Dual OTA Mode

Fig 37: Dual OTA Alt-Az

The LX80’s sectional counterweight shaft is designed to accept a secondary dovetail adapter enabling you to mount a second optical tube assembly. This offers you the versatility and convenience of having two different optical systems mounted and ready for use at the same time. This is perfect for public outreach events where dual OTAs allow for multiple viewing of the same object. LX80’s unique design allows for a total combined instrument weight of up to 70 pounds in this configuration.

The secondary OTA will need to be equipped with a securely mounted “Vixen®” style dovetail. This OTA dovetail is not included and will need to be purchased separately and mounted to your secondary OTA.

Alt-Azimuth Mode

Begin by configuring the mount in the alt-azimuth mode. Note that dual OTA usage in the equatorial mode is not possible, as the second OTA will not clear the tripod leg.

1Lock the RA and DEC clutches (Page 8, Fig 1, 29 and 30) so the primary optical tube is stationary.

2.Before beginning the next step it is advised to enlist the help of a second individual to steady the primary OTA. Both the counterweight and/or sections of the counterweight shaft may be removed and doing so will unbalance the telescope. Having someone steady the mount while this is being done will ensure that the un-weighted mount will not tip over. While being steadied by a second individual, carefully unscrew and remove the counterweight safety nut and counterweight shaft(s), leaving only the first section of the counterweight shaft attached.

3.Locate the included secondary dovetail adapter (Fig 38). Note the adapters’ two hex head attaching screws. Inspect the adapter mounting hole and verify the attaching screws are sufficiently screwed back allowing it to fit onto the counterweight shaft. You may need to back the attaching screws out using the LX80 tool if necessary. Next slip the dovetail adapter onto the counterweight shaft. Position the dovetail adapter all the way onto the shaft so the attaching screws tighten into the recessed channel at the end of the counterweight shaft. Position the secondary adapter so it is at the same angle as the primary OTA dovetail adapter and tighten to a “snug” fit using the LX80 tool.

Fig 38: Secondary mount plate

4.Mount the secondary OTA, sliding its dovetail into the secondary dovetail adapter and secure by tightening the two dovetail lock knobs.

5At this point you will need to balance the two OTAs. Refer back to the section “Balancing the OTA” on Page 19 for steps balancing in both DEC and RA axis. Note that to achieve a balance in the RA axis you may need to add additional counterweights and or add extensions to the counterweight shaft. Adding additional counterweight shafts moves the secondary OTAs mass out further which will give it greater counter leverage against the primary OTA.

Balancing the OTAs is especially important when using the LX80 in the dual OTA mode due to the higher weight capacity. A balanced telescope in both the DEC and RA minimizes strain on motors, gearbox and delivers smoothest operation, increasing battery life.

The LX80 Multi-Mount System

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Meade LX80 instruction manual Dual OTA Mode, Dual OTA Alt-Az, Secondary mount plate
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LX80 specifications

The Meade LX80 is a versatile and innovative telescope designed to cater to both novice astronomers and experienced stargazers. Its combination of performance, ease of use, and advanced features makes it a popular choice among enthusiasts seeking to explore the cosmos.

One of the standout characteristics of the LX80 is its extensive GoTo mount system, which allows users to automatically locate and track celestial objects with remarkable precision. This feature is powered by a database containing over 30,000 astronomical objects, providing a broad range of targets for exploration. The telescope's integrated GPS ensures swift alignment with the night sky, simplifying setup and enhancing the observing experience.

The LX80 employs advanced technology with its heavy-duty dual-axis equatorial mount, providing stability and sturdiness. This design is particularly beneficial for astrophotography, as it minimizes vibrations and allows for longer exposure times without blurring. Additionally, the mount is compatible with various optical tubes, enabling users to customize their setup according to their specific interests, whether it’s planetary observation or deep-sky photography.

Another impressive feature of the Meade LX80 is its SmartDrive technology, which continually corrects any tracking errors, ensuring smooth and accurate movement across the night sky. This is especially helpful for capturing high-quality images of celestial bodies. The telescope can also be controlled via a smartphone or tablet using the optional Meade app, which further adds to its user-friendly design.

The LX80's optical performance is equally commendable. Many models come with a high-quality optical tube, offering superb light-gathering capabilities. The telescope's aperture, typically ranging from 6 to 10 inches, makes it well-suited for observing faint deep-sky objects like galaxies and nebulae, as well as brighter targets such as planets.

In terms of portability, the LX80 is designed to be compact, making it easier to transport to dark-sky locations. The telescope can be quickly set up and dismantled, accommodating astronomers who wish to observe in various settings.

Overall, the Meade LX80 stands out as a dynamic and feature-rich telescope. With its powerful GoTo capabilities, advanced tracking technology, and customizable optics, it offers a well-rounded observational experience. Whether you're peering through the eyepiece for the first time or capturing stunning images of the universe, the LX80 is equipped to meet your astronomical needs.
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