Apertura CarbonStar 150 Imaging Newtonian

Apertura has introduced a notable imaging Newtonian telescope to the astrophotography community: the CarbonStar 150. This telescope is designed to cater specifically to those who prioritize capturing detailed and high-quality astronomical images. With a set of modernized features and a focus on delivering strong optical performance, the CarbonStar 150 stands out as a viable option for both seasoned astrophotographers and those new to the field.

Apertura CarbonStar 150 Imaging Newtonian

The CarbonStar 150 is a Newtonian reflector telescope with a primary mirror measuring 150mm (approximately 5.9 inches) in diameter. This relatively large aperture allows for significant light-gathering capability, which is a crucial factor in capturing detailed images of celestial objects. The telescope operates at a focal ratio of f/4, making it much faster than many telescopes in its class, including some SCT (Schmidt-Cassegrain Telescope) reflectors of a similar size. This fast focal ratio is particularly beneficial for astrophotography, as it allows for shorter exposure times, reducing the likelihood of motion blur and enabling the capture of more data in a shorter period.

The primary mirror is crafted from borosilicate glass, a material known for its thermal stability, which helps in maintaining image clarity even when temperature fluctuations occur. The mirror is also coated with enhanced aluminum, providing a reflectivity of 96%, and protected by a silicon dioxide (SiO2) overcoat. This coating not only boosts the mirror’s reflectivity but also protects it from environmental factors that could degrade its performance over time.

The CarbonStar 150 is built with modern materials and construction techniques, ensuring durability and ease of use. One of the standout features is its carbon fiber optical tube assembly. Carbon fiber is chosen for its low thermal expansion coefficient, meaning that the tube remains stable under varying temperatures, reducing the risk of focus shift. This material also contributes to the telescope’s relatively lightweight design, with the entire optical tube assembly (OTA) weighing just 10.4 pounds and measuring slightly over 19 inches in length.

Modern imaging Newtonian option, Apertura CarbonStar 150

In terms of mechanical components, the telescope features a linear bearing focuser. This focuser design resembles the traditional Crayford-style but incorporates a flat rail that runs on multiple ball bearings. This mechanism offers more points of contact, ensuring a smoother and more precise focusing experience, even when heavier imaging equipment is attached. The focuser is also EAF (Electronically Assisted Focuser) ready, accommodating many popular automated focusing systems, which can be easily installed thanks to the included detailed manual.

Apertura has also addressed the issue of stray light, which can degrade image quality by causing internal reflections that reduce contrast. The CarbonStar 150 includes nine knife-edge baffles inside the optical tube to minimize these reflections. Additionally, a 3D-printed primary mirror cell shield is provided to further reduce the potential for stray light interference. This attention to detail ensures that users can achieve high-contrast images even in less-than-ideal lighting conditions.

For those who may be unfamiliar, collimation is the process of aligning the optical elements of a telescope to ensure optimal performance. While collimation can be a daunting task for beginners, the CarbonStar 150 aims to simplify this process. The telescope’s CNC-machined spider vane design minimizes the risk of flex or twisting, common issues in other designs that can complicate collimation. Apertura provides clear instructions for collimation using both laser collimators and their proprietary CCE tool, making it easier for users to achieve precise alignment.

Specifications

• SKU Number: APT-CS-6F4N
• Model Number: CS-6F4N
• Telescope Series: Apertura Imaging Newtonians
• Focal Ratio: f/4
• Optical Design: Newtonian Reflector
• Telescope Aperture: 150mm (5.9")
• Telescope Mount Type: No Mount - OTA Only
• Type of Electronics: OTA Only - No Electronics
• Focal Length (mm): 600
• Optical Coatings: Enhanced Aluminum w/ SiO2 Overcoat (96% Reflectivity)
• Primary Mirror Type: Parabolic
• Primary Mirror Material: Borosilicate
• Secondary Mirror Central Obstruction: 62 mm
• Secondary Mirror Type: Flat
• Focuser Style: Linear Bearing
• Focuser Size: 2"
• Focuser Speed: Dual Speed
• Optical Tube Assembly Material: Carbon Fiber
• Telescope Outer Diameter (in.): 7.25" (184 mm)
• Telescope OTA Weight (lb.): 10.4
• Telescope OTA Length (in.): 19.19" (487 mm)
• Warranty: Apertura Two Year with 3 Year Sharp Warranty
   

The Apertura CarbonStar 150 Imaging Newtonian offers a combination of modern features, quality construction, and optimized optics, making it a strong contender in the field of astrophotography. Its thoughtful design and attention to detail cater to the needs of both amateur and experienced astronomers, providing a reliable tool for capturing stunning images of the night sky. Whether you are upgrading your current setup or looking to start your astrophotography journey, the CarbonStar 150 presents a well-rounded option worth considering.