Focuser Boss II with Posi Drive motor vs Robo Focus
I get asked a lot to compare our products vs another manufactured product. As an employee of Starlight Instruments which is the manufacture of the Feather Touch focusers, of course I am a little biased. For this reason I contacted 2 astronomers and let them test and compare the Focuser Boss II with PDMS motor and the Robo Focus. Below are their comments:
The Posi Drive has
- Low backlash makes for more repeatable focuser positions, which leads to more accurate autofocus.
- Higher quality components.
- More torque/carrying capacity means less slippage with heavy cameras or high targets… see #1 for implications.
- Robofocus is still a 9-pin serial solution, if you want USB/Ethernet/WiFi they need the Focuser Boss II
Your primary market was making a better focuser, but the automation solutions weren’t the same quality as your focuser , so you designed an electronics solution to go with a motorized option which now gives the astronomer the best of both worlds.
Below is the comment from the 2nd astronomer:
No slipping! Smoother operation. Easier to disengage for visual or manual focus. No serial cable or adapter to use. Better control software.
And a big plus particularly is the built in temperature readout and temperature compensation which is very useful for the slow to cool telescopes.
I currently use the Posi on a TEC140, AT 10” RC, and soon my Epsilon 160. All which had the robofocus before.
If interested, please feel free to contact me regarding other manufactured comparisons to products from Starlight Instruments.