In its initial version, the TG-SP3 can support light OTAs, like FS-60 type. If you wish to carry heavier telescope OTA, up to 3 kg, it is strongly recommended to equip Teegul with a counterweight (and counterweight shaft), in order to balance the assembly perfectly and not to force on the drive motor. Moreover, this new configuration makes it possible to obtain a better clearance on both axes, in particular to reach the zenith point.