# Skywatcher Maksutov-Cassegrain Optical Tube BKMAK 150 OTAW 150 mm aperture

**URL:** https://aio.lv/en/product--skywatcher-sw-3005--11447984
**Data updated:** 2026-02-24 11:02 (EET)
**Category:** Telescopes
**Manufacturer:** Skywatcher
**Manufacturer code:** SW-3005
**EAN:** 5901691604704
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Optical tube Skywatcher BKMAK 150 OTAW is a Maksutov‑Cassegrain telescope tube with a 150 mm aperture designed for compact planetary and deep‑sky observation. As an OTA (optical tube assembly), it provides the primary optical system without mount or tripod. Suitable for visual astronomy and astrophotography when paired with compatible mounts and accessories.

## Long description

Skywatcher Maksutov-Cassegrain Optical Tube BKMAK 150 OTAW is a 150 mm aperture optical tube assembly designed for compact, high-contrast observation of planets and select deep-sky objects. The Maksutov‑Cassegrain optical layout provides a long effective focal length in a short, portable tube, delivering sharp images with reduced chromatic aberration. As an OTA, it contains the primary optical components but does not include a mount, tripod, or accessory kit; it is intended for users who already have or plan to choose a compatible mount and imaging equipment.
Advantages
The BKMAK 150 OTAW offers a compact form factor with a long focal ratio suitable for high magnification views, making it efficient for planetary, lunar, and double-star observing. The closed-tube Maksutov design keeps optics protected from dust and reduces the need for frequent collimation. Its 150 mm aperture balances light-gathering power and portability, while the optical configuration minimizes chromatic and off-axis aberrations for crisp, high-contrast images.
Suitable for
Planetary and lunar observation at high magnifications
Imaging of planets and bright deep-sky targets when used on a stable equatorial or alt-azimuth mount
Portable field astronomy where compact size and robust optics are preferred
Observers who already own a compatible mount and accessories
Key specifications
Aperture: 150 mm
Optical design: Maksutov‑Cassegrain
Configuration: Optical Tube Assembly (OTA) — no mount or tripod included
Intended use: Visual observation and astrophotography with compatible mounts
Tube type: Closed-tube design to reduce dust and thermal currents
Typical strengths: Long effective focal length in a compact tube, reduced chromatic aberration, high-contrast imaging
How to use
Install the BKMAK 150 OTAW on a stable, appropriately rated mount using the provided mounting rail or tube rings compatible with the optical tube diameter. Balance the setup on the mount before attaching accessories. For visual observing, fit an eyepiece in the focuser and adjust focus while pointing at a bright object; start with lower magnification to locate the target, then increase magnification as seeing permits. For astrophotography, attach a suitable camera with the correct adapters, ensure the mount is polar-aligned (for long exposures) or accurately tracked, and use focus aids and live view to achieve precise focus. Allow the tube to reach thermal equilibrium with ambient temperature for best image quality.
Usage recommendations
Use the BKMAK 150 OTAW on a rigid mount with sufficient payload capacity and precise tracking for astrophotography. Allow time for thermal acclimation, and use high-quality eyepieces or imaging adapters to match the telescope’s focal ratio. Regularly check and secure mounting hardware; store the closed tube in a dry environment when not in use to protect the optics.

## FAQ

### What payment options are available?

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### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Skywatcher products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Skywatcher service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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