was either a sliver, or never was up during the night.

Our first night was at the Trans-Alaska Pipeline viewpoint pullout. There were several other cars/people there, no doubt seeking the same thing we were.


Photographers at the pipeline pullout

Although the pipeline pullout was north of Fairbanks and its lights, it was also very close to the main highway going north all the way to Prudhoe Bay, so there was a lot of truck and car traffic and headlights. And because this was a popular, close-in aurora viewing spot, there was a lot of traffic pulling in and out, too.


Highway traffic lights

So we began exploring other locations besides the pipeline pullout. On the Facebook ABN page we saw some pictures taken in Fox, so we drove in there behind the Silver Gulch brewery, but didn't really find the dark spot we were looking for. We decided to head over to Goldstream Rd and found a pullout that gave us some nice views of the sky and some trees to add foreground interest.


Our car on Goldstream Road

Looking down Goldstream Rd towards the northwest; one of our favorite shots



Looking southeast with the moon rising in the Fairbanks "light bubble"

Traffic was much lighter along Goldstream, and there was almost no light from homes. But we kept reading about other locations, so we tried to balance doing a lot of late night driving around in the dark with actually getting to stop and watch and photograph the aurora.

The Steese highway was definitely interesting, but it was a pretty long drive. Plus, the green laser from the LIDAR at the Poker Flat Research Range was often "in the way" of our aurora images.


Along Steese highway, a little past Skiland (can you see the green laser?)

The first few images I shot near Poker Flat I wasn't even aware of the laser, as I didn't notice it with the naked eye. But when I "chimped" the camera display after each shot, I was seeing this very bright vertical line and didn't know what it was. I checked the front of the lens. I reseated the lens. I checked focus. I turned the camera off/on. Finally, I just stared out, and began to see the faint laser. Later I discovered other photographers on the Facebook ABN page had a similar experience.


iPhone shot of our location on Steese highway :-)

Another fun thing we did with photography was renting a fisheye lens. We thought about buying one, but they are expensive and would probably be infrequently used. But we learned that a local Fairbanks camera shop, Alaska Camera - Fairbanks Fast Foto, rented out lenses, so we picked up a Canon EF 8-15mm f/4.0 fisheye zoom lens for a week, and had a lot of fun with it.


8mm fisheye view of most of the sky, taken along Steese highway

Not an aurora shot, but a fun fisheye view of the trees surrounding our Fairbanks home

From a photography perspective, shooting the aurora isn't too different from capturing the night sky or Milky Way. A tripod is a must for long exposures. However, sometimes when the aurora is moving, you'll want a little shorter exposure time to freeze the action, rather than have it blurred. Most of our best shots capturing "structure" were around ISO 4000, f/1.8 - f/2.2, with exposure times of 4-10 seconds. We shot in RAW mode and later adjusted white balance somewhere in the 3800-4200 range. But really, the most challenging part of shooting the aurora is staying warm!

Another night we decided to check out the aurora viewing at Chena Lake Recreation Area, a little east of North Pole. We hadn't scouted this location in the daytime as we did with the pipeline and Steese locations, but it worked out great. We went to the Lake Park first, and could've walked out onto the frozen lake, but it was windy there and we didn't have as good a view of the sky. We drove on into the park, going north to the River Park. There was a big parking lot with excellent views of the sky and just enough interesting stuff on the horizon.


One of our first shots at Chena Lakes

And what a great spot this turned out to be! Not only was the sky dark and the auroral activity some of the very best we saw on our trip, but we ran into a couple of friendly local amateur photographers, Bill and Terry, who gave us some helpful photography tricks and good location tips.


Fun shot in the parking lot: Terry's dog wearing a blinking collar, with Terry at his tripod; our car to his right

15mm fisheye view, almost 180 degrees of the sky at Chena Lakes

We learned a lot here, partly from Bill and Terry, and partly because we saw a level of activity that added new words to our aurora vocabulary: "curtains" and "structure" and "patterns" and "dancing."


I can see a "distorted skull face" in this shot; do you?



We also had a lot of very active displays directly overhead, yielding really cool and ephemeral patterns and colors.


Looking directly overhead






And we learned from our new friends that one "space weather" parameter we newbies had been relying on, "Kp," wasn't nearly as useful as some of the other space weather indicators, like the Bz component (direction) of the Interplanetary Magnetic Field or IMF. A negative Bz value seemed to correlate to more active auroral display.



We had a new appreciation for the scientific, governmental and academic entities watching the sun for solar activity and providing forecasts for not only aurora, but for potential radio blackouts, and in extreme solar events, even impacts to electrical grids like the one in Quebec in March 1989.



Not to mention all the new acronyms: SWPC, GOES, POES, ACE, SOHO, etc.



We spent many hours at home and in the field, looking at space weather, trying to understand the forecasts and match what we'd been seeing with previous forecasts.


Several local photographers and business had great resources for alerting us to auroral conditions. One popular website many of us used was Ronn Murray's webcam.

It was all very educational and fascinating to finally be able to witness firsthand a planetary-scale phenomenon.


Structure and curtains and dancing

Though it was very cold and windy, the high auroral activity at Chena Lake kept the adrenaline flowing and it wasn't that hard to stay warm, especially when you could take a break in the warm car. Plus, we'd learned a lot on previous nights about how to layer up. For Mike, it was poly-pro long johns, fleece pants, cargo pants and wind pants for the bottom, and on top, long johns, fleece shirt, wind-block fleece jacket, and a nylon shell, plus Loki mittens, balaclava, and wool watch cap. And perhaps the most valuable gear for Mike was Sorel mukluk-style boots good down to -100F. His feet were toasty warm!

Our final aurora-viewing location was another closer-in one we learned about from Facebook ABN -- Nordale Road, a north-south running road between North Pole and Chena Hot Springs Rd. It was a quick drive from our place on the north edge of Fairbanks over to Nordale, and though there were more lights from homes, the pullouts along road afforded excellent views of the northern sky.


Along Nordale Road, near North Pole, looking north at 2:42am, March 26

8mm fisheye all-sky shot at Nordale Rd (visible lower left center)

Along Nordale Road, looking east-north-east

About the time we figured out how to dress, where to go, how to be rested, and how to shoot the aurora, it was time to pack up and return to Colorado. But wait! Space Weather forecasts were suggesting that recent solar activity was possibly sending a Coronal Mass Ejection (CME) our way! Should we extend?! We considered it very seriously, even asking the locals on ABN.

On our last night out, we shot some of the night sky from the deck of our house, and went back to Nordale Road for what we hoped would be a grand finale of aurora.


Shooting star captured from the deck

A huge cloud of green aurora filled sky

More curtains descended from the north


Here's a short time-lapse video of the aurora viewed from Nordale Road


The Milky Way was trying to peek through the aurora

We didn't. And it was OK. The CME wasn't a direct hit and didn't produce very much activity, so we felt comfortable with our decision to go home as planned.

We had an early flight, on another clear day, and during the flight to Seattle we had views of Alaskan mountains that rivaled our Denali flight-seeing trip!


Cool sunrise at the Fairbanks airport, waiting for de-icing

Flying over the Alaska Range



And as we approached Seattle, we got a good look at the Olympic Peninsula, including Dungeness Spit, an excellent hike we did last spring.

After we returned home, it took a week or more to settle back into a more normal sleep pattern. And we kept looking at aurora forecasts, wondering what the skies looked like and whether we were missing anything. Sometime in April, the aurora show will be over. The length of the day in Alaska will be much too long to see anything but the very brightest aurora.


Almost back to the Denver airport (above and to right green patch in center)

I think we will want to chase more aurora someday. And maybe not only in Alaska! :-)

Our self-portrait, taken near Goldstream Road