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

Read More...