Marco van der List

With my previous EQ-5 I reduced the maximum slew rate in ASCOM/EQMOD as well. That mount was on the small size for a 200 Newton, so driving it at full speed yielded similar noise problems. Upon your recommendation I did a test this morning with a lower slew rate in ASCOM (540 instead of the maximum 800). Noise goes indeed considerably down, but the noise from the mount is notatbly different than from before. I also ran the mount at max and lower slow speeds without the scope and counterweights and that seems to have a small improvement (logical since there is less inertia to push around by the motors). It seems to be a combination on how the stepper motors are driven in 3.07 and the resonances in the system (so may also be a bit dependent on the scope used). In the change log it is stated that since 3.04 the current at low speeds was reduced. This is obviously done to save the batteries in the field, but since I use the EQ6-R solely around the house, I use a wall outlet. So less relevant for me. However, based on the suggestion above, I managed to download the older firmware driver from the SkyWatcher site: https://inter-static.skywatcher.com/downloads/mc015_firmware_0303.zip (thanks for the suggestion, sometimes the solution is more simple than you think!) I have successfully installed the iss. 3.03 firmware, and the mount is now running back in its original super-silent mode! It was the low noise levels, which really impressed me during the unboxing process (and which I like to show off to fellow backyard astronomers in the area). For your info: on the SynScan I am running the most recent 4.39.10 firmware.

Hello everybody, This is my first post to this forum. Since end of last year I am a proud owner of an EQ6-R Pro mount (version with internal USB port), and use it both visually and for astrophotography. I came to this page but a websearch on an issue I have with the Motor Control Firmware. Recently I updated to the 3.07 version, and I notice that the telescope mount is much more noisy when slewing over large angles (e.g. from park position to an alignment star near the equator). As I live in a residential area, I really appreciated the quiteness of the mount as it came out of the box. It is said it is easy to downgrade the motor controller firmware. I don't doubt that, for one little problem: I cannot find an older firmware version on the SkyWatcher website (!) I asked them about a week ago, but so far not yet a response. Perhaps anyone can help me where to find an older motor controller firmware for the EQ6-R Pro with internal USB port? Much appreciated in advance! Regards, Marco van der List Rijsbergen (NL) www.vanderlist.nl