Looks like a nice offering. For those interested in an even more self-service style option -- check out https://github.com/onthegomap/planetiler. Spin up a high-memory spot instance on your favorite cloud provider, run a command, let it run a few hours, and now you've got a complete tileset for the planet at the cost of a couple of bucks. I'm not affiliated but I've been using it for my own project (http://www.lumathon.com/map) and I've been very happy.
Author of post here. One of the cool possibilities here is that Planetiler output is just another dataset, provided it's been converted to the S3-friendly PMTiles archive format (utility here: http://github.com/protomaps/PMTiles)
While Google Maps and MapBox let you customize the appearance of vector maps, you can only modify and remove data that already exists at a zoom level. A self-hosted solution allow products like yours to have 100% custom basemap datasets specific to the application, and serve overlay datasets (like those made with tippecanoe) through the same system.
Yep, it's inspired by COG as well as MBTiles, hence the name. Key differences are:
* like MBTiles it's agnostic to what individual tiles are. You can store vector data as SVG, Protobuf, raster PNGs, JPGs or even raw digital elevation models.
* It's not backwards compatible in the same way Cloud Optimized GeoTIFF is.
* It has a recursive index structure to avoid needing to load in huge indexes at once for large datasets (hundreds of millions of tiles).
* It is designed for remote HTTP range reads. If your application can instead directly access a filesytem, like on a mobile phone, MBTiles, which uses SQLite, is a more established solution.
The specification is open source on GitHub https://github.com/protomaps/PMTiles and is still evolving in response to user needs. I've created direct client support for Leaflet and MapLibre, and plan to work on OpenLayers next.
Ah, so it's a general tile addressable system, where the individual tiles might be vector data, rendered vector data, or raster data. For rendered or raster data, the advantage is that it's a single file, rather than eleventy billion little files and directories. For the vector data, it's a tiling system, which allows you to do the standard things for dropping/combining features as mbtiles, just as one container file.
Resources like this (and as others have mentioned, Dark Site Finder) are very useful for astrophotography, especially for a hobbyist like myself. Many don't realize how relatively close they live to areas with great nighttime viewing conditions.
For example, upstate New York has some great viewing locations, so even if you live in NYC it's an easy weekend trip. Here's a shot I took of the Milky Way taken from such a site (one of the darker spots in the map): https://www.lumathon.com/photo/_qTYviEhy/Colors-of-the-Milky...
Edit: a few more of my other shots of the night sky for anyone interested, various locations, all of which were scouted using a light pollution map like the one posted -- https://www.lumathon.com/dan/photos/tag/stars
Wow amazing! I've been itching to show my kids the Milky Way. I myself have only seen it once in New Zealand decades ago. What is the minimum dark sky rating to be able to see it with the naked eye?
I live in the Bay Area and I know there is Pigeon Point Lighthouse which is a dark sky spot but I think it's often cloudy. If anyone has better suggestions would be grateful to hear those.
I don't think these maps take into account mountains.
There are rest stops on 280 (just south of 92) that (at least used to) host telescope parties:
https://maps.app.goo.gl/vWEkH1bSvaUZKZHS8. You can definitely see the Milky Way from there, but remember it'll take 30 minutes to acclimate your eyes: tell your kids to stay off their phones (!). You're behind the San Andreas range to block out a lot of the peninsula light pollution, and you've got the coastal range holding back the fog (at least most of the time). Less moon is (much) better, and use a satellite tracker to have something else to watch out for.
World Atlas 2015 model accounts for elevation. So locations with higher elevation are darker. But it doesn't account for obstacles like a mountain range shielding you from a city behind it.
I'd suggest taking a road trip and go out to Panamint Springs outside of Death Valley. I forget if it was Zabriskie Point or Father Crowley Vista Point when I was there... but I felt that I could see all the stars that night. There was a distant glow to the east that was Vegas and another glow to the south west that was LA.
This also has an advantage that it's dry and so you don't get clouds as much.
We stayed 2 nights at the hotel there in Panamint Springs back in December, and even right outside the cabins (and nowhere near a new moon) the Milky Way was clearly visible after letting your eyes adjust for a few minutes. This was in the parking lot where there’s no real attempt at avoiding nearby light pollution.
Davenport is a slightly better bet weather-wise than Pigeon Point, as due to the shape of the coastline and prevailing winds the clouds usually get swept past it. But it still gets cloudy from time to time there. Route 1 in general is a toss-up.
If you live in South Bay, the hands-down best place IMO is Pinnacles National Park. It's only 1.5 hours from San Jose, and easily daytrippable.
If you don't want to go that far, try anywhere along the Airline Highway, in the Paicines or Tres Pinos area (just get away from streetlights; for example, Panoche Road is a very, very dark road), Coyote Lake (shoreline is open for stargazing 24 hours; pay with machine at entrance), Henry Coe State Park, or anywhere along Mines Road but at least 15km southeast of Livermore.
Also, if you're going for Milky Way viewing, do make sure you know when and where the Milky Way is visible. The bright part and galactic core are only visible very late at night now, after 11pm or so, in the east direction. In mid-Summer the MW will be in the sky all night. In autumn the MW will be in the southwestern skies early at night and not visible late at night.
At other times, such as in winter, the outer parts of the Milky Way are in the sky, but you need much, much darker skies to make anything of it, and it's hard to see without long exposure photography. The winter side of the galaxy is actually really beautiful if you do a long enough exposure and all the signal processing necessary to get rid of noise.
I once got nice shots from Mt Tam. You can hardly see it, but with an ok camera doing long exposure you can get some nice pictures - even being so close to SF
Not open to non-professionals after dark except for a handful of "Photo Nights" each summer. If you drive up there after dark, you'll get yelled at (at a minimum) or they'll call the cops on you for trespassing.
True enough, but headlights driving up the mountain cause light pollution for the astronomers working at the observatory (who necessarily need to work at night).
"Please do not visit the observatory at night without a ticket to one of our evening programs.
Lick Observatory is an active research facility, and at night all of the buildings are locked and astronomers are working at the darkened telescopes. Telescopes require the darkest possible conditions to detect the faint light from celestial objects. The success of our work relies upon minimizing lights around the observatory at night. Thank you."
Yeah it's indeed my service that I'm in the process of getting off the ground. Thank you sincerely for the compliment -- the UI is definitely something into which a lot of hours went so I'm happy that it's having a positive impact on the experience. (I too wasn't satisfied with some aspects of Flickr and the other big photo hosts which is why I started work on it.)
I don't do astrophotography, my interests are more terrestrial, namely street photography :D
There are lots of street photographers I follow, such as Shin Noguchi [0]. But I absolutely hate how Instagram is the go-to platform for photographers nowadays. I can't imagine a worse viewing experience for street photography, which tends to be ~35mm and landscape, than my phone's narrow, vertical screen. It's awful. But it's the most popular platform today, so there's really no getting around it.
I do a lot of deep sky landscape photography (https://instagram.com/dheeranet/) and dark skies are essential to that. Most of these are taken from pretty dark spots on the map in California.
Especially essential is planning for dark skies in the direction of whatever it is you are trying to shoot, which is in some cases arguably slightly more important than the dark sky level of where you are standing. If a galaxy rises over a city, it's going to be hard to image even if you're far from the city.
One of the tools I use the most is an app called "PlanIt Pro", which gives you pretty much all the info you need, including being able to show where in the sky various astronomical objects are, their magnitude, a VR simulation of them with the 3D topo map, and lots of other things. It also has a light pollution map built-in, and can show you the position of the Milky Way. I plan many of my shots with it. There's a free version and I can't remember which features are omitted from that but it's been worth every penny for me.
I thought that the Northern Hemisphere was basically pointing away from the Galactic Centre, so shots like this were basically only from South America or Australia etc.
Its - brilliant. Well done and thank you
But .. oh man .. the whole of the UK is polluted :-(
maybe a few bits of one Scottish Loch are free.
> I thought that the Northern Hemisphere was basically pointing away from the Galactic Centre, so shots like this were basically only from South America or Australia etc.
From 40N latitude one can see the sky as far south as -50deg declination (50 degrees south of the celestial equator). It's true that the galactic center is in the southern sky, but it's still visible from the northern hemisphere. If you can see Sagittarius (the teapot), you're looking in the direction of the galactic center.
The GP's shot is representative of what one can expect from about 40N. From the southern hemisphere, I've seen shots of the milky way that span from horizon to horizon, so I do think they have the better vantage point.
Public places like parks are generally closed at night, aren’t they? Are there special sites that welcome nighttime visitors? Do you get camping permits? Or just hope the police don’t notice?
