OCAL Electronic Collimator Pro for Newtonian, RC and SCT Telescopes - Version 4.0
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- Reliable tool for electronically collimating Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) OTAs
- Equipped with a higher-resolution sensor and advanced CMOS technology
- A larger 4:3 screen-to-body ratio design displays the internal structure of the other side of the telescope
- The sensor is carefully aligned and securely mounted to reduce tilt, improve accuracy, and maintain stable calibration
- Features a red shell with marked reference circles, making it easier to identify the reflective surface of the calibrator
OCAL Electronic Telescope Collimator Pro - Version 4.0
Take the guesswork out of telescope collimation with the OCAL Electronic Collimator Pro 4.0. Designed for Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) telescopes, this digital collimation tool combines a high-resolution camera, individually calibrated sensor, adjustable on-screen alignment guides, and user-friendly software to provide a clear, magnified view of your optical system. Its streamlined four-step process helps you precisely align critical components for sharper visual observations and astrophotography—all without squinting through a traditional collimation tool. Below, we’ll take a closer look at its improved Version 4.0 imaging, software controls, telescope compatibility, setup process, and included accessories.
Thoughtful Upgrades on the OCAL Version 4.0
Effortless Collimation
A high-resolution CMOS camera displays the telescope’s optics on screen with adjustable circles and crosshairs, making precise alignment easier to see and complete. Use the OCAL 4.0 with Windows, macOS, or Android devices to collimate indoors or during the day—without using valuable observing or imaging time.
Smaller and More Stable
The compact housing retains OCAL’s precision 3A assembly process while reducing size to 2" wide and weighing around 4.7 oz (134 g). This improves everyday stability and helps maintain consistent calibration after minor movement or bumps.
Made for Popular Reflectors
Compatible with Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) telescopes, the OCAL 4.0 works with a wide range of popular reflecting optical systems. Its native M42 threaded interface and included M42-M48 and M42-1.25" adapters provide flexible installation for connecting to compatible focusers, visual backs, and other accessories.
OCAL Version Comparison
| OCAL Model | Shell Color | Lens Aperture | Clarity | Image Quality | Accuracy | 3A Assembly Process |
|---|---|---|---|---|---|---|
| 2.0 | Red | Small | Ordinary | Ordinary | Ordinary | No |
| 3.0 | Green | Large | Ordinary | Ordinary | Ordinary | No |
| 3.0 MAX | Blue-Green | Large | Ordinary | Ordinary | High | Yes |
| 4.0 *Included* | Red | Medium | High | High | High | Yes |
More Precise Digital Collimation
The OCAL Electronic Collimator 4.0 makes it easier to accurately collimate Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) telescopes. Its higher-resolution sensor and advanced CMOS technology produce clearer, more detailed images than the 3.0 MAX, helping users identify small alignment errors. The optimized 4:3 viewing format also displays more of the telescope’s internal optical system than the previous 16:9 format, providing a more natural view for positioning the adjustable circles and crosshairs.
Compact Body for Stable Performance
OCAL spent two years redesigning the 3.0 MAX to create a smaller, lighter, and more durable collimator. Version 4.0 retains the previous model’s precision 3A camera-module assembly process while reducing the risk of calibration changes caused by minor bumps or movement. Although its lens aperture is slightly smaller, it delivers improved image quality and overall performance. The new red housing also features circular reference markings that make the reflective surface easier to identify during setup
Flexible Control and Better Overall Value
Operate the OCAL 4.0 from a compatible Windows or macOS computer or an Android smartphone or tablet. Its software provides controls for brightness, contrast, focus, exposure, and customizable alignment guides, while saved configurations and screenshots make it easier to repeat settings or share results. These performance and usability improvements are offered at a lower retail price than the 3.0 MAX, providing greater value without sacrificing accuracy or build quality.
Specifications
- Calibration Accuracy: <0.05mm (optical axis deviation)
- Sensor: High-resolution CMOS (resolution upgraded vs. 3.0MAX)
- Display: 4:3 aspect ratio, real-time imaging
- Compatibility: 1.25 in to 2 in
- Body Material: Durable aluminum build
- Power: USB-C (5V/1A)
- Body Weight: 4.7 oz (134 g)
- Dimensions: Approx. 2.01" × 2.01" × 1.18" (51 × 51 × 30 mm)
Helpful Video Links
Other Information
- Country of Manufacture: China
OCAL Electronic Telescope Collimator Pro - Version 4.0
Take the guesswork out of telescope collimation with the OCAL Electronic Collimator Pro 4.0. Designed for Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) telescopes, this digital collimation tool combines a high-resolution camera, individually calibrated sensor, adjustable on-screen alignment guides, and user-friendly software to provide a clear, magnified view of your optical system. Its streamlined four-step process helps you precisely align critical components for sharper visual observations and astrophotography—all without squinting through a traditional collimation tool. Below, we’ll take a closer look at its improved Version 4.0 imaging, software controls, telescope compatibility, setup process, and included accessories.
Thoughtful Upgrades on the OCAL Version 4.0
Effortless Collimation
A high-resolution CMOS camera displays the telescope’s optics on screen with adjustable circles and crosshairs, making precise alignment easier to see and complete. Use the OCAL 4.0 with Windows, macOS, or Android devices to collimate indoors or during the day—without using valuable observing or imaging time.
Smaller and More Stable
The compact housing retains OCAL’s precision 3A assembly process while reducing size to 2" wide and weighing around 4.7 oz (134 g). This improves everyday stability and helps maintain consistent calibration after minor movement or bumps.
Made for Popular Reflectors
Compatible with Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) telescopes, the OCAL 4.0 works with a wide range of popular reflecting optical systems. Its native M42 threaded interface and included M42-M48 and M42-1.25" adapters provide flexible installation for connecting to compatible focusers, visual backs, and other accessories.
OCAL Version Comparison
| OCAL Model | Shell Color | Lens Aperture | Clarity | Image Quality | Accuracy | 3A Assembly Process |
|---|---|---|---|---|---|---|
| 2.0 | Red | Small | Ordinary | Ordinary | Ordinary | No |
| 3.0 | Green | Large | Ordinary | Ordinary | Ordinary | No |
| 3.0 MAX | Blue-Green | Large | Ordinary | Ordinary | High | Yes |
| 4.0 *Included* | Red | Medium | High | High | High | Yes |
More Precise Digital Collimation
The OCAL Electronic Collimator 4.0 makes it easier to accurately collimate Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) telescopes. Its higher-resolution sensor and advanced CMOS technology produce clearer, more detailed images than the 3.0 MAX, helping users identify small alignment errors. The optimized 4:3 viewing format also displays more of the telescope’s internal optical system than the previous 16:9 format, providing a more natural view for positioning the adjustable circles and crosshairs.
Compact Body for Stable Performance
OCAL spent two years redesigning the 3.0 MAX to create a smaller, lighter, and more durable collimator. Version 4.0 retains the previous model’s precision 3A camera-module assembly process while reducing the risk of calibration changes caused by minor bumps or movement. Although its lens aperture is slightly smaller, it delivers improved image quality and overall performance. The new red housing also features circular reference markings that make the reflective surface easier to identify during setup
Flexible Control and Better Overall Value
Operate the OCAL 4.0 from a compatible Windows or macOS computer or an Android smartphone or tablet. Its software provides controls for brightness, contrast, focus, exposure, and customizable alignment guides, while saved configurations and screenshots make it easier to repeat settings or share results. These performance and usability improvements are offered at a lower retail price than the 3.0 MAX, providing greater value without sacrificing accuracy or build quality.
Specifications
- Calibration Accuracy: <0.05mm (optical axis deviation)
- Sensor: High-resolution CMOS (resolution upgraded vs. 3.0MAX)
- Display: 4:3 aspect ratio, real-time imaging
- Compatibility: 1.25 in to 2 in
- Body Material: Durable aluminum build
- Power: USB-C (5V/1A)
- Body Weight: 4.7 oz (134 g)
- Dimensions: Approx. 2.01" × 2.01" × 1.18" (51 × 51 × 30 mm)
Helpful Video Links
- 1x OCAL 4.0 Body
- 1x M42-to-M48 Adapter Ring
- 1x M42-to-1.25-inch Nose Piece
- 1x OTG Adapter
- 1x USB-A to USB-C Cable
- Reliable tool for electronically collimating Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) OTAs
- Equipped with a higher-resolution sensor and advanced CMOS technology
- A larger 4:3 screen-to-body ratio design displays the internal structure of the other side of the telescope
- The sensor is carefully aligned and securely mounted to reduce tilt, improve accuracy, and maintain stable calibration
- Features a red shell with marked reference circles, making it easier to identify the reflective surface of the calibrator
OCAL Electronic Telescope Collimator Pro - Version 4.0
Take the guesswork out of telescope collimation with the OCAL Electronic Collimator Pro 4.0. Designed for Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) telescopes, this digital collimation tool combines a high-resolution camera, individually calibrated sensor, adjustable on-screen alignment guides, and user-friendly software to provide a clear, magnified view of your optical system. Its streamlined four-step process helps you precisely align critical components for sharper visual observations and astrophotography—all without squinting through a traditional collimation tool. Below, we’ll take a closer look at its improved Version 4.0 imaging, software controls, telescope compatibility, setup process, and included accessories.
Thoughtful Upgrades on the OCAL Version 4.0
Effortless Collimation
A high-resolution CMOS camera displays the telescope’s optics on screen with adjustable circles and crosshairs, making precise alignment easier to see and complete. Use the OCAL 4.0 with Windows, macOS, or Android devices to collimate indoors or during the day—without using valuable observing or imaging time.
Smaller and More Stable
The compact housing retains OCAL’s precision 3A assembly process while reducing size to 2" wide and weighing around 4.7 oz (134 g). This improves everyday stability and helps maintain consistent calibration after minor movement or bumps.
Made for Popular Reflectors
Compatible with Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) telescopes, the OCAL 4.0 works with a wide range of popular reflecting optical systems. Its native M42 threaded interface and included M42-M48 and M42-1.25" adapters provide flexible installation for connecting to compatible focusers, visual backs, and other accessories.
OCAL Version Comparison
| OCAL Model | Shell Color | Lens Aperture | Clarity | Image Quality | Accuracy | 3A Assembly Process |
|---|---|---|---|---|---|---|
| 2.0 | Red | Small | Ordinary | Ordinary | Ordinary | No |
| 3.0 | Green | Large | Ordinary | Ordinary | Ordinary | No |
| 3.0 MAX | Blue-Green | Large | Ordinary | Ordinary | High | Yes |
| 4.0 *Included* | Red | Medium | High | High | High | Yes |
More Precise Digital Collimation
The OCAL Electronic Collimator 4.0 makes it easier to accurately collimate Newtonian, Ritchey-Chrétien (RC), and Schmidt-Cassegrain (SCT) telescopes. Its higher-resolution sensor and advanced CMOS technology produce clearer, more detailed images than the 3.0 MAX, helping users identify small alignment errors. The optimized 4:3 viewing format also displays more of the telescope’s internal optical system than the previous 16:9 format, providing a more natural view for positioning the adjustable circles and crosshairs.
Compact Body for Stable Performance
OCAL spent two years redesigning the 3.0 MAX to create a smaller, lighter, and more durable collimator. Version 4.0 retains the previous model’s precision 3A camera-module assembly process while reducing the risk of calibration changes caused by minor bumps or movement. Although its lens aperture is slightly smaller, it delivers improved image quality and overall performance. The new red housing also features circular reference markings that make the reflective surface easier to identify during setup
Flexible Control and Better Overall Value
Operate the OCAL 4.0 from a compatible Windows or macOS computer or an Android smartphone or tablet. Its software provides controls for brightness, contrast, focus, exposure, and customizable alignment guides, while saved configurations and screenshots make it easier to repeat settings or share results. These performance and usability improvements are offered at a lower retail price than the 3.0 MAX, providing greater value without sacrificing accuracy or build quality.
Specifications
- Calibration Accuracy: <0.05mm (optical axis deviation)
- Sensor: High-resolution CMOS (resolution upgraded vs. 3.0MAX)
- Display: 4:3 aspect ratio, real-time imaging
- Compatibility: 1.25 in to 2 in
- Body Material: Durable aluminum build
- Power: USB-C (5V/1A)
- Body Weight: 4.7 oz (134 g)
- Dimensions: Approx. 2.01" × 2.01" × 1.18" (51 × 51 × 30 mm)
Helpful Video Links
Other Information
- Country of Manufacture: China
- 1x OCAL 4.0 Body
- 1x M42-to-M48 Adapter Ring
- 1x M42-to-1.25-inch Nose Piece
- 1x OTG Adapter
- 1x USB-A to USB-C Cable
OCAL Electronic Collimator Pro for Newtonian, RC and SCT Telescopes - Version 4.0