So how do you like your Mewlon 250 CRS?
I am pleased with the Mewlon 250CRS. It could be a lifetime telescope for many, imo. The design of this version was well thought-out with the user in mind. For example, it has, similar to the first model, an electronic focuser that is precise in movement of the secondary to achieve critical focus; this unit can be employed as either manual focus (press buttons for focus), or active auto-focus. The variable speed focuser adjusts the rate of movement by how long one holds down on the in or out focus buttons. The primary mirror is cooled via three fans that are auto-on/off as required. That feature is controlled by three sensors, on the primary, inside the OTA and one outside. These sense constantly monitor the ambient temperature and control the fans. I appreciate the four vane arrangement. It provides a very sturdy fixture for the secondary housing and the associated baffling. The Takahashi finder scope is probably the best optical quality finder I have used, and on this series provides a sturdy handle to carry and assist in mounting the OTA.
Optically it is superb. The background is black in these scopes, scatter is fully controlled with quality of images well presented; details are only negatively affected by the seeing conditions. I can confidently say the low contrast features observed on Jupiter this current apparition, especially around opposition, were the most detailed seen by me. Festoons were incredible and presented as obvious large (relatively speaking) cloud top features. Color saturation was well presented, and the GRS, and intricacies around it, were well observed; the Jr (Oval BA) was seen. Transits of moons were pleasing and presented as well defined charcoal discs against the planet.
Do not discount this telescope for DSO. Clusters, galaxies and planetary nebulae are only limited by the aperture. The well-baffled optics provide that high contrast gradient required for these objects, especially so for galaxies and many planetary nebulae. I also really enjoy this telescope for double star observing.
It is a fine telescope, and one with very smooth optics. I am certainly glad I was able to make this purchase.