SPECIFICATIONS

Brand Name: Astroasis

High-concerned chemical: None

Type: Binoculars

Oasis Focuser Rose is the second generation of the Astroasis electronic focuser. On the basis of the first generation, the second generation has made important improvements and is a perfect electronic focuser for astrophotography.

Compared with the first generation, the second generation has made the following improvements:

1、Convenient power supply — It can be powered by either the USB Type-C port or the 12V DC port.2、Stall detection— Motor stall detection feature prevents the telescope focuser and the gears from being damaged in case the telescope focuser moves out of the minimum or maximum range or in other cases that are not expected.

3、Built-in heating module — The built-in heating module allows the focuser to work in low ambient temperature conditions for North China, Europe, North America users when capturing in winters. The heating module can be controlled at a constant temperature when heating so it's easy to use.

4、Gear locator— The gear locator helps user to install the gear in the right place.

Gear Locator

5、Improved reliability — Motor is upgraded to improve reliability. PCB is re-desigened to improve reliability of power module, USB/DC/Temperature sockets etc.

6、Better connection method — The connection method of the fixed-part and the rotationable part is improved. The connection of the fixed-part and the rotationable part is more stable.

7、More compact dimensions — Compared to the first generation, the second generation Oasis focuser body has a 14.5mm reduction in the length and a 4mm reduction in the diameter of the rotationable part.

Old version VS new version

Dimensions of Oasis Focuser Rose

Oasis Focuser Rose inherits all the excellent features of the first generation Oasis Focuser, including:

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

High precision — Micron precision for each motor step

Ability to drive heavy load — Testing indicates that it can driver net loads more than 5Kg

Excellent backlash compensation performance — Gears and rigid components provide excellent backlash compensation performance

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 compact focuser body

Shopping Guide:

An important feature of the Oasis Focuser is that the main assembly and the clamp are separated. By using different clamps Oasis Focuser can be installed on a variety of telescopes. Not only can it be installed directly with a clamp, but it can also be installed on various models of telescope focusers via customized adapters.

For the telescopes/focusers in the table below, Oasis Focuser Rose can be installed with a clamp or a clamp plus a gasket. This installation method is very simple. Please order the corresponding option according to your telescopes/focusers.

Please contact us if your telescope is not in the supported-telescope list.

Installation:

For the above telescopes/focusers, the installation method is very simple. Please refer to the User Manual and Installation Reference Manual at the following address:

1. https://www.astroasis.com/download/files/focuser/Oasis_Focuser_User_Manual_EN.pdf

2.https://www.astroasis.com/download/files/focuser/Oasis_Focuser_Installation_Reference_Manual_EN.pdf

Product Pictures：

Here are some pictures of Oasis Focuser Rose:

Auto-focus curve graphs:

Oasis Focuser uses gears instead of coupling and has good rigidity, which helps to achieve excellent backlash compensation performance and focusing accuracy. On most telescopes, each motor step moves less than 1μm distance and has high precision.

Here are graphs of the auto-focus curve we got by running 12 consecutive auto-focus sessions using NINA. The telescope used is SkyRover 102 APO Pro. As we can see the focus positions after each auto-focus are very close, with the minimum position being 39582 and the maximum position being 39593. On the SkyRover 102 APO, the moving distance of each motor step is 0.8μm. So the maximum position deviation between each of the 12 consecutive auto-focus is less than 9μm. All the hyperbolic fitting coefficient of determination (R2) are above 0.99, indicating that the focusing results have high stability and accuracy.

Please note:

Many factors may impact the auto-focus result, such as wind, seeing, and the auto-focus parameter settings etc. In order to get good auto-focus results like the ones shown above, we need to do many things right.

Here are more pictures from users.