iOptron IEQ75-GTTM instruction manual PEC Option, Set Up Tracking, Auto Guide

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5.5.3. Dis R.A axis error

This displays the celestial pole pointing error after two star or three star alignment. When the HC shows for example:

7.5" lower 4.3" east,

it means the polar axis of the mount is pointing lower and to the east. Pointing error is zero when the mount is powered on (unless you “Park Telescope” before powering off).

5.5.4. Polaris Position

This shows Polaris position in the polar scope and is used for Quick Polar Alignment.

5.6. PEC Option

iEQ75-GT uses automatic real time periodic error correction technique with a Renishaw high resolution optical encoder.

5.7. Set Up Tracking

You can set up tracking in the main menu by selecting “Set up tracking”. Then the user can select “Solar speed”, “Lunar speed”, “Sidereal speed” and “User defined speed”. For “User defined speed,” it can be adjusted from 0.9900X to 1.0100X of sidereal speed by pressing the ▲or ▼ button or number buttons.

5.8. Auto Guide

5.8.1. Set Guider Rate

This is an advanced function for autoguiding when a guiding camera is equipped either via an ST-4 guiding port or an ASCOM protocol. Before autoguiding, align the polar axis carefully. Press MENU and select Auto Guide and press ENTER. Select a proper guiding speed. The suppositional guiding speed can be selected from 0.10X to 1.00X. Follow the autoguiding software for detailed operation.

5.8.2. Set Guider Direction

The Guide Port iEQ75-GT equipped is capable to handle an ST-4 autoguiding camera with both straight and a reverse wired RJ-11 guiding cable. Select “Reverse” option in the “Auto Guide” function for an ST-4 camera with a reversed RJ-11 guiding cable, as shown in Figure 21.

Figure 21

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Contents SmartStar iEQ75-GTTM Table of Content Ioptron TWO Year TELESCOPE, MOUNT, and Controller Warranty Features IEQ75-GTTMOverviewIEQ75-GTTMAssembly Parts List1Counterweights and CW shaft Assembly terms IEQ75-GT assembly terms mount and optional tripodIEQ75-GTTMPorts IntroductionIEQ75-GT Assembly Setup TripodConnect Cables Polar axis adjustments Initializing the polar scope Attach Dovetail Adapter Balance the mount in R.A. and DEC axes DEC Balance Test GoToNova 8406 Hand Controller Key DescriptionLCD Screen HC LCD Information ScreenSet Up Local Time Setup the Mount and Polar AlignmentSetting Up the Hand Controller Getting StartedSet Up Observation Site Scroll down and select Set up Observ. siteGo to the Moon Set N/S HemisphereInitial Star Alignment Turn Off the Mount Complete Functions of GoToNova Hand Controller Slew to an ObjectElectric Focuser Set Up ControllerSync to Target Set Key Beep Reset AllSet Backlash Value Meridian ProtectionAlign Auto Guide Set Up TrackingPEC Option Park Scope Park ScopeTo Zero Position Set Park PositionIOptron Customer Service Maintenance and ServicingMaintenance Battery Replacement and Disposal InstructionsAppendix A. Technical Specifications GPSAppendix B. GoToNova 8406 HC Menu Structure Page Appendix C. Firmware Upgrade To upgrade i8406 hand controller firmwareAppendix D. Use a PC to Control an iEQ75-GT Mount Appendix E. GoToNova Star List Messier CatalogGoToNova Named Star List Modern Constellations GoToNova Deep Sky Object List GoToNova Double Star List SAO Atik Ioptron TWO Year TELESCOPE, MOUNT, and Controller Warranty

IEQ75-GTTM specifications

The iOptron IEQ75-GT is an advanced equatorial mount designed for amateur astronomers and astrophotographers seeking precision and reliability in their observations. This mount stands out due to its robust construction and innovative technology, making it ideal for a wide range of astronomical applications.

One of the main features of the IEQ75-GT is its impressive payload capacity. With the ability to support up to 75 pounds, it can easily accommodate a variety of telescopes and imaging setups, enabling users to explore both deep-sky objects and planetary details. The mount’s solid aluminum construction ensures stability, which is critical for long exposure astrophotography.

The IEQ75-GT is equipped with iOptron's signature GoTo system, allowing for easy navigation across the night sky. With its celestial database that includes over 200,000 objects, users can effortlessly locate and track their desired targets. The advanced GoTo technology also includes a built-in GPS, simplifying the alignment process and providing precise location data for better tracking.

Another notable feature is the mount's dual-axis tracking, which ensures that celestial objects remain in view, even during long exposure imaging sessions. The high-resolution encoders and closed-loop servo motors provide smooth movement and accurate tracking, reducing the risk of star trailing during exposures.

The mount is designed with portability in mind. Its compact size and lightweight construction make it easy to transport, making it a great choice for both backyard observations and remote dark-sky outings. The quick-release system allows for fast setup and teardown, enhancing convenience during stargazing sessions.

iOptron also incorporates unique smart technology in the IEQ75-GT. The mount is compatible with a range of mobile applications, allowing users to control the mount and access additional features directly from their phones or tablets. This level of integration enhances the observing experience and makes it easier to explore the night sky.

Additionally, the IEQ75-GT features a built-in autoguider interface, facilitating long-exposure astrophotography without the need for additional guiding equipment. The mount’s versatility and user-friendly design make it an excellent choice for both novice and experienced astronomers.

In summary, the iOptron IEQ75-GT combines high payload capacity, advanced GoTo technology, sturdy construction, and smart features to deliver a powerful astronomical platform. Whether you're passionate about stargazing or astrophotography, the IEQ75-GT is a worthy investment for any astronomy enthusiast, providing the reliability and precision needed for a successful observing experience.
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