Oasis Focuser is an electronic focuser with clutch mechanism, designed for astronomical observation and astrophotographers. It also has some other excellent features.
Clutch function — Easy and fast switching between motor and manual focusing
Bluetooth function — Mobile devices such as mobile phones can be used to control the focuser via Bluetooth
Small size — Round appearance with small size
High precision — Micron precision for each motor step
Ability to drive heavy load — Testing indicates that it can driver net loads more than 5Kg
Small backlash — Carefully selected motor model and product design results in small backlash
Easy to install — Easy to install or uninstall focuser body. Only one screw needs to be used to install or uninstall focuser body. And it can be installed on many telescope focusers
High integrated — Except for the ambient temperature probe, all functions and components (including motor, controller board etc.) are implemented and integrated in the single small-sized focuser body
In addition, this product has the following features:
- Support ASCOM interface
- Support USB HID device interface, driver-free for Windows operation system.
- Has two temperature sensors, one monitors board temperature, the other monitors ambient temperature
- Support backlash compensation
- Support electronic auto-focusing
- Has beep generator for tips or alarms
This product features the use of two gears instead of coupling as driving parts. One of the gears is installed on the shaft of the telescope focuser, and the other is installed on the shaft of the motor. By holding the rear end of the Oasis Focuser and turning it, the two gears can be separated or meshed.
The clutch of this product is self-locking. In most cases, as long as the Oasis Focuser is switched to ON or OFF state, it can be kept in meshing or locking state without other operations. It is very convenient to use in this way. In addition, a locking screw is provided to ensure that the focuser will always be in a stable state when it needs to work in a certain state for a long period of time. For example, it can be used when the equipment works in a remote observation station and the focuser needs to be in engaged state for a long time.
Users can use mobile devices such as mobile phone to connect Oasis Focuser via Bluetooth. Once connected, users can use mobile device to do operations such as focusing, firmware upgrading etc on Oasis Focuser.
Small size and large driving ability
Oasis focuser uses a small diameter and high reduction ratio stepper motor made by NPM motor company from Japan. It can drive a large load on the basis of having a delicate and compact appearance. Testing on a Sharpstar 107PH telescope indicates that this product is capable of steadily driving a net load of more than 5 kg.
The higher reduction ratio means more steps and higher focusing resolution when do focusing. We did some tests and found that on the Starfield ED102 APO Pro it takes about 125 steps per 0.1mm focusing distance, while on the Sharpstar 107PH it takes about 159 steps per 0.1mm focusing distance. On both telescopes the focusing distance of each step is less than 1 micron.