Telescope Accessories

Optional Motor Focus

NOTICE: The DC motor option is no longer available on all MoonLite focuser models. MoonLite is in the process of replacing it with a High Res stepper motor with battery operated hand controller. Please consider the High res stepper motor with Mini V2 controller option.

MoonLite makes 4 different configurations of motor focus options. A DC motor option with simple hand controller, or one of 3 different High Res Stepper Motor options. The DC motor option uses a dual port hand controller for $195. It is a non PC operated motor option and is recommended for both visual and imaging when a computer is not required. The High resolution Stepper motor options is for PC operation and come in 3 different configurations. A stand alone version that is robo focus compatible $190 (customer provides controller), A High Res Stepper Motor with our mini MoonLite controller for $440, and a High Res Stepper motor with our Dual Port DRO display controller for $685. We provide non ASCOM based utility programs along with an ASCOM driver for automated focusing using any ASCOM application. Both controllers have a remote temp probe so customers can use temp compensation operation in there ASCOM programs. Note: the High res stepper motor options (once installed) give MoonLite's 2" format focusers a 7 lb. lifting capacity and our 2.5" large format focusers an 8 lb. lifting capacity.

MoonLite High Resolution Stepper Motor Option Starting at $190.00

The High Res stepper motor option comes in 3 configurations:

  • Stepper motor option only - stand alone (no controller) $190
  • Stepper motor with MoonLite MiniV2 Controller $440
  • Stepper motor with MoonLite Dual port DRO Controller $685

All MoonLite's High Resolution stepper motor options use a premium, low backlash Hurst stepper motor. This provides very fine ( .00008" 1/2 step mode, or .00016" full step mode) resolution and accurate position repeatability required for today's high end imaging systems. It comes as an option on all single rate model focusers (SCT, Refractor, and Newtonian). It has such a fine variable rate that the reduction unit is not needed, so it is not offered on dual rate focusers. The slip clutch system allows both motor and manual focus control of the focuser at any time. We offer High Res Stepper Motor install kits separately that are easy for customers to install themselves at a later time.

The High Res stepper motor option-stand alone configuration

MoonLite sells the High Res stepper motor Stand alone option (no controller) for customers that may all ready have a controller and do not need an additional one. The stepper motor's 9 pin DBA connector is compatible with other stepper motor controllers such as the Robo focus controller, James Lacey Brand, and the Cercis brand controller. However a controller has to be used, the motor can not plug directly in to a PC and operate.

The High Res Stepper motor with MoonLite MiniV2 Controller

The miniV2 is an ASCOM compliant stepper motor controller for MoonLite's High Res Stepper Motors costing $440 for the pair. This single port controller works with all ASCOM based software packages out there today such as Focus Max, CCDSoft, MaximDL, SGP, etc. Our 1 ASCOM driver works on both 32 bit and 64 installations, we also provide a Non ASCOM software program for customers that are not running ASCOM based programs and need only a basic program to operate the focuser on a PC. Works great for a simple remote focus solution. The miniV2 controller has built in temperature sensor as well as a remote temp probe. The controller runs on 12 Volts DC and we include an AC adapter that has all the different plug configurations (US, Europe, UK, and Australia); however, most customers will simply use 12-volt power off their mount. This new miniV2 controller is designed to be used by a PC or its manual buttons and speed control knob for manual operation at the scope. All cables are included with the controller. A Direct plug-in for the SkyX is also supported.

The High Res Stepper motor with MoonLite Dual Port DRO Display Controller

The MoonLite Dual Port DRO Display controller is a high end fully featured controller. It has 2 ports so it can run 2 separate focusers at the same time, or 1 focuser with both a focus motor and rotator motor. It provides full DRO position display at the controller along with the remote PC. The manual buttons on the controller have a fine and fast rate so it can be used manually for critical focus with out a PC if needed. The controller has a remote temp probe, digital display for temp, position, voltage. This controller/ stepper motor option is recommended for both automated PC and hand held manual operation at the scope with the display. Comes with universal AC adapter for all country voltages and USB cable. $685 for the Stepper motor and Dual Port DRO display controller and all cables , temp probe and Power supply. Add a 2" format rotator for $440, or a 2.5" format rotator for $490.

Mini V2 and DRO dual port display controller specs:

  • Slip clutch drive for both manual and motor operation.
  • Low backlash/ high repeatable positioning hurst stepper motor.
  • Resolution = .00008" per micro half step, or .00016" full step mode
  • Robo focus compatible DB9 connector pin out.
  • Weight 12 oz. mini, 18 ox DRO
  • Manual buttons for up/down and speed knob on miniV2 controller
  • Full PC ASCOM compliant SW ability.
  • Temperature compensation ability with ASCOM based software that supports it
  • 3 additional non ASCOM programs included.
  • USB cable, and DB9 9pin motor cable included
  • Remote temp probe included
  • Controllers operate unipolor type stepper motors
  • Temp can be calibrated for offset
  • Non volatile memory for current position after power loss.
  • Temp jack 1/8" stereo, tip Vout,Ring Vcc, Sleeve ground
  • DC power jack 12volts 2.1mm X5.5mm barrel connector Center = Pos, Outside = Negative
  • DC power range 10 volts to 16 volt range
  • Red LED power indicator on miniV2, Will blink when focuser move command are given.
  • 2 speed rate on manual buttons (MoonLite Display Controller only).
  • Full DRO step count position display (MoonLite Display Controller only).
  • Single port on Mini V2 controller, Dual ports on DRO dual port display controller
  • LCD display tested to operate at -10 degrees F
  • $190.00 stepper motor stand alone.
  • $440 with MoonLite Mini controller.
  • $685 with MoonLite 2-speed DRO Display controller.
  • 2" format rotator is $440
  • 2.5" format rotator is $495
  • Rotators require a DRO dual port controller

Rotator Kit

MoonLite offers a High Res Stepper motor Belt Drive Rotator kit for all 2" and 2.5" large format Moonlite model focusers. The rotator is a double row bearing design that installs between the focuser's existing upper and lower flange assembly. The 2" format rotator adds 1.25" to the profile, while the 2.5" format rotator adds 1.12" to the focuser's over all profile. Full ASCOM support allows both focus and rotator to be used at the same time with 1 dual port controller. The rotator kit can be purchased separately, or it can be picked at the time the focuser is purchased and would be pre installed. Please note the rotator option requires a Dual port DRO controller, it can not run on a 2nd Mini V2 controller.

The High Res Stepper motor Belt Rotator comes in 4 configurations and price.
2" Format Stepper motor Belt driven Rotator with DRO Dual Port controller $935
2" Format Stepper motor Belt driven Rotator (stand alone) no controller needed $440
2.5" Format Stepper motor Belt driven Rotator with DRO Dual Port controller $985
2.5" Format Stepper motor Belt driven Rotator (stand alone) no controller needed $490

Please see pull down menu for rotator option when ordering a focuser, or see Rotator kits listed as an accessory to add to existing MoonLite focusers.

See Video for Rotator installation:

Introducing the NiteCrawler!

MoonLite Is also finishing up the new Nitecrawler 2 axis Rotating Worm drive focusers. These are intended for high capacity remote imaging automated configurations.
3 sizes will be released soon starting with the WR2.5" model, a WR3.0", and WR3.5" model.

Here's a sneak peek:


All focusers equipped with a High Res Stepper Motor now ship with our new adjustable Slip Clutch system at no additional cost. The new Slip Clutch provides customers to ability to choose between manual or automated motorized operation of the focuser.

The amount of slip can be adjusted on the new slip clutch by adjusting the tightness of the slip clutch ring. For manual knob operation of the focuser, turn the silver knurled ring loose. For motor operation of the focuser, tighten the silver knurled ring.

To adjust the knurled rings tension, it helps to hold the manual knob still with your right hand and turn the clutch ring with your left hand. Holding the manual knob in place will keep the shaft from turning allowing the clutch ring to tighten / loosen the clutch.

Note: No damage will be done if the focuser motor continues to run past the mechanical stops of the drawtubes travel. Even if the clutch is tight, it will simple slip when the travel runs out.

Customers with old style High res stepper motors assemblies can have the focuser updated with the new slip clutch feature for only $79. It is not a user installed item and does require sending us the focuser to have the stepper motor assembly swapped out. Please call to schedule.


Installing a DC or High res Stepper Motor on a CR model focuser


MoonLite offers both Non ASCOM Software programs and a universal ASCOM driver to operate all MoonLite focusers and controllers.

Please see Download page for Software