RST-135E: The best harmonic drive mount money can buy?

After a year with the Rainbow Astro RST-135E, how does it stack up? Find out what it's guiding capabilities and performance are like, if it's able to go unguided and what my two annoyances are with it. Rainbow Astro RST-135E Initial Impressions:    • Harmonic Drive Mount Review - Rainbow Astr...   Support this channel:   / astrowithroro   Timestamps: 0:00 Intro 2:00 General Thoughts 3:15 Guiding Performance 5:30 Periodic Error 6:50 Unguided Performance 7:40 Backlash & PHD2 Settings 8:24 Windows Bug 9:05 Altitude Lock 9:45 Is It Worth $10,000? Patreon:   / astrowithroro   Public Events: https://www.astrowithroro.com Facebook:   / astrowithroro   Instagram:   / astrowithroro