Duncan, you don't need to do a 2 star align. Most folks do a "quick align" with the HC before moving to Ekos control (which pretty much does nothing....in place alignment for time in HC). Afterwards, do a drift align or other polar align method (your choice) in Ekos. This will save time. If you continue to struggle with Ekos guiding, you might try PHD2 guiding to see if you can break through there. If so, then look closer at your guiding setup parameters to see if you've got something askew. Good luck....

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The USB3 powered hub I used is here:
www.amazon.com/gp/product/B00SIQIV04
I do power the hub from the PPB; works great. I did do some soldering to shorten some of my cables for a nice clean fit (when I couldn't find short cables to purchase).
About the RASA, it's a really decent wide field scope, but I designed it for narrow field by clipping the wavelength (Hoya UV/IR filter), and then pairing with a small pixel field and smaller chip (intentional to keep off-axis distance small). I probably should have gone with an ASI294 (didn't know about "unlocked mode"), but I did go with an ASI183mcPro & 2.4um pixels. That makes for reasonably nice images and platescale of 0.799 arcsecs/pix. See here for example images I've captured with the RASA:
www.astrobin.com/users/dmsummers/
Good luck with your cable management & new EAF focuser; I'm really happy with my EAF. BTW, expect about 90 steps of backlash for the EAF.
Cheers, Doug

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Hi Hank, Actually I found that by adding a powered USB3 hub, I was able to simplify cable management. Only 1 cable to the Pi4, the rest to the hub and devices (includes 2 ASI cams, an EAF focuser, and Pegasus PPB. I think you'd be pushing the Pi4's power to run both your cams, the filter wheel and new EAF, but I don't know. The USB3 hub has been thoroughly vetted by many users, and is a sure bet. Cheers, Doug

 



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Doug S replied to the topic 'RPI4 keeps losing wifi connection' in the forum. 3 weeks ago

Hi Rene, You could easily be suffering from a couple issues. The first and most likely is USB vs 2.4Ghz wireless interference (search for this and you'll find a related post/thread). The second issue is less likely but I thought I'd comment that you are putting pressure on your PI's power supply by running all 4 USB connections on the PI4 (if I read that right from your OP). You would be well served to get a powered USB hub for your devices and then only connect the Hub to the PI's USB 3 port. That way, there will be no doubt that the power adapter for the PI4 will only service the PI and not need to supply power to USB devices. The symptoms you describe are exactly what I describe in the post about 2.4Ghz WIFI interference with USB3. Finally, when the PI4 disconnects (until fixed), you should wait for about 1-2 minutes and check to see if you can reconnect via the hotspot (10.250.250.1). That may let you connect & gracefully shutdown/disconnect via VNC. Until this is fully resolved, I hope it's obvious that you need a backup of your SD or SSD so you don't have to start completely over if unexpected power off sequences scramble your config! Cheers, Doug S.

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Jack Bakeman is friends with Doug S

Doug S replied to the topic 'Tips for Auto-Focus' in the forum. 1 month ago

Hi Peter, I'm working behind the scenes with a few folks to see if progress can't be made to fix this for the benefit of everyone. Stay tuned.... cheers, Doug

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