Astroasis Oasis Focuser Installation & Reference Manual

Clutch electronic focuser

Hide thumbs Also See for Oasis Focuser:

User manual (25 pages)

Table Of Contents

Table of Contents

Quick Links

Download this manual

Suzhou Astroasis Vision Technology Co., Ltd.

Ver 2.7

Oasis Focuser

Clutch Electronic Focuser

Installation Reference Manual

Version 2.7

2025.03.30

Suzhou Astroasis Vision Technology Co., Ltd.

https://www.astroasis.com/en

We dedicate to providing high quality products and services for amateurs of astronomical observation and

photograph

Table of Contents

Need help?

Do you have a question about the Oasis Focuser and is the answer not in the manual?

Questions and answers

Summary of Contents for Astroasis Oasis Focuser

Page 1 Suzhou Astroasis Vision Technology Co., Ltd. Ver 2.7 Oasis Focuser Clutch Electronic Focuser Installation Reference Manual Version 2.7 2025.03.30 Suzhou Astroasis Vision Technology Co., Ltd. https://www.astroasis.com/en We dedicate to providing high quality products and services for amateurs of astronomical observation and...
Page 2: Table Of Contents
8. Installation with dedicated adapters ........................... 64 8.1. Installation on Skywatcher Newtonian dual-speed focuser ................64 8.2. Adapter for new 2047 2-inch/3.5-inch Focuser ....................67 8.3. Adapter for FeatherTouch FTF3515/3545 ......................70 Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 3: Quick Guidance
Coarse-tuning Meade SolarMax III 70DS Coronado SolarMax III 90mm MEYON 80ED Stellarvue FSV-3B SkyRover 70/80/90/102/130APO Starfield APO William Optics 10” RC Coarse-tuning Apertura 60EDR/72EDR/90APO TS-Optics Photoline 72 Askar 107PHQ/120APO/130PHQ/151PHQ Coarse-tuning Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 4 Suzhou Astroasis Vision Technology Co., Ltd. Ver 2.7 Askar 71F Sharpstar Z4 Note: 1. To install Oasis focuser, a 4mm gasket is required for the following telescopes: Askar SQA70 Askar SQA85 Askar 107PHQ Askar 120APO Askar 130PHQ Askar 151PHQ Sharpstar RP30S...
Page 5 Gear Rabbit-Head Clamp Installation Takahashi FSQ106/TOA130-NFB APO Fine-tuning A3.5 25mm FeatherTouch FTF20 series Fine-tuning A2.85 1.00inch 6. Installation on helical-focusing telescopes Telescope/Focuser Installation Askar ACL200 William Optics RedCat51 APO SQA55 Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 6 7. Dedicated installation Telescope/Focuser Installation Position Gear Clamp Installation Skywatcher Newtonian dual-speed focuser Coarse-tuning 28mm 2047 2-inch Focuser Coarse-tuning 30mm 2047 3.5-inch Focuser Coarse-tuning 30mm Feather Touch FTF3515/3545 Fine-tuning 1.46inch Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 7: Brief Description Of Installation
1.3. Specification of gears Oasis Focuser uses gears to drive focuser. One of the gears is pre-installed on the shaft of the motor, and another large gear needs to be installed by the user on the shaft of the telescope focuser. The gears mentioned below in this document are always the large gears that need to be installed by the user.
Page 8: Installation Position Of The Gear And The Gear Locator
1.4.1. Installation position of the gear Whether the large gear is installed in the correct position is very important for whether Oasis Focuser is installed correctly. Oasis Focuser components have been designed carefully to make it easy for users to install the gears correctly.
Page 10: How To Use The Gear Locator
1.4.2. How to use the gear locator Starting with Oasis Focuser Rose, we offer a small tool, the Gear Locator, to help users determine where the gear should be installed. Here are descriptions about how to use the gear locator: 1、...
Page 12 Oasis Focuser body, the Oasis Focuser body also needs to move outward for the corresponding distance. This is achieved by adding a special gasket (Figure 1-13) between the clamp and the Oasis Focuser body, as shown in Figure 1-14 and 1-15.
Page 13 2、 Put the gear on the focusing shaft. Do not tighten the gear on the focusing shaft by using screws at this time. Put the clamp on the focuser housing and tighten it with the screw, as shown in Figure 1-17. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 14 ±0.5mm. Figure 1-18 4、 Remove the gear locator from the clamp. After the gear is installed, the gear locator does not need to be used again. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 15: Summary Of Installation Methods
1.5. Summary of installation methods For some telescope focusers Oasis Focuser cannot be installed directly with a clamp. We designed several adapters for them to solve this problem. By using these adapters, Oasis Focuser can be installed on most telescope focusers.
Page 16 Oasis Focuser can be installed on Celestron 8SE/C8/C925/C11/C14 and its HD version Schmidt-Cassegrain telescopes (SCT) by using dedicated adapters. Figure 1-21 is the adapter for installing Oasis Focuser on Celestron 8SE/C8/C925. Figure 1-22 illustrates what it looks like when Oasis focuser is installed on a Celestron C14HD.
Page 17 Figure 1-23 4、 Installation with binary gasket Usually this installation method is used to install Oasis Focuser on fine-tuning side of telescope focuser, however the principle can also be used for some special installation cases. For telescope focusers that cannot be installed on coarse-tuning side while they have a dual-speed knob,...
Page 18 Suzhou Astroasis Vision Technology Co., Ltd. Ver 2.7 Oasis Focuser can be installed on the fine-tuning side (Figure 1-24). With our innovative binary gasket, Oasis Focuser can be installed on a variety of dual-speed knob side with great flexibility. The binary gasket is shown in Figure 1-25.
Page 19 Figure 1-26 6、 Installation on helical-focusing telescopes This installation method is used to install Oasis Focuser on telescopes with helical-focusing system such as William Optics RedCat 51 APO and Askar ACL200, as shown in Figures 1-27 and 1-28. Figure 1-27 Figure 1-28 Copyright 2025 Suzhou Astroasis Vision Technology, Inc.
Page 20 Ver 2.7 7、 Installation with dedicated adapters For some particular telescope focusers, we designed special adapters for Oasis Focuser installation. An example is the adapter for 2047 2" focuser as shown in Figure 1-29. Figure 1-29 Adapter for 2047 2-inch focuser Another example is the adapter for FeatherTouch FTF35 series focusers as shown in Figure 1-30.
Page 21: Simplest Installation
2. Simplest installation With this installation method Oasis Focuser can be installed on telescope focusers directly by using a clamp. Since this method does not need to use any adapters, the installation method is very simple. So it is called the simplest installation.
Page 22: Detailed Installation Steps
Normally telescope focuser has a single-speed knob (i.e., coarse-turning knob) at one end and a dual- speed knob at the other end. Usually, Oasis Focuser can be installed at the single-speed side. In this case please remove the single-speed knob as shown in Figure 2-1.
Page 23 The B-type gear has 3 setscrew threaded holes, two of which are reserved. Only one of them is required for installation. Users can also use 2 or 3 setscrews in case they can be installed on the shaft or when it is needed. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 25 This is achieved by adding a special gasket (Figure 2-13) between the clamp and the Oasis Focuser body, as shown in Figure 2-14 and 2-15. The distance the gear moves outward is equal to the thickness of the gasket.
Page 26 3、 Tighten the clamp Oasis focuser main assembly can be connected to telescope focuser housing by using a clamp. A small step is designed on the inner hole of the clamp to help user determine where the clamp should be installed on focuser housing, as shown in Figure 2-16.
Page 27 Figure 2-16 Figure 2-17 When installing, use 3 screws to connect the clamp and oasis focuser main assembly. Then, hold the front end of oasis focuser body in your left hand and the rear end in your right hand and turn the focuser to "OFF"...
Page 29: Gear Installation On Some Telescopes
Suzhou Astroasis Vision Technology Co., Ltd. Ver 2.7 Figure 2-20 Note: When installing or uninstalling, please switch Oasis Focuser to disengage mode so that the two gears don’t touch with each other. 2.3. Gear installation on some telescopes For some telescopes the installation method of the gear is a little different from the descriptions in above sections.
Page 31: Installation On Sct
1114. CSA8925 is used for 8SE, C8 and C925, and CSA1114 is used for C11 and C14. The method of installing the adapter and Oasis Focuser on these SCTs is similar. Figure 3-1 illustrates what it looks like when Oasis focuser is installed on an SCT.
Page 32 3、 Put two bearings onto the knob and put the knob onto the shaft of the telescope, as shown in Figure 3- 4 and 3-5. There is no need to fix the knob on the telescope shaft by tightening setscrews at this time. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 33 Ver 2.7 Figure 3-4 Figure 3-5 4、 Put the bracket on the knob, and then use screws to fix the bracket and base cover, as shown in Figure 3-6. Figure 3-6 Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 34 Figure 3-7 6、 Switch Oasis Focuser to OFF state, and then use a Φ33 clamp to install Oasis Focuser main assembly on the bracket, as shown in Figure 3-8. Now the installation completes. When installing on 8SE, C8 or C925, please use a Φ30 clamp instead.
Page 35: Installation With Universal Adapter
4. Installation with universal adapter 4.1. Introduction For some telescope focusers Oasis Focuser cannot be installed directly by using a clamp due to the limitation of shape, size, space etc. However with universal adapters, Oasis Focuser can be installed on the coarse- tuning side of most telescope focusers.
Page 36: Standard Installation
Its focuser has a square-like shape and the clamp can’t be used on it directly. So we should use universal adapter to install Oasis Focuser on it. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 37 In this stage it is not need to fix the bracket to the telescope focuser. The fixing-bracket for SkyRover 72Ed is Model D. For other telescopes we may choose other models of fixing- bracket. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 38 Figure 4-6. Normally the gear has been already pre-installed on the shaft- converter by Astroasis and you do not need to install it by yourself. In this case you can just skip this step. Figure 4-6 4、...
Page 39 Ver 2.7 Figure 4-8 Figure 4-9 6、 Put the fixing-bracket to the telescope focuser, and then use screws to connect the mount-bracket and the fixing-bracket, as shown in Figure 4-10. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 40 Figure 4-11. Figure 4-11 8、 Switch Oasis Focuser to OFF state, and then install Oasis Focuser on the mount-bracket through the clamp. The installation is completed, as shown in Figure 4-12. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 41: Takahashi Epsilon-Like Installation
In this section we take the Takahashi FS-60CB telescope (60mm aperture) as an example to illustrate how to install the adapter. The appearance of FS-60CB focuser is shown in Figure 4-13. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 42 3、 Using the shaft-converter dedicated for Takahashi Epsilon-like focuser. Install the gear on the shaft- converter by using the setscrew, and align the front end of the gear and the front end of the shaft- Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 43 6、 Use Model T fixing-bracket, put it on the central protrusion and make sure it is parallel with the stainless shaft. Then use screws to connect the fixing-bracket and the mount-bracket, as shown in Figure 4-19 and Figure 4-20. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 44 Tighten screws to fix the fixing-bracket on the central protrusion, as shown in Figure 4-21, Figure 4-22 and Figure 4-23. Figure 4-21 Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 45 Figure 4-22 Figure 4-23 8、 Switch Oasis Focuser to OFF state, and then install Oasis Focuser on the mount-bracket through the clamp. The installation is completed, as shown in Figure 4-24. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 46 Suzhou Astroasis Vision Technology Co., Ltd. Ver 2.7 Figure 4-24 Takahashi Epsilon-like installation method is very similar to the standard installation method, except that the models of shaft-converter and fixing-bracket are different. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 47: Installation With Binary Gasket
Suzhou Astroasis Vision Technology Co., Ltd. Ver 2.7 5. Installation with binary gasket Usually this installation method is used to install Oasis Focuser on fine-tuning side of telescope focuser, however the principle can also be used for some special installation cases. 5.1. Introduction Many telescope focusers have fine-tuning dual-speed knobs, as shown in Figure 5-1.
Page 48: Installation Steps
The shape of the binary gasket is shown in Figure 5-3. Figure 5-3 For a particular telescope/focuser, we will just need a subset of the 4 chips for the installation of Oasis Focuser. For example, when we installing Oasis Focuser on FeatherTouch FTF30 focuser, we use 2mm and 8mm gaskets.
Page 49 Be sure to leave a slight gap between the gear and the shaft of the coarse-tuning knob so that the gear can rotate freely. Figure 5-6 Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 50 Figures 5-7 and 5-8. Figure 5-7 Figure 5-8 5、 Put the clamp on the focuser housing and tighten it with the screw, as shown in Figure 5-9. Figure 5-9 Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 51 7、 Remove the clamp from the focuser stainless shell. Detach the gear locator, then connect the clamp, gaskets, and the Oasis Focuser body, as shown in Figure 5-12. Switch Oasis Focuser to OFF state, and then install Oasis Focuser on the stainless shell through the clamp, as shown in Figure 5-13. The installation is now complete.
Page 53: Installation With Rabbit-Head Clamp
Ver 2.7 6. Installation with rabbit-head clamp The rabbit-head clamp is used to install Oasis Focuser on the fine-tuning position of some certain telescope focusers, such as FeatherTouch FTF20 series. The rabbit-head clamp is shown in Figure 6-1. The rabbit-head clamp is also available in several models to accommodate different telescope focusers.
Page 54 4、 Remove the rabbit-head clamp from the telescope focuser. Then connect the rabbit-head clamp with Oasis Focuser body with screws. Switch Oasis Focuser to "OFF" state, as shown in Figure 6-7. Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 55 5、 Put the rabbit-head clamp back on the stainless steel shell of the telescope focuser and tighten it with the screw. Now the installation is completed, as shown in Figure 6-8. Figure 6-8 Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 56: Installation On Helical-Focusing Telescopes
Oasis Focuser on such telescopes. 7.1. Installation on Askar ACL200 In addition to the Oasis Focuser body, the parts required to install on Askar ACL200 are shown in Figure 7-1. The overall effect after installation is shown in Figure 7-2.
Page 57 Suzhou Astroasis Vision Technology Co., Ltd. Ver 2.7 To install Oasis Focuser, we use RBASTRO's 220mm dovetail plate to replace the ACL200's original dovetail plate. The installation steps are as follows: 1、 Remove the original dovetail plate of ACL200, and use the original screws to connect the base to the hoop of ACL200, as shown in Figure 7-3, 7-4.
Page 58 5、 Adjust the fixing-bracket to the appropriate position of the dovetail plate, and use 1/4" screws to fix the fixing-bracket on the dovetail plate, as shown in Figure 7-10 and 7-11. Figure 7-10 Figure 7-11 Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 59 If the focuser used is the second-generation Oasis Focuser, rotate the back sleeve a little after the pin is removed. Then the front sleeve and the back sleeve will detach automatically when the back sleeve is rotated with certain angels.
Page 60 Figure 7-14 8、 Put the front end of the Oasis Focuser body into the collar, use the M4 setscrews to fix the gear on the motor shaft. Then screw two hand-screwed screws into the collar, but there is no need to tighten the hand-screwed screws at this time, as shown in Figure 7-15.
Page 61: Installation On William Optics Redcat 51 Apo
3、 The relative position between the components will be a little different, and it can be adjusted according to the actual situation. The overall effect after installation is shown in Figure 7-17. Figure 7-17 Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 62: Installation On Askar Sqa55
Suzhou Astroasis Vision Technology Co., Ltd. Ver 2.7 7.3. Installation on Askar SQA55 The components that used to install Oasis Focuser on Askar SQA55 are shown in Figure 7-18. Figure 7-19 shows the overall effect after the installation is complete. Figure 7-18 Figure 7-19 Copyright 2025 Suzhou Astroasis Vision Technology, Inc.
Page 63 Oasis Focuser, when disassembling the pin, you can gently press the front and back sleeves by hand so that the friction between the indicator pin and the sliding groove disappears, as shown in Figure 7-21. For the second-generation Oasis Focuser, you don’t need to press the front and back sleeves.
Page 64 If the focuser used is the second-generation Oasis Focuser, rotate the back sleeve a little after the pin is removed. Then the front sleeve and the back sleeve will detach automatically when the back sleeve is rotated with certain angels.
Page 65: Installation With Dedicated Adapters
The bearing housing and bearing are shown as figure 8-1. Figure 8-1 After the bearing housing and bearing are installed, Oasis Focuser can be installed on Skywatcher Newtonian dual-speed focuser with the Simplest installation. The gear used is A4 (8mm long, 4mm inner hole diameter).
Page 66 Figure 8-4 4、 Refer to Simplest installation method to install Oasis Focuser, as shown in Figure 8-5. When installing the clamp, pay attention to adjust the angle of the clamp to prevent the clamp from interfering with the focuser housing.
Page 68: Adapter For New 2047 2-Inch/3.5-Inch Focuser
Suzhou Astroasis Vision Technology Co., Ltd. Ver 2.7 8.2. Adapter for new 2047 2-inch/3.5-inch Focuser Installing Oasis Focuser on the new 2047 2-inch/3.5-inch focuser requires a special ring adapter, as shown in Figure 8-7. Figure 8-7 The gear used is B5 (for 2-inch focuser) or B6 (for 3.5-inch focuser). The total length of a B5 or B6 gear is 16mm, and the diameter of the inner hole is 5mm, as shown in Figure 8-8.
Page 69 Figure 8-11. Figure 8-11 8、 Switch Oasis Focuser to OFF state, and then install Oasis Focuser on the ring adapter through a Φ30 clamp. The installation is completed, as shown in Figure 8-12. When installing the clamp on the ring adapter, pay attention to adjust the angle of the clamp to prevent the clamp from interfering with the focuser housing.
Page 71: Adapter For Feathertouch Ftf3515/3545
8.3. Adapter for FeatherTouch FTF3515/3545 To install Oasis Focuser on FeatherTouch FTF3515/3545 focusers we need a special clamp and an intermediate ring, as shown in Figure 8-13. With this adapter Oasis Focuser is installed on the dual-speed side of the FeatherTouch focusers.
Page 72 3、 Use screws to connect the intermediate ring and the gear locator, as shown in Figures 8-17 and 8-18. Figure 8-17 Figure 8-18 4、 Use screws to connect the clamp and the intermediate ring, as shown in Figure 8-19. Figure 8-19 Copyright 2025 Suzhou Astroasis Vision Technology, Inc. All Rights Reserved.
Page 73 Oasis Focuser body, as shown in Figure 8-23. Switch Oasis Focuser to OFF state, and then install Oasis Focuser on the stainless shell through the clamp, as shown in Figure 8-24. The installation is now complete.

Astroasis Oasis Focuser Installation & Reference Manual

Quick Links

Need help?

Questions and answers

Related Manuals for Astroasis Oasis Focuser

Summary of Contents for Astroasis Oasis Focuser

Table of Contents