The AstroHub is an observatory hardware controller; it incorporates serial-to-USB converters and a USB hub that allows simple connection of up to 4 serial and 2 USB devices, such as mounts, focusers, rotators, dew controller, etc. as well as the cameras. It then connects to the observatory computer through a single USB cable. The AstroHub is not only an interface, but a microcontroller that controls a focuser, guider, and stepper motors. |
The AstroHub has two "Auxiliary" inputs that require mounting accessory PC boards inside the unit. These provide additional serial connections [Photo to come]; other boards can be purchased that provide stepper motor control and other functions. Basically, I am using this as a simplified way to connect multiple serial and USB devices to the observatory computer. Although the AstroHub has built-in guiding control and focusing control, I am not using those functions currently. However, it does provide a neat package that enables connection of all my astronomical equipment in a simplified way. |
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The above images show the front and rear panels of the AstroHub, including the various serial inputs, USB inputs, control for guider and filter wheel, and ability to control power to the mount (at least for a 12V mount, like the LX200). The photo below shows the AstroHub as part of the observatory electronics stack: |
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In the future, I may move to a telescope-mounted USB hub, and discrete Serial-to-USB converters. However, at this point, the AstroHub provides a great way to connect multiple devices - in my case, 4 Serial and 2 USB (including the mount, focuser, rotator, dew controller, cameras, etc.). I usually leave the Digital Loggers power switch, the AstroHub, and the Dell Astro Laptop powered on 24/7, with power coming from an APS uninterruptible power supply that can supply power to the entire observatory (in the case of a power disruption) for at least 45 minutes. The UPS is connected to the Dell, so will send an alarm in the event of a power failure. |
