Back on the Air!

April 5, 2019

Greetings LaserSETI supporters.  Many of you may have been wondering if the project was proceeding, but I write today to assure you it has and provide a comprehensive report on our progress these past 9 months since we last updated you.  We apologize for the stall in our communications to you, and will definitely improve the pace of our reports to you as we drive forward to deployment on the sky!

At the time of the last update, in June 2018, two LaserSETI cameras were mounted with their gratings, and lenses into 3-D printed mounts, and fabrication of their environmental, stainless steel enclosure was anticipated to start within the week in accordance with detailed CAD drawings. First light on the observing system of 2 enclosures (4 cameras) was estimated to be 4 months away. 

So, here we are 10 months later, having worked through an intensive Devil-is-in-the-details epoch—and, where are we?  Very close!  The instruments are fully built and undergoing the last test required before going out under the sky.


The CAD drawings for this component underwent several modification cycles to make sure the first two units manufactured would be as close as possible to the final configuration to be deployed globally.  East Bay Machine and Sheet Metal in Concord CA was selected to do the precision component manufacturing because of their previous experience with astronomical observatories and their expertise in working stainless steel. Injury on their staff caused the delivery date to slip to late October.

The delivered units, due to the difficulties in stainless steel welding, contained an unanticipated and uneven gap between the cover and base of the enclosure.  This was eventually sealed with a combination of silicone rubber sheet and weather-resistant EPDM foam. Two 200 mm diameter, 6mm thick, optically flat Borofloat windows were sealed in place with E6800 industrial adhesive and tested by floating the cover upside-down as well as outside in winter rains, to validate all the waterproof seals. Cameras, gratings, motorized shutter windows, a Raspberry Pi 2b control computer with a GPS-based microsecond-accurate time server and environmental sensor suite, MERV13 air filter, Intel PCs for image processing, 10 TB hard disk for data archiving, and a 12VDC power distribution block with fuses were installed, wired, and tested inside the two enclosures. Care was taken with component placement and individual light baffles were implemented to ensure that no light from the various LEDs could enter the cameras. 

Once all the equipment was installed and the enclosure sealed, thermal testing began and identified an inadequacy in heat elimination: the camera-powered exhaust system, which had already been scaled back to support cover removal, wasn’t pushing heat efficiently enough out of the enclosure, causing the cameras to warm up.  Several simple designs were tested, and the most effective design was an “active tailpipe,” shown below.  A single high-quality computer fan sits behind these two downward-facing exhausts, forcing a strong outward airflow, through a stainless-steel mesh which protects against ingress of foreign objects, while the large area of the MERV13 filter lets in clean, cool air into the instrument bay. The system now keeps the camera bodies within 4C of internal ambient temperature which in turn is within 10C of external ambient—a good balance to keep warm in the winter and cool in the summer.

Site Deployment

While our original plan was to partner with an optical observatory in California, we ultimately decided on the Hat Creek Radio Observatory—home of the SETI Institute’s Allen Telescope Array. Since LaserSETI’s unique imaging technique adds up light across its whole field of view, it was a better site because the lower light pollution levels mean more sensitivity to faint signals.  

There are other synergies associated with this choice of a SETI-focused facility, but one obvious problem: this is a radio astronomy facility, and therefore particularly sensitive to RFI (radio frequency interference) potentially generated by the digital components of LaserSETI.  As such, it is necessary to ensure that the additional electronics does not interfere with the sidelobes of the extremely sensitive telescopes. A test plan to evaluate LaserSETI against ITU Rec 279 has been developed and is to be executed soon.  This is the last remaining test, necessarily coming after all other modifications to the instrument and enclosure.

We will perform the tests in the shield room at Minex Engineering in Antioch, CA. We will use an ATA “feed” as the receiver and test at all frequencies from 1 to 10 GHz (the frequencies at which the ATA operates) using a spectrum analyzer programmed to step the receiver frequency band with 10 Hz spectral resolution, maximizing lab sensitivity to any squeak Laser SETI might emit.  At this resolution, it takes just under 10 seconds for each 1 MHz of bandwidth tested, so something over a day for the full scan.  We’re planning on a week to complete these tests. This is an unanticipated requirement, but one that makes a great deal of sense, both now for this first deployment but also future sites around the globe where the ideal site may again be a radio observatory.

Assuming no significant and difficult issues are found in the RFI testing, deployment is now projected for late April or early May. Then we begin the first operational phase: seeing every aspect of the carefully designed and tested system validated in the field—and gathering enough observational data to begin to analyze Laser SETI’s unique window on the universe!

Link for Facebook Live interview recording

June 7, 2018

Thanks to the over 6000 people who tuned in yesterday, and especially those that participated in the discussion!

But we’ve got good news for those that weren’t able to fit the live time slot into their busy lives.  The recording is available now to watch anytime!

Finally, in related breaking news, NASA’s Curiosity rover team just announced the discovery of large organic molecules on Mars!

LaserSETI Facebook Live tomorrow!

Jun 5, 2018

Hello, fellow LaserSETI enthusiasts!

While I’m certain you were hoping this was yet another GDPR email, the actual reason is that it’d been a while since our last update! 

To cure your double-whammy blues, the SETI Institute’s very own Senior Astronomer, Franck Marchis, will do a live interview with LaserSETI project scientist, Eliot Gillum–tomorrow!

So tune in Wednesday, June 6th at 2pm, to hear the latest on construction status, site selection, and schedule going forward.  As always, just go to the SETI Institute page on Facebook to join in on the discussion!

For a bit of fun, and as proof that all the wonderful supporters of LaserSETI are always on our mind, here’s Jill Tarter with Eliot Gillum showing off their delicious pie for Pi Day!

We’re expecting big news in the next few months that you won’t want to miss, so stay with us and keep looking up!

Doors, Sensors, and New Frontiers in Astronomy

Feb 28, 2018

Hello again!

We received requests following the last update to see the real sun-shade doors in action so, by popular request, please enjoy exactly that:

Astute observers may notice that only one instrument is fully populated with optics.  The other is empty as we work on the Raspberry Pi which will attach to that camera and controls the double doors, provides GPS time synchronization, and measures the environment inside the enclosure using a camera, accelerometer + gyroscope (IMU), barometer, and thermometer.

Speaking of the environment, it’s rough outside!  While we’ve designed the enclosure to tolerate and operate in as wide a range of weather as possible, it’s impossible to predict with 100% confidence that we’ve succeeded in protecting the electronics and optics from the elements and maximizing the adverse conditions—mostly wind, temperature changes, and humidity—that we can reliably observe.  We’re particularly interested to compare our inertial measurements to local wind speeds to know how much wind is too much and causes the cameras to vibrate.  We’ll also measure temperature and pressure for correlation with any fogging that (shouldn’t but) might occur and have a camera to visually track the internal environment—primarily to monitor the shutter doors and optical window, but also to catch something we didn’t expect, like a squirrel infestation.  (Which we’ve therefore now prevented by expecting it ahead of time!)

Recall last edition’s exciting announcement that we’ll be building eight cameras into four enclosures split across two observatories (looking at two fields of view).  Our deployment plan is as follows:  Start with two enclosures at one observatory, and make sure they survive the most extreme weather for at least 3-6 months.  Then deploy the second two enclosures at a second observatory, iterating on the design as necessary or at least having gained confidence that this expensive hardware won’t get damaged sitting on top of mountains for years at a time!

Lastly, we wanted to make sure you heard about a special achievement from an unrelated but also crowdfunded project at the SETI Institute.  Unistellar has partnered with us to bring to life a new kind of telescope, the eVscope ™, which makes amateur astronomy not only super easy but, using a radically new hybrid digital/optical system, it yields striking images normally only attainable by telescopes many times its size and uses that same technology to contribute to science.  

They had a wildly successful campaign, raising over $2M, and even though only a first few prototype units have been built, they’re already producing scientific results!  The eVscope’s observations of an asteroid occulting (blocking) a star, allowed scientists to more precisely constrain the orbit and shape of this far out object.  This normally requires a lot of luck and then very challenging coordination between multiple observatories, but a network of mobile enthusiasts is remarkably in a better position to do with the aid of modern technology!  

Their powerful, portable “smart” telescope is available for pre-sale now, and is expected to ship to customers by the end of 2018.  We hope their experiment in revolutionizing astronomy and citizen science is successful and serves as a model for other such projects!

Thank you for reading, please remember to follow the SETI Institute on Facebook and Twitter for more groundbreaking news, and as always thanks for your support!

LaserSETI 2018

January 12, 2018

Hello and happy Trip Around the Sun 2018!  We’d like to help start your year in a positive way with a very exciting announcement.

Thanks to additional donations outside of the Indiegogo campaign, we’re going to be able to deploy EIGHT cameras instead of four, meaning that we can fully monitor two independent fields-of-view!  This is not only very exciting because we’re twice as close to all-sky coverage, but it’s an ideal balance between risk and progress.  We need to prove out the instrument, housing, and operations before putting too much hardware at risk, yet two fields-of-view enable us to compare and contrast what we see in two different parts of the sky.  This can be critical when you’re doing exploratory observations, for instance helping to distinguish instrumental effects from actual observed phenomena.

We’ll start by deploying two enclosures (four cameras) to the first site, then let those “bake” through the worst weather we can find.  Then, in the second half of this year, we’ll deploy the other two to another site thousands of miles away but pointing at the same two patches of sky.  Having four cameras from two sites looking at each patch of sky not only gives us stellar confidence in any events we observe, it also provides coverage in case one site has inclement weather.  That’s what it takes to watch all the sky all the TIME! 

The engineering model on the left (with some panels removed for visibility) is rapidly turning into reality!  The sun shade opens and closes, both in this movie and in real life, and we’re now focusing on the environmental sensor suite: GPS, accelerometers, temperature, barometer, and of course integrating data from local observatory weather systems.  We’re iterating on the mechanical drawings for the enclosure and box underneath which, in addition from protecting the equipment from the elements, will allow the whole system to be tilted forwards or backwards to facilitate field alignment across observatories.  The second pair of cameras have been delivered from the manufacturer, and we’re working with them on a software upgrade to speed the readout rate which might nearly double our sensitivity to short pulses! 

Following up on previous updates, if you missed the Facebook Live we did with Laser SETI scientist Eliot Gillum and Indiegogo campaign whiz Ly Ly, the first and second half videos are available on the SETI Institute Facebook page!  And finally, all perks were shipped at the end of Nov or early Dec, so we hope everyone has received their order and is now showing it off with the kind of pride and zeal normally reserved for pictures of a first-born child!

Thanks again, and more to come as it develops!

LaserSETI Facebook Live on Monday, Dec 4!

December 1, 2017

We interrupt the regularly scheduled programming for a brief announcement:

Encouraged by your positive feedback on these updates via Indiegogo, we thought you might enjoy a LIVE video Q&A session with the people behind the Laser SETI campaign and project!  Hear the story behind the perks and progress on the engineering.

Find us on Facebook, @SETIInstitute, and join us this Monday afternoon at 3:30pm (Pacific time).  Bring your questions, stay for the great science news!

November 20, 2017

I know most of you didn’t support the campaign purely for the great perks, but we hope you’re as excited as we are to hear that you’ll be receiving any perk you ordered very shortly!  All items have been manufactured and delivered to us, orders have been locked on Indiegogo, and we’re starting the shipping process now.  There’s a lot of other work to do around here, but we think we can box up and ship them all out within the next couple weeks!

Have you or someone you know been inspired by Laser SETI, or the search for any other type of techno-signature?  We’ve heard such wonderful, supportive messages from wide and far that we wanted to share them with others!  If you have a haiku, painting, burnt toast reminiscent of our camera, or just a sentence or two you’d like to share, please tweet it to @SETIInstitute or share it #LaserSETI

For those with upcoming seasonal festivities, we hope to see some inspiration shared by wearing a Laser SETI hoodie instead of an ugly holiday sweater, or a SETI hat instead of knit cap.  We thought we might even discover some feline alien life chasing a Laser SETI laser pointer!

On the engineering front, it’s nothing but progress as well!  As backers, we’re pleased to share with you the above preview rendering of the two-camera enclosure.  As we mentioned in the campaign originally, two cameras are required per field-of-view at each site, and this modular and scalable system houses both the cameras as well as the electronics required to manage, process, and store data for them.  Its “eyes” are half closed because the extra shutters which protect the optics from direct sunlight are shown halfway through the opening process.  

There’s more than we can explain here shown in the picture, but of course there’s also a lot more progress that you can’t see!  The electrical system has been built and tested.  Structural parts that can’t be 3D printed are being sent for fabrication, which is one of the longer aspects of the schedule.  Exact cross-site field-of-view alignment models have been built.  We’re currently targeting the end of February to deploy the first cameras, and we’ll update you all on that schedule as it develops–and we’ll try to continue to share pictures in each update so you can literally see the instrument come to life!

Thanks again for all your support and happy holidays to all Earthlings who celebrate them!

September 29, 2017

Hello from LaserSETI headquarters!  Thanks to your generous support, we’ve made great progress and we’re excited to share what’s been happening.
The shipping and receiving department has been very busy.  Our fabulous custom crystals have arrived, and the shirts and hoodies should be in soon!  We’re still ahead of schedule on getting your perks out, and we’ll let you know when they start shipping out.
The camera systems themselves have also had a lot of deliveries.  We can’t wait to start working with the second camera, which will be arriving at the SETI Institute on Monday.  The transmission gratings are being manufactured, the computer to run the cameras has come in, as well as most of the components of the electrical, environmental, and site services subsystems.  In numbers, we’ve spent close to $50k thus far, have 21 components in hand, 5 on order or in transit, 3 ready to order, and 7 waiting on test results or TBD.  This is exactly where we were hoping to be at this point, we’re very excited about the modular enclosure design, and hopefully by the next update we’ll have some pictures to show the pieces coming together!
Cameras are, of course, no good unless you have somewhere to put them, and we were thrilled to have a very positive response and walkthrough at our first-choice observatory!  We can’t announce where that is yet, but site requirements have been established, met, and already exceeded in some cases, and the paperwork is underway. When it’s official, you’ll be the first to know.
In summary, the project and perks are off to a great start.  We’re very glad to have you all aboard, and we hope you’re enjoying this as much as we are!

Thank you for believing in Laser SETI and helping to make it happen – we couldn’t do it without you!

August 18, 2017

We did it!

We hit our $100,000 goal!!!  That means this groundbreaking science project is full speed ahead! 

On behalf of the SETI Institute scientists and staff, I want to thank each and every one of you for getting us here.  We couldn’t be more excited!  We’ll get moving on this next phase of the project as soon as possible, and of course keep you all in the loop as we progress.

A guiding principle for good projects and good people is “it’s always better to under-promise and over-deliver, than over-promise and under-deliver.”  While we listed December 2017 for most perk delivery timeframes, know that we’ll get started on those as soon as we can.  We kept our projections conservative, and we’ll hope to get those out to everyone ahead of that timeline.

But wait, there’s more!  As we’ve said repeatedly throughout the Laser SETI campaign, we’re all about efficiency, and now that we’re looking at actuals instead of projections, there’s a possibility we may be able to deliver the dual-site system!  That would validate the entire system and allow us to begin true wide-field SETI operations.  There’s a lot of work ahead of us to make that happen, but not many hours left in the campaign and a few more donations could really make the difference!

So please don’t stop sharing your viral enthusiasm with others!  Of course, it’s never too late to support Laser SETI.  You can always go to http://seti.org/donate and put “Laser SETI” in the comment.

And again, THANK YOU!

August 17, 2017

We’re very close to the finish line and it couldn’t be more exciting!  Just today, Laser SETI hit over 500 backers, and we’re so grateful to each and every one of you.  We want to continue doing groundbreaking science and our motivation and resolve increases every time we hear from someone who shares our passion!

Speaking of passion, Seth Shostak, our Senior Astronomer, has recorded an urgent message for those interested in SETI.  Please enjoy his witty commentary and prepare yourself for future party repartee.

Another way to satisfy your curiosity and educate others is an article published today, written by project scientist Eliot Gillum, answering your questions as solicited by Astronomy Magazine.  Along similar lines, we encourage you to read the recent Centauri Dreams blog, Laser SETI in Context.  Learn more about the broader context of SETI research and contact scenarios!

Finally, we need to issue a small correction from the last update.  The crystal is 2” x 2” x 3” and will still include the lighted base.  We apologize for the misunderstanding.

Thanks again for all your support!  Please continue to show your enthusiasm with those around you, perhaps by sharing the above resources.  We look forward to continuing the conversation with you all as we progress on this project in the coming months!