What is the main advantage of the iOptron CEM26's Center-Balanced design?
It carries a 26 lb payload on a mount head that weighs 10 lbs, by placing the telescope's weight over the tripod.
What is the difference between the iOptron CEM26 and the CEM26EC?
The key difference is tracking accuracy. The standard CEM26 has a periodic error of <±12 arcseconds and uses Permanent Periodic Error Correction (PPEC). The CEM26EC version includes a high-resolution RA encoder that provides Real-time Periodic Error Correction (RPEC), for a periodic error of <0.3 arcsec rms.
Can I control the iOptron CEM26 mount with my smartphone or tablet?
Yes. The iOptron CEM26 has built-in Wi-Fi, allowing you to connect to the mount wirelessly. The mount can be controlled from a smartphone, tablet or computer, wirelessly or by USB: through ASCOM (with the iOptron Commander/ASCOM driver) on Windows, or directly by software such as SkySafari on Mac OS.
What is the difference between the AccuAlign and iPolar options for the CEM26?
The iOptron CEM26 is available with two different polar alignment tools.
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AccuAlign™: This is a dark-field optical polar scope that you look through; it is not blocked by the DEC axle.
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iPolar™: This is an integrated electronic polar scope (a small camera) that connects to a computer via USB. It ensures accurate alignment even when the pole star is obscured.
Can I use the iOptron CEM26 near the equator?
Yes. The CEM26 has a latitude adjustment range of 0º to 60º. Below 10º, iOptron uses a low-latitude counterweight shaft mounting (#C26-CWSML) so the counterweight does not bump into the tripod leg.
Do I need a computer to use the iOptron CEM26's GoTo system?
No. The included Go2Nova® 8409 hand controller works on its own, with a database of ~212,000 objects. You can perform alignment, find objects, and control all mount functions using only the hand controller. A computer or smart device is optional for advanced control via the USB port or built-in Wi-Fi.
What kind of power supply does the iOptron CEM26 need in the field?
The CEM26 requires a 12V DC, 5A power source. An AC adapter (100V ~ 240V, indoor use only) is included. Power consumption is 0.5A while tracking and 0.8A during GoTo.
My GoTo accuracy on the iOptron CEM26 is off. What is the first thing to check?
Always check the Zero Position when the mount is powered on. Before starting your session, ensure the mount is physically at its Zero Position (counterweight shaft pointing to the ground, telescope on top pointing towards the celestial pole). Then, in the hand controller, use the "Goto Zero Position" command to confirm. If it's not correct, use "Set Zero Position". After that, do a "One Star Align" to correct any pointing discrepancy of the Zero Position and improve GoTo accuracy.
