RA Enc. ERR, DEC Enc. ERR is raised.
The causes of ENC err are as follows: When the input voltage is low RST mount uses a voltage of
The mount does not move when the arrow keys on the hand controller are pressed.
There are two reasons why the mount does not move when you press the arrow key on the hand controller.
Ascom driver does not connect with the mount.
If the Ascom driver and the mount do not connect, check the following. 1. When connecting with a USB cable
How big periodic errors of RST-135 is?
Strain wave gear has a large periodic error compared to worm gear. The main reason is the small pitch circle of the gear. We don't make an announcement or guarantee the figure about periodic error of RST-135. However, it has a periodic error about +-30 arcsec in a 430 seconds cycle. Thus the auto guide is needed for a photography, and unguided photography is possible using a short
Which tripod is compatible with RST-135?
Because the RST-135 is emphasized the portability, we recommend the carbon tripod which has light weight and strength. The RST-135 includes an adapter with 3/8'' tap for install the mount on tripod for the camera. Also, you can prevent of telescope collision with camera if you bought a half-pier separately. The listed product is carbon tripod we recommend. SuperMount Act series Gitzo systematic 5 series Gitzo systematic 4 series Gitzo systematic 3 series Photoclam Astro tripod K-Astec PTP-C22 Leofoto LN-404C Xiletu L-404C Innorel RT90C
When will PEC function be added to RST-135?
RST-135 does not have PEC(Periodic Error Correction) function yet. Strain wave gear has slightly different characteristics compared to worm gear in terms of periodic error. Worm gears has good repeatability of periodic errors, while strain wave gear has the characteristic that the magnitude of periodic error varies depending on the weight of load. In other words, periodic error depends on loaded equipment or direction of the telescope. In this reason, it is difficult to apply the PEC function. However, we making an effort to development of PEC. We will update it if there is further research or development. 2019.11.21