CDK350 Observatory System
Enjoy exceptional optical and tracking performance for astrophotography, or research, with the CDK350 package! Includes a CDK14 optical tube and L-350 mount.
- CDK14 optical tube:
- f/7.2 and 2563mm focal length
- No coma, no off-axis astigmatism, and no field curvature.
- Pinpoint stars across a 70mm image circle.
- Rock solid fused silica mirrors with low thermal expansion.
- Carbon fiber optical tube assembly for rigidity and fast cooling.
- Simple secondary mirror collimation thanks to the fixed primary mirror.
- L-350 direct drive mount:
- Zero periodic error, zero backlash, and minimal maintenance due to the lack of gears.
- Slew speeds up to 50 degrees/sec for satellite tracking and fast target acquisition.
- Sidereal tracking accuracy of < 0.30 arcseconds RMS over 5 minutes.
- High resolution optical encoders on both axes for precision feedback.
- Can be installed in either equatorial, or alt/az configuration.
- Includes PWI4 software (ASCOM compliant) for mount control.
The PlaneWave Instruments CDK14 is a 14 inch (0.35 m) f/7.2 Corrected Dall-Kirkham Astrograph telescope. The CDK14 has a dual carbon-fiber truss design, with 3 cooling fans ejecting air from the back of the telescope, and 4 fans blowing across the boundary layer of the mirror’s surface. The CDK14 covers a 70 mm field of view without any field curvature, off-axis coma, or astigmatism. The instrument weight is 48 lbs (21.8 kg) and comes standard with a backplate retaining ring ready to accept the focuser of your choice.
All CDK14 telescopes come with fused silica primary and secondary mirrors.
The L-Series combines versatility, simplicity and affordability by combining all the technology of our Observatory class telescopes into a compact stand-alone mount. In its Alt/Az configuration, it is considerably more compact than its equatorial counterpart, allowing a larger telescope to fit in a smaller enclosure. The mass it takes to make a rigid alt/az mount is substantially less, leading to cost savings. Unlike German Equatorial mounts, there are no meridian flips to deal with, and no large protruding counterweights to create a dangerous hazard in a public observatory. Alt/Az is more intuitive to use and no polar alignment is needed. Besides, it is the way the pros do it!
L-Series Mount Features:
- Direct-drive motors on each axis for smooth, fast, and virtually silent movement of the telescope
- Slew speeds up to 50 degrees per second
- High-resolution encoders on each axis for precise positioning
- Zero backlash
- Zero periodic error
- PointXP mount modelling software
- Enclosed electronics
- Through the mount cabling
|Type||Alt-Azimuth / Equatorial Direct-Drive Mount|
|Weight||110 lbs (50kg)|
|Component Weights||Azimuth Base – 40 lbs, Fork Arm – 70 lbs|
|Max. Load Capacity||100 lbs (45 kg)|
|Latitude Range||0 to 90 degrees, Northern and Southern hemispheres|
|Cable Management||Equipment cables can be wired through mount|
|Control Electronics||PlaneWave Interface dual axis telescope control|
|User Interface||PlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software|
|Homing Sensors||Home position sensors are included allowing the mount to find its home position on power up.|
|Slew Rate||20 degrees per second (standard); 50 degrees per second (maximum), both axes|
|Power Requirement||Accepts 120 to 240 VAC. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter|
|Aperture||14 inch (356mm)|
|Focal Length||2563 mm (101 in.)|
|Central Obstruction||23.5% by surface area; 48.5% of the Primary Mirror Diameter|
|Back Focus from Mounting Surface||11.09 in. (282 mm)|
|Weight||48 lbs (22 kg)|
|Optimal Field of View||52 mm Image Circle|
|Motor Control||Industrial grade brushless motor control system and built in electronics|
|Motor – Azimuth and Altitude||Direct Drive 3 Phase Axial-Flux Torque Motors|
|Encoder – Azimuth and Altitude||152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution).|
|Motor Torque||Approximately 20 ft-lbs continuous; 50 ft-lbs peak|
|Drive Electronics||Industrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card|
|Telescope Control Software||PlaneWave Interface (PWI4). Incorporates PointXP mount modeling software by Dave Rowe. Provides HTTP and ASCOM control interfaces. MaxIm DL is required for camera control when building a pointing model within our PWI4 software.|
|Pointing Accuracy||<10 arcsecond RMS with PointXP Model|
2 arcseconds at sidereal velocity
0.3 arcseconds over a 5-minute period at sidereal velocity
|System Natural Frequency||10 Hz or greater|
For warranty information please check our Standard Warranty Page
Drawings and Diagrams
PlaneWave Interface 4 Software User Manual_V15 1.7.2021
L-350 Mechanical Installation Guide
Mounting Bracket for Finderscopes (125360)
Finderscope and Mounting Bracket (200985)
2 inch Mirror Diagonal (D1029ED)
EFA Kit Electronic Focuser (240901)
Piggyback Dovetail Bar (140990)
IRF90 – Integrated Rotating Focuser (600180)
Counterweight Accessory for CDK14 (200150)
Portable Rolling for Pier Mounts (600128)
Equatorial Wedge, L-350 Mount (600565)
|Heating elements for dew prevention||The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately|
|OTA Cover||To protect the primary mirror and inside of the optical tube|
|Flashdrive||Contains software and instructions for collimation and spacing the primary to secondary mirror|
|Hardware||Six 3/8-16 x 1/4″ socket head cap screws to bolt the mount to the pier, or wedge
Six 3/8-16 x 1/4″ washers
One extended length shoulder bolt for RA axis to EQ wedge alignment
|One 16′ USB cable||To connect the mount to the observatory control computer|
|One 120VAC power cable||To provide power to the mount|
|Standard Allen Key set||For tightening bolts used on the mount|
|Flashdrive||Contains PWI4 software for mount control and instructions for installation|
|Gamepad||Used for control of the mount tracking speeds for visual observing|