Mariposa Loop

Updated on Saturday, February 19, 2022

Mariposa Loop

Mariposa Loop

Mariposa Loop

Mariposa Loop in Briones Regional Park near Lafayette. Park near Happy Valley Elementary School and then head up Panorama Drive to the top to get the trailhead. It's just over three miles. The first mile goes up 600 feet without stopping and the views are fantastic in every direction. This is the first time we've visited Briones, will be back soon as it looks like it has a lot of decent loops.

Hike starts at: 37.905312, -122.142265. View in Google Earth.

Add your comment...

Related Posts

You Might Also Like

(Hike Map)

(Published to the Fediverse as: Mariposa Loop #hike #lafayette #vulture #map #hikevid #video Three mile hike in Briones Regional Park near Lafayette. Steep first mile goes up 600 feet, then a pleasant loop back to the start. )

Richards Fire Road

Updated on Saturday, February 19, 2022

Richards Fire Road

Richards Fire Road

A 4 mile loop starting at Skyline Boulevard and descending through dense forest from 2,000 feet to McGarvey Flat at 1,380 before ascending in slightly brighter but still shaded conditions. Perfect on a warm day. This is in Huddart Park in San Mateo county, just the other side of 35 from Purisima Creek. The hyperlapse video shows the second half of the hike.

Hike starts at: 37.429281, -122.312027. View in Google Earth.

Add your comment...

Related Posts

You Might Also Like

(Hike Map)

(Published to the Fediverse as: Richards Fire Road #hike #sanmateo #huddartpark #redwoods #map #hikevid #video Richards Fire Road, a pleasant four mile hike in Huddart Park (San Mateo, California). )

Cause and Effect, or Strange Skies over San Francisco

Updated on Saturday, February 19, 2022

Cause and Effect, or Strange Skies over San Francisco

A timelapse combining the mid-August storm and the 'day without a sunrise' on September 9, 2020 in San Francisco (lightning from the storm contributed to the wildfires that blocked the sun).

Add your comment...

Related Posts

You Might Also Like

(More Timelapses)

(Published to the Fediverse as: Cause and Effect, or Strange Skies over San Francisco #timelapse #sanfrancisco #video #smoke #storm Time lapse of the day without a sunrise in San Francisco and the storm that caused the fires that blocked the sun. )

West Portal Sunset

Updated on Saturday, February 19, 2022

West Portal Sunset

Spectacular sunset the other night, the kind where I really wish I'd left a timelapse running an hour earlier. This time I did! It was just a test run of a new GoPro Hero 8 Black to see what the nightlapse mode is capable of. I left everything on auto, including the interval, which I thought was an odd thing to have an auto mode for but that it might produce some interesting effects. Nope. The GoPro does a nice job of ramping down the shutter speed and ramping up the ISO, but it just randomly toggles the interval between one and two seconds occasionally which just glitches the video. So won't be using that mode again.

(Previously: Sunset sunset 4k)

Add your comment...

Related Posts

You Might Also Like

(More Timelapses)

(Published to the Fediverse as: West Portal Sunset #timelapse #sunset #westportal #gopro #video Time lapse of sunset looking west over The Pacific from West Portal in San Francisco, California. )

Storm builds over Lassen Peak (Timelapse)

Updated on Saturday, February 19, 2022

Storm builds over Lassen Peak (Timelapse)

A storm builds over Lassen Peak. Filmed from Lake Helen in Lassen Volcanic National Park.

Add your comment...

Related Posts

You Might Also Like

(More Timelapses)

(Published to the Fediverse as: Storm builds over Lassen Peak (Timelapse) #timelapse #lassen #storm #video Time lapse of a storm building around Lassen Peak, shot from Lake Helen. )

San Francisco Stars

Updated on Saturday, February 19, 2022

San Francisco Stars

Unusually good night sky conditions in San Francisco recently. Here's a video of several timelapses shot over the last couple of months. The sequences are: (super) moonrise, no Lyrids over Sutro Tower, Ursa Major rotating around Polaris, Orion setting, moonset.

Add your comment...

Related Posts

You Might Also Like

(More Timelapses)

(Published to the Fediverse as: San Francisco Stars #timelapse #stars #sanfrancisco #sutrotower #video Time lapse of stars over San Francisco (including moonrise, Orion setting and Ursa Major rotating around Polaris). )

Summer Solstice 2020

Updated on Saturday, February 19, 2022

Summer Solstice 2020

In 2020 the Summer Solstice is at 9:44pm UTC on June 20.

We get solstice from the Latin sol (sun) and sistere (to cause to stand) - the moment when the Sun stands still in its journey from north to south and back again.

Summer Solstice is the instant when the Sun is at its highest point in the sky, on the longest day of the year for the Northern hemisphere. This happens because the Earth is tilted by a little over 23 degrees (our planet rotates once a day, but relative to our orbit around the Sun the axis of rotation is at an angle). As we orbit the Sun this tilt means that different latitudes experience more or less sunlight over the course of a year. This pattern is most extreme near the poles. In the Arctic Circle the Sun never sets at the height of summer and never rises in the depth of winter. We mark two solstices each year, summer and winter. At the Summer Solstice the Sun is directly over the Tropic of Cancer (a little over 23 degrees north). We also observe two equinoxes, spring and fall (vernal and autumnal), halfway through the cycle when the Sun is directly over the Equator and a day is the same length everywhere.

The video below shows how the pattern of day and night changes over one year. You can see when the poles are completely dark or light, and the moment when the Sun 'stands still' before days start to get longer or shorter again.

Here's another perspective. This video shows a view from San Francisco made from pictures that each show a complete day (each vertical line on the picture was shot at a different time with noon at the center). You can see the length of day changing throughout the year. On less foggy days you can also see the position of sunset moving, especially with the days getting longer towards the end when San Francisco experiences less fog.

Summer Solstice isn't always on June 20th - sometimes it's June 21st or June 22nd. Irritatingly a day on your clock is not the same as a solar day and a calendar year is not the same thing as one trip around the Sun. This is why we have leap years and leap seconds to stay roughly in sync with celestial mechanics.

It's also interesting to note that Summer Solstice isn't when we're closest to the Sun or when temperatures are the highest. The Earth's orbit is elliptical and we're actually furthest away around the Summer Solstice (for now - this changes over time). Our Northern hemisphere summer is driven by sunlight hitting us directly rather than at an angle (seasons are driven by the 23 degree tilt and the position of the orbit more than our distance from the Sun). Temperatures continue to rise after the Summer Solstice mainly because it takes a while to heat up water, and so warmer weather lags the increase in direct sunlight (and vice versa as we head into colder weather after the Winter Solstice).

The exact moment of Summer Solstice pictured at the start of the post and the video of day/night over a year were created using Catfood Earth. Catfood Earth generates wallpaper from NASA Blue and Black Marble images to show the current extent of day and night combined with near real time cloud cover. Catfood Earth is totally free and available for Windows and Android.

(Previously)

Add your comment...

Related Posts

You Might Also Like

(All Code Posts)

(Published to the Fediverse as: Summer Solstice 2020 #code #solstice #summer #winter #earth #northern #estival #video In 2020 the Summer Solstice is at 9:44pm UTC on June 20. Summer Solstice is the moment when the Sun is at its highest point in the sky, on the longest day of the year for the Northern hemisphere. This happens because... )

ISS Lunar Transit (4K Video)

Updated on Saturday, February 19, 2022

ISS Lunar Transit (4K Video)

I tried this with a solar transit last year and discovered that my expensive phone can't keep time. Learned my lesson - for this lunar transit I shot video a few minutes before and after. The video is 4K and has the unedited 1 second transit and a zoomed in slow version where you can actually see the thing. Unfortunately this means the composite at the top is made from frames extracted using ffmpeg. Next time, two cameras, so I can attempt a burst as well as a video.

Shot on a Sony RX10 IV from San Francisco.

(Previously)

Add your comment...

Related Posts

You Might Also Like

(Recent Photos)

(Published to the Fediverse as: ISS Lunar Transit (4K Video) #photo #iss #moon #video 4k video of the International Space Station transiting the moon on May 7, 2020 shot from San Francisco, California )

4K One Year Global Cloud Timelapse

Updated on Saturday, February 19, 2022

Hurricane Dorian in Catfood Earth

Six 4K images a day at 24 frames per second (so each second is four days) from April 18, 2019 to April 17, 2020:

I made a version of this video a couple of years ago using xplanet clouds. That was lower resolution and only had one frame per day so it's pretty quick. This version uses the new 4K cloud image I developed for Catfood Earth just over a year ago. I've been patiently saving the image six times a day (well, patiently waiting as a script does this for me). It's pretty amazing to see storms developing and careening around the planet. The still frame at the top of the post shows Dorian hitting Florida back in September.

Add your comment...

Related Posts

You Might Also Like

(All Code Posts)

(Published to the Fediverse as: 4K One Year Global Cloud Timelapse #code #software #video #timelapse #animation #clouds #earth Animation of a year of global cloud cover from April 18, 2019 to April 17, 2020. You can see storms developing and careening around the planet. Rendered from six daily 4K images. )

Coastal

Updated on Saturday, February 19, 2022

Frame from Coastal Timelapse

An abstract timelapse of the California coast.

The sequences were shot over about six hours using a Sony RX100V, f5.6, 1 second exposure, ND3 filter and ISO 80 to around 250 depending on the light. Most of the frames are from the Marin headlands, one sequence is from Sutro Baths in San Francisco.

Post production used Lightroom and LRTimelapse. I skipped LRTimelapse rendering and wrote a custom application to mirror the frames (for this video mirroring is left/right top/bottom and for one sequence both). I then used ffmpeg to render each mirrored sequence and Premiere Elements to edit them together. Finally I added music with Filmstro.

If anyone is interested in the mirroring application post a comment below and I'll tidy it up a bit and release it.

This timelapse is absolutely inspired by the main title sequence for Bosch on Amazon Video.

Add your comment...

Related Posts

You Might Also Like

(More Timelapses)

(Published to the Fediverse as: Coastal #timelapse #video Abstract timelapse of the California coast (mostly the Marin Headlands). Shot on Sony RX100V, post production in Lightroom, LTTimelapse, Premiere Elements, Filmstro and a custom frame mirroring application. )