astrotad

On the focuser are two 200mm GT2 belts each 10mm wide. I used some 80mm x 9mm rubber bands to hold the belts in place on the focuser.

Then driving the focuser is a 300mm GT2 6mm wide belt, and a 20 teeth GT2 pulley with 5mm bore hole.

Took me a few attempts to get the right belt sizes and spacing from the EAF, but have used several times and works well.

All purchased on Amazon and eBay. Let me know if you need anymore details.

More photos of the setup. The Evoguide is great as a wide field setup.

This is my setup for the Evoguide with the ZWO EAF

The OTA was horizonal when this happened, so thankfully the ring didn't drop onto the mirror. I've ordered some Allen keys as couldn't find the right size needed for the grub screws holding the corrector plate, once they arrive I'll attempt removing. Thanks.

I purchased a Celestron Edge HD 8 OTA from a UK retailer in November 2021.

I have recently been using this with a Starizona Hyperstar 4. Last week when I went to remove the Hyperstar to replace the secondary mirror, rather than the Hyperstar unscrewing the internal thread of the secondary mirror holder unscrewed from the corrector plate. When I tried to re-screw in the secondary mirror thread, the internal thread from behind the corrector plate fell off. Please see photos attached. I had been using a Celestron dew heater ring, which I have removed for some of the photos.

Celestron have said this isn't covered by warranty, so looks like I'll need to repair. Any advice on how to repair? I know I should be able to remove the corrector plate, being careful to mark orientation, but wondering whether I should glue the connector back, or just screw it in?

I contacted ZWO support yesterday and they responded with 

Quote

Please reset the 0 position and the max steps(60000) and test it in ASIStudio.

I did this and now the focuser is working correctly again 😀

15 minutes ago, iwols said:

any use?

https://www.cloudynights.com/topic/760292-zwo-eaf-double-beep-stop/

I saw this and initially thought that the focus system maybe to tight, but the focuser doesn't move at all just beeps. I've even complete disconnected it and it still doesn't move. The focus system is moving fine with my old SkyWatcher AF.

15 minutes ago, iwols said:

No i havent have you tried contacting zwo,also try a new setup on a different laptop computer apart from that dont have any suggestions,sorry

Thanks, already tried on a different computer, with a different cable and same outcome. Even tried updating to the latest firmware.

A couple of weeks ago I ordered the ZWO EAF, and once it had arrived I successfully set up on my telescope and all was working well for a few nights. However last night I couldn’t get the ZWO EAF to work. It connects successfully to my computer but every time I try to move it beeps a few times and doesn’t move.

I’ve tried completely disconnecting the EAF from my telescope, using a different USB cable and even tried on a separate computer but still it just beeps and doesn’t move. I get the same result through the ZWO ASISudio software and via the ASCOM interface.

I have looked online but can’t find any information on why its beeping. Therefore I'm thinking it may be a hardware issue. Has anyone else experienced the same issues?