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Remote Hosting of Robotic Telescopes
Remote hosting of one's equipment is a big step up from setting up just outside your house or around your local area, particularly if you do not have a permanent setup as it stands. It means leaving your equipment at a remote location, sometimes hundreds or thousands of kilometres away, not immediately accessible, and only controlling it remotely through the Internet. Unnerving as it may seem at first, it is also an amazing way of delving deep into astrophotography - it potentially provides better imaging conditions (SQM, seeing, etc), more nights per year that you can image, imaging on work nights, imaging mostly if not completely automated and also without having to ever set up and dismantle your equipment again. A robotic telescope is essentially a complete astrophotography setup that has been set up in such a way that absolutely everything about it can be controlled remotely without direct physical intervention.
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Entre Encinas y Estrellas (e-EyE) is one of numerous remote hosting facilities dotted around the world. In particular, e-EyE is located in the heart of Extremadura in Spain, as shown on the map and below.
Latitude: 38° 13' 10.89" North |
e-EyE's remote hosting facilities are bar-none some of the very best in the world and without a doubt, the best in Europe. The observatories house six to eight modules and are built slightly elevated above a massive concrete slab put into the ground. Part of this massive reinforced concrete slab are the piers that stick out and into the observatory through the flooring. This is where customers place their mounts, usually with some extension to height. Around the piers is removable flooring that gives access to one's own wiring (mains electricity and network).
Each module is completely isolated from the modules next to it. The retractable roof is controlled by the customer alone - there are no communal roofs. This means that renting a module to remotely host your equipment gives you your own observatory for all intents and purposes. The module consists of a 3.5 x 3.2 metre floor space with your own retractable roof, allowing you to place whatever equipment you want as long as it fits inside the module.
The retractable roofs are controlled by individual TALON6 ROR controllers. These are attached to a motor and can vary how open the roof is by percentage (0% closed, 100% completely open, and everything in-between). The roof controller is connected to your computer via a USB cable, which connects via ASCOM. An ASCOM program is installed on your computer to connect to the roof controller to open and close the roof, or open it to a specific percentage. There are several safety mechanisms in place in order to protect your equipment. The ASCOM program reports when the roof is fully open or closed via magnetic sensors placed on the roof itself. The program also closes the roof fully on certain trigger conditions, including:
Any trigger to closing the roof also parks your mount through an ASCOM Park command. The ASCOM program can wait a specific amount of time for the mount to park, or wait for magnetic sensors on your mount (provided by e-EyE, which can be stuck to your mount) to report that the mount has finally parked. All this ensures your equipment is fully protected at all times, even if you are not personally monitoring it. For added peace of mind, customers tend to bring a webcam that is placed on the wall directly facing the equipment, and connect it either directly to their computer via USB (with an extension) or to the network (if it is an IP Camera). This allows the customer to monitor his/her equipment directly.
In addition to the observatory module rented, customers get access to e-EyE's own AAG CloudWatcher, which provides live data on cloud cover, wind, temperature, rain and sky brightness (updated in minute intervals or on user request). Customers also get access to live SQM data and seeing data captured by on-site cameras and to an All-Sky camera (to monitor the night sky in real-time). The live feeds from all these cameras are accessible via the e-EyE website, allowing all devices to access them.
The Internet connection at e-EyE is a fibre optic connection providing symmetric 100 Mbps download and upload with plenty of room to expand to further bandwidth if required in the future. The experience of remote control is beautifully smooth and responsive at all times of the day, from anywhere in the world.
Lastly, e-EyE offers different levels of support to customers. Major works on customer equipment can be carried out by e-EyE staff at some minor extra cost, but small and common works are carried out by e-EyE staff free of charge. The staff are always extremely friendly and supportive and share the same passion for astrophotography.
The retractable roofs are controlled by individual TALON6 ROR controllers. These are attached to a motor and can vary how open the roof is by percentage (0% closed, 100% completely open, and everything in-between). The roof controller is connected to your computer via a USB cable, which connects via ASCOM. An ASCOM program is installed on your computer to connect to the roof controller to open and close the roof, or open it to a specific percentage. There are several safety mechanisms in place in order to protect your equipment. The ASCOM program reports when the roof is fully open or closed via magnetic sensors placed on the roof itself. The program also closes the roof fully on certain trigger conditions, including:
- Loss of USB connection to the computer (for a given time)
- Loss of Internet connection (for a given time)
- Loss of mains electrical power to the roof controller and motor (for a given time - e-EyE's powerful UPS kicks in to close the roof)
- Cloud/rain condition trigger from an AAG CloudWatcher
Any trigger to closing the roof also parks your mount through an ASCOM Park command. The ASCOM program can wait a specific amount of time for the mount to park, or wait for magnetic sensors on your mount (provided by e-EyE, which can be stuck to your mount) to report that the mount has finally parked. All this ensures your equipment is fully protected at all times, even if you are not personally monitoring it. For added peace of mind, customers tend to bring a webcam that is placed on the wall directly facing the equipment, and connect it either directly to their computer via USB (with an extension) or to the network (if it is an IP Camera). This allows the customer to monitor his/her equipment directly.
In addition to the observatory module rented, customers get access to e-EyE's own AAG CloudWatcher, which provides live data on cloud cover, wind, temperature, rain and sky brightness (updated in minute intervals or on user request). Customers also get access to live SQM data and seeing data captured by on-site cameras and to an All-Sky camera (to monitor the night sky in real-time). The live feeds from all these cameras are accessible via the e-EyE website, allowing all devices to access them.
The Internet connection at e-EyE is a fibre optic connection providing symmetric 100 Mbps download and upload with plenty of room to expand to further bandwidth if required in the future. The experience of remote control is beautifully smooth and responsive at all times of the day, from anywhere in the world.
Lastly, e-EyE offers different levels of support to customers. Major works on customer equipment can be carried out by e-EyE staff at some minor extra cost, but small and common works are carried out by e-EyE staff free of charge. The staff are always extremely friendly and supportive and share the same passion for astrophotography.
Telescope Aperture |
Monthly Price for 12 Month Contract (exc. 21% VAT) |
<= 8" (<= 204mm) |
€315 |
> 8" - 11" (> 204mm - 280mm) |
€341 |
> 11" - 15" (> 280mm - 381mm) |
€368 |
> 15" - 19" (> 381mm - 483mm) |
€425 |
> 19" - 24" (> 483mm - 609mm) |
€525 |
Local Night Sky and Weather
Having your equipment hosted remotely would not be nearly as good if the night sky was not up to standard. e-EyE's night sky is of the very best you can find in Europe. Dark Skies Awareness publishes the following useful nomogram for determining the quality of one's night sky based on SQM readings:
From this nomogram, we can see that an SQM reading of 21.6 or so indicates a perfectly dark sky with the Milky Way rich in fine detail. With this in mind, we can compare with e-EyE SQM readings, captured and plotted on a graph using their own SQM camera:
In fact, the average SQM reading at e-EyE is 21.5, with readings as high as 22.7 in some instances. Indeed given e-EyE's location in Spain, it is an extremely dark night sky site and therefore makes it an ideal location for astrophotography. Moreover, given the latitude at e-EyE, it gets a clear view of the Milky Way core to the South - an area that cannot be imaged by astrophotographers living significantly North of Spain. The following are some wide-angle night sky photographs captured on a DSLR, to demonstrate the impressive quality of the night sky at e-EyE's location.
Last but not least, the weather at e-EyE's location. Spain is generally known for its good climate throughout the year, and e-EyE is no exception. In fact, given e-EyE's distance from the sea, high altitude above sea level and location within Spain, it is subject to extremely dry climate during most of the year. Humidity levels fall below the 30% mark during the driest months of the year. Dew heaters are generally only needed for two months in the year. On average, e-EyE has been recorded to see 200 clear nights a year, available for astrophotography. The minimum that has been recorded the last few years has been 132 clear nights and the maximum has been 236 clear nights. At night, local temperatures fall to around 0°C during winter months and 15°C during summer months, allowing very effective and consistent use of cooling on imaging CCD cameras all year round.
Other Facilities and Tourism
The basis behind e-EyE is to be an astronomical complex. As such, it offers many things beyond simply hosting your equipment in an observatory module. On-site in its secure facility are a number of modern houses for customers to stay in overnight. These houses and the surrounding grounds are stunningly beautiful and perfectly blend together the rural location with modern architecture. As you walk up the footpaths on the grounds, dim red lighting illuminates your path. Each house is of a different size, accommodating different number of guests, although they all offer a porch, a kitchen, a sitting room with TV, one or two bathrooms and one or two bedrooms.
The houses are situated a few minutes walking down the footpaths, on the opposite side of the grounds to the observatories. Just outside the houses is a swimming pool that can be used freely by guests. The houses and every single corner of the e-EyE site itself is fully covered by Wi-Fi Internet access, provided for all guests to use freely.
The houses are situated a few minutes walking down the footpaths, on the opposite side of the grounds to the observatories. Just outside the houses is a swimming pool that can be used freely by guests. The houses and every single corner of the e-EyE site itself is fully covered by Wi-Fi Internet access, provided for all guests to use freely.
The e-EyE grounds themselves are extensive and have two large areas where cars and even motorhomes can be parked (one area near the observatories and another area near the houses). Adjacent to the e-EyE grounds themselves, about 9 kilometres down the road, is Fregenal de la Sierra - a small town with fantastic local food of Extremadura and all necessary amenities. The surrounding area of Extremadura is also rich in history, culture and sites to visit for anyone wanting to do more than just astronomy.
Near the observatories on the grounds themselves is a large circular platform with a couple of benches. This is wired up to mains electricity via a few points and has Wi-Fi coverage for Internet access. This platform is normally used for star parties, but can also be used by house guests to put up their equipment and connect to it via Wi-Fi from another computer in their rented house. This means that customers renting a house can also take advantage of e-EyE's amazing night sky to practice some astrophotography during their stay, taking advantage of remote control locally within the grounds themselves.
Surrounding the large circular platform near the observatories is an area for BBQs, which are sometimes hosted during star parties and other events. Also nearby is a conference room with bathrooms just outside, a large table, a kitchenette, a projector and a screen. This is used to host courses on numerous areas of astronomy, taught at e-EyE.
There is much to enjoy about e-EyE and it is definitely worth visiting and staying at a house on-site, both to enjoy Extremadura and to delve into astronomy. The following is a list of prices per night for the houses on-site:
Near the observatories on the grounds themselves is a large circular platform with a couple of benches. This is wired up to mains electricity via a few points and has Wi-Fi coverage for Internet access. This platform is normally used for star parties, but can also be used by house guests to put up their equipment and connect to it via Wi-Fi from another computer in their rented house. This means that customers renting a house can also take advantage of e-EyE's amazing night sky to practice some astrophotography during their stay, taking advantage of remote control locally within the grounds themselves.
Surrounding the large circular platform near the observatories is an area for BBQs, which are sometimes hosted during star parties and other events. Also nearby is a conference room with bathrooms just outside, a large table, a kitchenette, a projector and a screen. This is used to host courses on numerous areas of astronomy, taught at e-EyE.
There is much to enjoy about e-EyE and it is definitely worth visiting and staying at a house on-site, both to enjoy Extremadura and to delve into astronomy. The following is a list of prices per night for the houses on-site:
House |
Price Per Night (inc. 21% VAT) |
Casa Cefeo |
€120 |
Casa Andromeda |
€180 |
Casa Cassiopeia |
€200 |
Customers who are renting an observatory module for their equipment enjoy a 15% discount on all house rental prices listed above.
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