Crux mounts feature Harmonic Drive / Strain Wave Gear Tecnology. This tecnology gives Crux mounts the following advantages over traditional drive systems for astronomy applications;
- The mounts have zero backlash and therefore pointing and guiding can be very accurate
- They have very high torque. This makes it ideal your use with all loads. For instance the length of a refractor normally requires a much more powerful mount than a typical weight capacity suggests. The load limits for Crux mounts are for all types of telescopes and also for imaging
- The motor is very compact and therefore allows a small form factor, resulting in less bulk and weight.
- Harmonic Drive motors are very responsive and therefore react instantly to guiding commands. When combined with the zero backlash this allows for extremley accurate tracking. There is none of the high frequency oscillation normally associated with traditional drive systems.
- The high torque of the motor permits use without a counterweight, further reducing the overall weight. If a counterweight is added, the load capacity can be increased significantly. Note that this counterweight is not used to balance the telescope in the normal way. It is simply helping the drive system and making the load safer.
Please see the short video below for an explanation of how the Harmonic Drive system works.
The Crux T4000 is Hobym Observatory's ultimate mount and is observatory class. It has a very high payload capacity of up to 180kg. Combined with its extreme torque capability, the T4000 is compatible with all load types be it a large diameter reflector or large and long specialised refractor. It is a split axis design which helps facilitate installation. Total weight of the mount is still only 54kg (32kg for RA, 22kg for DEC)
An option for the T4000 is to have the RA head extended to better locate certain telescopes with reference to the pier position. For specifications of this and additional costs, please contact us for details.
As with all Crux mounts, the T4000 is provided with a mounting point for a QHY Polemaster. No adapter is needed. This makes polar alignment using the built in Altitude and Azimuth controls very simple. It is understood however that for a mount of this class, polar alignment will probably be handled via observatory software but the polemaster will allow for very simple initial setup of the mount.
Supplied with all Crux Mounts is the Titan TCS Controller. This provides GoTo functionality and all other mount control and connectivity. It is based on the LX200 protocol and is therefore fully ASCOM and INDI compliant. It also features wireless connectivity in the form of Bluetooth, with WiFi being added shortly. Thus is allows easy integration with Tablet applications such as Sky Safari and of course PC based applications.
One significant function of the Crux mount and TCS Controller is PEC training. This is where, using a guide system (like PHD2), the drive system is trained. This, once completed permanently (unless reset by the user) lowers the PE of the T4000 to typically +/- 3 arc seconds dependent on the mount. This enhanced error can then be combined with guiding leading to extremely low PE. Potentially as low as 0.1 arc sec. As part of our service, we PEC train each mount before delivery so you receive a mount that is capable of operating at its best, straight out of the box. A copy of the PE test data is also provided.
Specifications: HOBYM Observatory Crux T4000 Harmonic Drive Mount
General Specifications - Crux T4000
|Type ||German Equatorial |
|Azimuth Adjustment Range ||+/- 15° |
|Altitude Adjustment Range ||20 to 60° |
|Weight (excl counterweight) ||54kg |
|Optional Counterweights ||12kg x 4 |
|Max Load (No Counterweight) ||60.0kg |
|Max Load (with 4 x 12kg) ||180.0kg |
|Power Source ||12V DC |
|Telescope Mounting Format || M10 x 4 / 8x M8 35mm Spacing |
|Polar Alignment Support ||Polemaster Mounting |
|Dimensions ||700mm x 536mm x 320mm (at 50° Altitude) |
|Backlash ||Zero |
|PE Error after PEC Training ||+/- 3 arc sec (after PEC) |
|High Speed Slewing ||x400 |
| || |
|Titan TCS Controller || |
| || |
|Size ||83x87x36mm |
|Input Power ||12-30V DC |
|Protocol ||LX200 |
|Database ||NGC,IC,Messier, Planet 12000+ Object |
|Power Consumption (Tracking) ||12V 0.3-0.5A |
|Power Consumption (Max Slew) ||12V 1.5-2.0A |
|Wireless Connectivity ||Bluetooth (WiFi to be added) |
|Interface ||RS232 / USB / ST4 Guide |
At The Widescreen Centre, we prioritize prompt order processing and dispatch. We strive to dispatch all orders on the same day or the next working day, depending on the time of your order. We hold extensive stocks to ensure that your items are ready for immediate despatch. Please note that the cut-off time for same-day dispatch is usually 1:30 p.m.
For delivery within Mainland UK, we use reputable couriers to provide efficient service. You can expect your package to arrive in 1-2 working days. Please note that a signature may be required upon delivery to ensure a secure receipt.
In the case of special order items, the delivery time may be longer. If you have any concerns or questions about the delivery of your item, please don't hesitate to Contact Us. We are here to assist you.
Should there be any delay in dispatching your order, we will notify you to keep you informed.
Please be aware that The Widescreen Centre cannot be held responsible for any postal or third-party delays that may occur. We are committed to providing a reliable and efficient delivery service for our valued customers.
For more information please click here