Sorry I don't want to start a fire, but what is it that is worth *so much* for the nitecrawler rather than attaching a ZWO EAF to the stock focuser? Being an SV scope I take it for granted the focuser by itself is already good, so it is down to the focuser motor really. But with backlash compensation the EAF works really well; in my Esprit150 I use NINA and get an r=1 in mist of mt focuset runs. So seriously, it's not me wanting yo start a battle, I just want to understand what would justify the really high extra price...
While the designation of "worth" can be subjective and depend on specific user needs and priorities, the Moonlite Nitecrawler series of focusers stands out due to a combination of advanced features and robust design, making it a top contender in the high-end telescope focuser market. Here's a breakdown of what makes it exceptional:
Key Features and Benefits:
* High Load Capacity and Stability: The Nitecrawler has a substantial instrument load capacity of up to 25 lbs. This is crucial for supporting heavy imaging equipment, ensuring stability and minimizing flexure, which can negatively impact image quality. It does this through a design incorporating three stainless steel linear rails and large ½" high-capacity bearings under significant preload pressure.
* Extreme Precision and Repeatability: Utilizing "fly by wire" control technology and dual-axis, no-backlash lead screws, the Nitecrawler offers focusing accuracy and repeatability down to 0.26 microns per step. This level of precision is vital for achieving critical focus, especially in astrophotography. The rotating drawtube also offers a resolution of 0.001 degrees.
* Integrated Electronic Control and Rotation: Fully integrated electronic control for both focusing and rotation. This eliminates the need for separate rotators and controllers, simplifying setup and reducing potential points of failure.
* Position Memory and Holding Power: Once focused, the Nitecrawler can hold its position even when the power is turned off. It also remembers its position upon power-up, eliminating the need to re-home the focuser at the beginning of each session.
* CNC-Like Positioning Technology: The Nitecrawler implements positioning technology similar to that found in modern CNC machinery. This ensures reliable and consistent performance over time.
* Versatile Control Options: It typically offers multiple control options, including ASCOM, non-ASCOM, and SkyX compatibility, allowing seamless integration with popular astronomy software. It also often includes manual control via knobs with adjustable jog rates.
* Auxiliary Ports and Expandability: Many Nitecrawler models feature auxiliary motor ports that can be used to control optional accessories like mini worm secondary focusers, automated dust covers, or focal reducer/flattener positioning systems, further enhancing automation capabilities.
* Robust and Durable Construction: Moonlite is known for it's high-quality materials and construction, longevity and reliable performance.
While it comes with a higher price tag, its performance and features often justify the investment for serious astrophotographers and remote observatory setups demanding the highest levels of accuracy and automation.
Edited by Vision, 25 April 2025 - 08:43 AM.
