What kind of astrophotography is this Explore Scientific ED80 and iEXOS-100-2 package best for?
This package is optimized for wide-field deep-sky astrophotography of large nebulae, galaxies, and star clusters. The combination of the 80mm apochromatic optics and the included 0.8x focal reducer creates a fast f/4.8 imaging system with a 384mm focal length, ideal for capturing faint, expansive targets. The iEXOS-100-2 mount provides the accurate equatorial tracking necessary for crisp, long-exposure images.
How do I control the iEXOS-100-2 mount?
The iEXOS-100-2 mount can be controlled wirelessly using its built-in WiFi or Bluetooth. You can use the free ExploreStars application on a Windows, Android, or Apple tablet (sold separately). Alternatively, you can connect it to a PC and use the ASCOM driver and the POTH Client to control it with ASCOM-compliant astronomy software.
What else do I need to start imaging with this ED80 package?
While this is a very complete package, you will need to provide a few key items:
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A Camera: A DSLR with a compatible T-ring or a dedicated astronomy camera. The camera connects to the M42x0.75 thread on the reducer.
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Power Source: The mount requires 8 'C' batteries (not included) for its included battery pack. For extended use, switch to a compatible lithium-ion power bank or AC power adapter.
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Finder Scope: A finder scope base is installed, but a finder scope or red dot finder is not included and is essential for initial star alignment.
Can the ED80 with the 0.8x reducer frame the entire North American Nebula (NGC 7000)?
Yes, this system is an excellent choice for very large targets like the North American Nebula (NGC 7000). The 384mm effective focal length from the 0.8x focal reducer creates a wide field of view specifically designed to fit large celestial objects into the frame of a camera with an APS-C or smaller sensor, allowing you to capture the full expanse of such nebulae in a single shot.
Is the iEXOS-100-2 mount sufficient for imaging Jupiter with the ED80?
Yes. While the package is aimed at wide-field imaging, the iEXOS-100-2's equatorial tracking also suits planetary work. For imaging Jupiter, you would remove the focal reducer to use the telescope's native 480mm focal length and typically add a Barlow lens (not included) to increase magnification. The mount will keep the planet centered on your camera's small sensor for the high-frame-rate video capture used in planetary imaging.
Why is an apochromatic triplet like the ED80 better than a standard doublet refractor?
An apochromatic (APO) triplet uses a third lens element, in this case one made from HOYA FCD1 ED glass, to achieve a higher degree of color correction. Standard doublet refractors can struggle to bring all colors of light to the same focal point, resulting in a purple fringe around bright stars. The ED80's air-spaced triplet design virtually eliminates chromatic aberration, for brilliant high-contrast images.
What does the PMC-Eight controller do that other GoTo mounts don't?
The PMC-Eight controller uses an 8-core microprocessor, allowing it to dedicate different CPUs to different tasks (e.g., motor control, communication, calculations). This results in smoother, more responsive, and more reliable tracking and slewing compared to conventional single-processor controllers. It also enables robust wireless control and open-source software potential for custom applications.
Do I need a laptop to use the GoTo features of the iEXOS-100-2?
No, a laptop is not required for basic GoTo operation. You can control the mount entirely from a compatible tablet (Windows, Android, or Apple) using the free ExploreStars app via a WiFi or Bluetooth connection. A laptop is only needed if you wish to use ASCOM-compliant software for more advanced observatory control, automation, or plate solving.
How do I balance the ED80 telescope on the iEXOS-100-2 mount?
Balancing is a two-step process. First, balance the Right Ascension (RA) axis by unlocking the RA clutch, positioning the scope horizontally, and sliding the counterweights along the counterweight shaft until the scope and weights balance. The mount comes with two 1 kg counterweights and this package adds two more; telescopes and accessories over 6 lbs need additional counterweights, so use as many as balance requires. Second, balance the Declination (DEC) axis by unlocking the DEC clutch, pointing the scope horizontally, and sliding the 3.4 kg optical tube forward or backward in its mounting saddle until it no longer tips up or down.
Is the included 2-inch diagonal necessary for astrophotography?
No, the diagonal is for visual use only. For astrophotography, you will remove the diagonal and connect your camera directly to either the focuser drawtube (for native f/6 imaging) or to the included 0.8x focal reducer. The imaging train should be as straight and rigid as possible.
