5.4.7. Set Backlash Value

Set the backlash of R.A axis and DEC axis. Although both R.A. and DEC worms have gap-free structure, there still might be backlash or play between the reducing gears of a R.A. or DEC motor.

To set the backlash value, scroll down and select “Set Backlash Value”

Set up Local Time

Set up Observ. site

Set N/S hemisphere

Set display contrast

Set Eyepiece light

Set Backlight

Set Backlash Value

Set Key Beep

Press ENTER. A R.A. anti-backlash screen will display:

R.A. anti-backlash:

0000 steps

To adjust steps move the cursor to each digit and use the number keys to input number directly. It is about 0.10 arc seconds per step for R.A. backlash. Press ENTER – “DEC anti-backlash” will display:

DEC anti-backlash:

0000 steps

Move the cursor to each digit and use the number keys to set the anti-backlash. It is about 0.12 arc seconds per step for DEC backlash. Press ENTER to go back the previous screen. Press BACK button to go back to main menu.

While viewing an object in the eyepiece, observe the responsiveness of each of the four arrow buttons. Note which directions you see a pause in the star movement after the button has been pressed. Working one axis at a time, adjust the backlash settings high enough to cause immediate movement without resulting in a pronounced jump when pressing or releasing the button. The hand controller will remember these values and use them each time it is turned on until they are changed.

5.4.8. Set Key Beep

Turn the key beep on/off.

5.4.9. Reset All

Reset all settings to factory default data.

5.4.10. Meridian Protection

The Meridian Flip can be turn on or off. If the Meridian Flip is turned off, there are two more options: Meridian Protection ON or OFF.

24

Page 23 Page 25
Page 24
Image 24
iOptron IEQ75-GTTM instruction manual Set Backlash Value, Set Key Beep, Reset All, Meridian Protection
Page 23 Page 25

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.
Top Page Image Contents