OCAL Electronic Collimator PRO

Product category: Product brand: Ocal
OCAL Electronic Collimator PRO

OCAL Electronic Collimator PRO

  • OCAL Electronic Collimator PRO
  • OCAL Electronic Collimator PRO
  • OCAL Electronic Collimator PRO
  • OCAL Electronic Collimator PRO

Price 289,00 €

The revolutionary way to collimate your instrument is with OCAL, the new smart device that allows you to collimate your Newtonian telescope via your computer in a simple, precise and fast way.

The collimation of a reflecting telescope is a problem that astronomers must solve. OCAL electronic collimator is an electronic device developed by Chaoxing Astronomy to calibrate the collimation of reflective telescopes. Its main function is to mark several calibration circles through software to achieve the purpose of collimation.

Main Features

  • Each collimator has a very high level of pixel accuracy, thanks to OCAL high quality control.
  • The installation takes place via T2 thread (M42x0.75) to minimize the installation errors. Collimation errors that are often caused by human different visual axis can be completely eliminated with OCAL technology.
  • The product solves the problem of collimation even on large telescopes, thanks to the collimation assistance feature the result is shown immediately on the screen.
  • Quick and easy: Collimate your instrument in just 4 steps!
  • The product can check if the center mark on the primary mirror is made correctly or not.
  • You can also use the screenshot feature to save the result of the collimation.
  • The PRO version comes with a new packaging and many other functions!
  • The PRO version includes an adapter from T2 to M48 and a 1.25 "adapter for easier installation.
  • Thanks to the mobile version of the software, it's now possible to use an Android or Apple device with OTG adapters to collimate a telescope directly from a smartphone!


Size: 51mm x 51mm x 32mm

Weight: 134 g

Connections: USB A/USB A

OS: Windows 7 and newer

The free program can be downloaded from the manufacturer's website.

The delivery includes:

OCAL Collimator PRO

USB cable

Adapter T2/M48 and 2"

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Terms and conditions

These terms and conditions are valid from November 7th, 2020.

Contact information

Astro Art Finland
Sinirinnankatu 18
FI-50190 Mikkeli

Telephone: +358442778923
Email: info@astroart-store.com
VAT Number: FI31590234

Products are sold for private customers over 18 years of age. Prices include VAT. The prices are subject to change.


Products on the online store are ordered by adding them to the shopping cart and by paying them with an online checkout service. All customer information is handled confidentially. Contact information collected during the order process is only used for the delivery of the order, unless otherwise stated. When placing an order you are required to accept the terms and conditions.

Payment and payment methods

The online checkout service in use is Klarna Checkout. The payment methods are invoice, installment payment, card payment and payment via online bank.

By filling your personal information at the checkout you accept the terms and conditions of Klarna AB (Klarna AB, Sveavägen 46, 111 34 Stockholm). By clicking "buy" you accept the terms and conditions of Astro Art Store.

Order and payment confirmation

After we have received your order we will immediately send you an order confirmation that contains your order information. Always check the content of the order confirmation. If you have questions regarding your order, contact our customer service immediately. Keep the order confirmation in case you need to contact our customer service. Make sure that you have your customer number and order number available when contacting our customer service. Always make sure that the package contents matches the order confirmation.

You can use the following information to contact our customer service:

Astro Art Finland
Sinirinnankatu 18
FI-50190 Mikkeli

Telephone: +358442778923
Email: info@astroart-store.com
VAT Number: FI31590234

Shipping methods and fees

Shipping fees include shipping and packaging fees. We will present an estimate of the shipping fees in the shopping cart. The exact shipping fees are visible when you have chosen your preferred payment method and shipping method for your order. The available shipping methods vary depending on the products and the combined weight of the products in the shopping cart. 

Delivery time

Our most common delivery times to Finland vary depending on the product and delivery method in question. Exceptions to delivery times are stated. We will notify you about the possible delays right after your order.

We are not responsible for delays caused by force majeure or indirect losses caused by delays. The online store will inform about exceptional delivery times on the website.


All of our products have at least 1-year warranty by the manufacturer. Warranty-related issues can be dealt either directly with the manufacturer or with Astro Art Store. 

Warranty does not apply to faults that have been caused by:

a) incorrect maintenance, lack of maintenance, or lack of calibration

b) software, parts, or equipment that have not been delivered by Astro Art Store

c) unauthorised modifications or misuse of the product

Return conditions

You have the right to cancel this agreement within 14 days without declaring the reason. The deadline for cancelling this agreement ends 14 days after you have reveived the last shipment of your order. If the product is downloaded, the deadline for cancelling this agreement is 14 days after you have downloaded the product.

To use your right to cancel, you need to send us an unambiguous notification of your decision (for example by phone or by email). You can also use our printable return form, but it is not required. To comply with the 14-day deadline you need to send the notification before the deadline.

Use the following contact information to send the notification:

Astro Art Finland
Sinirinnankatu 18
FI-50190 Mikkeli

Telephone: +358442778923
Email: info@astroart-store.com
VAT Number: FI31590234

Effects of cancelling your order

If you decide to cancel this agreement, we will return your payment in full, including the shipping costs (only the amount of the cheapest available shipping method). The payment will be returned without a delay, and within 14 days after you have received the cancellation confirmation.

Return fees are on the responsibility of the customer. The items must be returned to the address of Astro Art Finland with the same method as they have been delivered to the customer. 

We will return the payment by using the same payment method as the original payment, unless both parties agree otherwise. The payment is returned in a way that the you will not get any extra fees.

You must send the items back without a delay and within 7 days of receiving the cancellation confirmation. The deadline has been complied with, if you send the items back before the 7-day deadline.

You are only responsible for such decrease in value of the items that is not caused by handling that necessary to test for operation, features, or functionality of the items.

Unredeemed package

Failure to redeem your delivery is not the same as returning or cancelling your order. We will charge a fee for unredeemed orders that have not been cancelled according to return conditions.

Problematic situations

If the item has been lost or damaged during delivery or it does not correspond to your order, you need to use our contact information to inform us within 14 days by mail, email or by phone. The contact information can be found in "Return conditions". If the package has clearly been damaged during shipping, you need to inform the delivery company immediately.