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Kendrick Dew Controllers

The Kendrick Dew Remover System is the Gold Standard for removal and prevention of dew (or frost) from forming on optics. Our products are used worldwide by amateur and professional astronomers, hospital operating rooms, and dental practices. We have an impressive product line-up to suit every application and budget.

$ Micro and Micro-D Controllers - In Stock!

Light-Duty “grab-n-go” dew control and DSLR Power supply (Micro-D) for camera lenses and small refractors.

$ Standard Dual Channel Controller - In Stock!

A simple but effective controller for telescopes of all sizes.

$$ DigiFire 8 Quad Channel Controllers - In Stock!

Our heavy-duty “Prosumer” model with 4 individual adjustable heater ports and programmable power supply suitable for powering popular DSLR cameras.

$$$ DigiFire 12 Temperature Sensing Controller - In Stock!

A step-up from our DigiFire 8 that adds Temperature Sensing heater control (on 2 of 4 heater ports).

$$$$ Premier Observatory Class Controller Dew Control AND Focuser Control - Coming this Fall

Our Observatory Class Model with all of the features of our DigiFire 12 model PLUS:
  • Remote operation – control your dew heat via internet!
  • Wireless connection between controller and observatory computer
  • User upgradable firmware
  • Optional Temperature Compensating ASCOM Focuser – will drive most popular focusers fitted with a stepper motor. Also includes a wireless remote for manual focusing. Also controllable by SmartPhone/Tablet App.
  • Availability - Fall 2015

 

MICRO & MICRO-D Controllers

The Micro Controller is designed for Astronomers and Astrophotographers who want the best in lightweight, compact, Grab'n'Go gear.

Despite its small size, this controller is not small in its performance or build quality. It is well built and well thought out.

This new version of the Micro controller comes with our standard RCA connectors. It will useable with our entire Premier and FireFly heater lines.

The controller has two slotted tabs that can be used to attach the supplied lanyard so that the controller may be hung from a convenient location. Velcro tabs are also provided if you prefer to "stick" the controller to your telescope or mount. Also, the mounting tabs are convenient for anyone who wants to mechanically mount the controller with screws to a Dobsonian telescope base, Dobsonian upper tube assembly, inside an eyepiece box or wherever else one may wish to mount the controller.

NOTE: We will be manufacturing two versions of this controller. The version described above and a second version (Micro-D) with one heater output and one output at 8 vdc for DSLR cameras, allowing a photographer to prevent dew and power the camera from one box. This feature will require the purchase of one of our DSLR DC Battery couplers and cables found at the bottom of this page.

It comes with our standard one year parts and labour warranty.

TECH SPECS for the Micro Controller:
  • ELECTRICAL SPECS: 12 VDC, 3 amps.
  • Single channel, two (2) RCA outputs for heater attachment.
  • Simple rotary knob control.
  • LED Power status indication.
  • Low voltage cut-off control. (a Kendrick standard!). IMPORTANT NOTE on this feature.
  • RFI Clean. A must for CCD imagers!
  • Pulse Width Modulation duty cycle control.
  • Reverse polarity protected (a Kendrick standard!).
  • Fused on board with Auto Reset. (the provided power cord is fused as well at 7 amps)
  • Mating Terminal Block power input. This will allow users to terminate the controller power cable in a connector of their choice.
  • Fused power cable included (cigarette lighter plug).
  • Weight: 1.6 oz (30 grams)
  • Dimensions (excluding tabs): 65mm x 36mm x 25mm (2.56" x 1.4" x 1.0")
    (including tabs): 80mm x 36mm x 25mm (3.15" x 1.4" x 1.0")
Micro Controller

TECH SPECS for the Micro-D Controller:
  • ELECTRICAL SPECS: 12 VDC, 3 amps.
  • Single channel, one RCA output for heater attachment.
  • One output at 8 vdc for powering a DSLR camera. Connector is a 5.5mm x 2.5mm DC Power Jack. Requires the purchase of one of our DSLR power Couplers (Canon & Nikon cameras)
  • Simple rotary knob control.
  • LED Power status indication.
  • Low voltage cut-off control. (a Kendrick standard!). IMPORTANT NOTE on this feature.
  • RFI Clean. A must for CCD imagers!
  • Pulse Width Modulation duty cycle control.
  • Reverse polarity protected (a Kendrick standard!).
  • Fused on board with Auto Reset. (the provided power cord is fused as well at 7 amps)
  • Mating Terminal Block power input. This will allow users to terminate the controller power cable in a connector of their choice.
  • Fused power cable included (cigarette lighter plug).
  • Weight: 1.6 oz (30 grams)
  • Dimensions (excluding tabs): 65mm x 36mm x 25mm (2.56" x 1.4" x 1.0")
    (including tabs): 80mm x 36mm x 25mm (3.15" x 1.4" x 1.0")
Micro-D Controller

IMPORTANT NOTE: Micro and Micro-D Controllers are designed as "light-duty". They are very compact and light weight... perfect for "grab & go" using small batteries. They are NOT designed to run large heaters. Suitable applications include:

  • Small refractors up to 4" diameter
  • Newtonian secondary mirror heaters
  • Camera lenses
  • Eyepiece heaters

SKUDescriptionPrice 
2001-MICRO Micro Controller with 2 heater ports CAN $144.00
2001-MICRO-D Micro Controller with 8 vdc power supply and one heater port CAN $167.00
208-IPP-ACKIT Anderson Power Pole Pre-Welded Plug Kit with 30 Amp Contacts CAN $8.00
208-IPP-AC-UF Anderson Power Pole Non-Welded Plug Kit with 30 Amp Contacts CAN $7.00

 

Standard Dual Channel Controller

Standard Dual Channel Controller This controller has been introduced to replace our original, long standing Model VI controller. The Standard Dual Channel has a ton of new features but is really simple to use! As well, it can handle more power and use that power more efficiently! We are very excited about this newest addition to our Dew Remover System!

Features & Specifications:

  • Rugged Plastic Case with modern styling.
  • Zero to 100% heater control.
  • Fused onboard. Auto Reset.
  • On board protection from over current, over temperature, over voltage.
  • LED overcurrent indication at both outputs.
  • 10 amp capacity (5 amps per channel).*
  • 6' detachable fused Power cord. Cord is fused at 7 amps.
  • Reverse polarity protected.
  • On/off switch (no other dew controller on the market has this).
  • RFI (radio frequency interference) free. A critical feature for astro imagers!
  • Pulse Width Modulation duty cycle control.
  • 4 outputs, 2 for each control knob.
  • LED Power on indicator for both outputs.
  • Low voltage cut-off control with LED indication (a Kendrick standard!). IMPORTANT NOTE on this feature.
  • Mosfet transistors built on board and on EACH output (no voltage drops!). Get the best possible performance out of your heaters!
  • Velcro attachment. Parts included.
  • 12 VDC operation.
  • Dimensions: 4" x 3" x 1.35" (1.75" with knobs).
  • 1 Year warranty

* We have fused the power cord at 7 amps even though the controller is capable of amperages of 5 amps per channel (10 amps total). We do not recommend replacing the power cord fuse with a larger fuse as the power input socket is not rated for a higher amperage.

Standard Dual Channel Controller Manual (PDF)

Controller Feature Comparison (PDF)

SKUDescriptionPrice 
2001-SDCC Standard Dual Channel Controller with 4 outputs/14 amps maximum/12VDC CAN $160.00
CDC-PC-BATT 6 ft Replacement Power Cord with 7 amp fuse for SDCC Controller CAN $24.00

 

NEW>>> DigiFire 8 and 12 Controllers

DigiFire 8 Controller Our heavy-duty "Prosumer" model with 4 individual adjustable heater ports and programmable power supply suitable for powering popular DSLR cameras. The new DigiFire 8 and 12 models have all the features of our former DigiFire 7 and 10 models, plus some impressive new improvements.

Both models feature:

  • Heavy-Duty, individually adjustable power output for up to 4 heaters.
  • Built-in 8V DSLR Power Supply. Just add our DSLR Battery  Adapter and power you DSLR from the Dew Controller.
  • 2 DC Accessory Ports
    • 1 Port 12V up to 15 Amp output
    • 2nd port programmable for 12V OR 8V (DSLR Camera Power). Up to 1.5 Amp output
  • 15 Amps total power (max 7 Amp with Cigarette Lighter Plug).
  • Dimmable lights! In fact, after 2 minutes, they shut-off! Pressing 1 of the 2 control buttons will "wake-up" the lights again
  • User Changeable Cord. We strongly recommend you "ditch the Cigarette Lighter Plug". Chose you own or add our Anderson Power Pole pre-welded (glued) plugs to get all 15 Amps the unit is capable of delivering.
  • Cord Management - Power other devices using the 2 DC Accessory Ports. For example, our 12V USB Hub.
  • Low Voltage Cut-Off - A Kendrick Standard that saves your battery from permanent destruction.
  • NEW>> Disable Low Voltage Cut-Off. We don't recommend it, but if you want to drain your battery beyond repair it is now possible.
  • Reverse Polarity Protection
DigiFire 12 Controller DigiFire 12 - Temperature Sensing Controller

All the features of the DigiFire 8, PLUS:

  • Temperature Sensing control for 2 of the 4 heater ports.
    • Heaters are only powered when the temperature of your optics reaches the level you choose. It works on the difference between Ambient Air Temperature and the temperature of your optics. Choose a setting that is 0-10 C°
    • Prevents unnecessary over-heating which degrades image quality
    • Saves battery power
  • Traditional "Duty-Cycle" settings are also available on all 4 heater ports
  • Our new temperature sensors are much more accurate and do NOT require "calibration".

Sensors included: 1 Ambient Air Temperature and 1 Optic Temperature Sensor. Additional Sensors are optional.

Product Availability Note: In Stock!

†The DSLR power supply is designed for normal astrophotography applications. Specifically, long exposures with momentary delay between exposures. It is NOT design for daytime “burst” exposures.

SKUDescriptionPrice 
2001-8 DigiFire 8 - 4 Channel Controller with 4 heater outputs, 2 DC Accessory Ports, 8V DSLR Power Supply, 15 Amps CAN $282.00
2001-12 DigiFire 12 Temperature Sensing Controller with 4 heater outputs, 2 DC Accessory Ports, 8V DSLR Power Supply, 15 Amps CAN $374.00
2001-12-SCBL6 DigiFire 12 Temperature Sensor and 6' Cable CAN $60.00
208-IPP-ACKIT Anderson Power Pole Pre-Welded Plug Kit with 30 Amp Contacts CAN $8.00
208-IPP-AC-UF Anderson Power Pole Non-Welded Plug Kit with 30 Amp Contacts CAN $7.00

 

Premier Controller

The controller shown in the images here is what we call our "Observatory" version. Unlike the standard version, for which images will be coming in a week or two, it has no display.

There are two versions of it (both remotely controllable). One has a touch screen and another (known as the Observatory version) without any screen at all, designed strictly for remote control.

A remote control web app is also underdevelopment and is looking very nice!

Both version (Observatory and Display) can be operated remotely, using either:

  1. USB to PC for local remote control.
  2. Bluetooth to Android devices for local remote control.
  3. RJ11 (using RS-485 communication protocol) for long distance remote control.

Here are some of the new controller specs (specs may change without notice):

  • 3.5" touch screen, (resolution 320 by 240).
  • An Observatory version of the controller without a touch screen and designed for users with dedicated remote control observatories.
  • 2.5mm Audio Jacks for optic sensors.
  • USB-A port for External ambient and humidity sensor (various cable lengths to suit your needs).
  • USB-B remote control port for short distance communication.
  • RJ11 port for remote control port for long distance communication (over a kilometer possible).
  • RJ11 port for connection and remote control of peripheral devices.
  • Bluetooth capable. Android app under development
  • Remote control via a web browser. Web app and tiny remote web server under development.
  • Mating Terminal Block power input. This will allow users to terminate the controller power cable in a connector of their choice.
  • New optic sensor design.
  • Operating voltage 12 to 28 vdc.
  • Upgradeable firmware via the internet.
  • 3 dedicated 12 volt power ports to power peripheral devices.
  • 2 of the dedicated 12 volt power ports will be probramable down to 8 vdc to allow powering of DSLR cameras.This feature will require the purchase of one of our DSLR DC Battery couplers and cables found at the bottom of this page.
  • LEDs on the heater ports.
  • LEDs on the programable power ports. (LED will come on when that particular port is programed at 8 volts DC to differentiate it from a 12 volt port)
  • LED for power on.
  • ON/OFF switch

The feature functions that are built into the firmware are:

  • Temperature sensing.
  • Humidity/Dewpoint sensing.
  • Optic temperature above ambient temperature control.
  • Dewpoint control.
  • Fixed temperature control.
  • Power to heater % control.
  • Choose Celsius or Fahrenheit screen display.
  • Screen brightness control.
  • Night Mode red screen.
  • Low voltage cut-off. For those who do not want Low Voltage Cut-off, this function can be disabled via the display screen and/or the remote control software.
  • Battery voltage display.
  • Air temperature, Optic Temperature, Humidity and Dewpoint display.
  • and more!

If you want to be notified when the controller becomes available, please join our Premier Controller Notification List. This will be a one time only mailing and you will not receive other product notifications from us.

The old style Premier Controller is still supported and we have moved the information on this controller to it's own page and can be found at the link below.

Link to old #2002 PREMIER DIGITAL CONTROLLER

 

DigiFire 10 Controller - Discontinued

DigiFire 10 ControllerThis model is now discontinued and will be replaced by the new DigiFire 12 available May 2015. However we still offer accessories to current DigiFire 10 owners

An optional lanyard (#2002-LNYRD) is available for anyone preferring to hang their controller or protect it from scratches, dings and nicks.

Controller Pouch
We offer a leatherette pouch (#2001-CP) that will contain the DigiFire controller and protect it from scratches. It can be left on the controller permanently and has rings to attach 2002-LNYRD lanyard (not included). There are holes in the pouch to allow access to all the heater ports.

DigiFire 10 Operating Manual (PDF)

Controller Feature Comparison (PDF)

DigiFire 10 Operating Video, Part 1 (YouTube)

DigiFire 10 Operating Video, Part 2 (YouTube)


SKUDescriptionPrice 
2001-10 SCBL-4 4' Optic Temperature Sensor with cold flex cable for DigiFire 10 controller CAN $65.00
2001-10 SCBL-6 6' Optic Temperature Sensor with cold flex cable for DigiFire 10 controller CAN $67.00
2001-10 SCBL-8 8' Optic Temperature Sensor with cold flex cable for DigiFire 10 controller CAN $70.00
2001-CP Leatherette pouch for DigiFire 7 and 10 controllers. (lanyard not included) CAN $46.00
2002-LNYRD Lanyard for Kendrick Digital Controllers (can be attached to back of the controller CAN $3.00

 

DigiFire 7 Controller - Discontinued

This model is now discontinued and will be replaced by the new DigiFire 8 available May 2015. However we still offer accessories to current DigiFire 7 owners

 Controller Pouch
We offer a leatherette pouch (#2001-CP) that will contain the DigiFire controller and protect it from scratches. It can be left on the controller permanently and has rings to attach 2002-LNYRD lanyard (not included). There are holes in the pouch to allow access to all the heater ports.

DigiFire 7 Operating Manual (PDF)

Controller Feature Comparison (PDF)

DigiFire 7 Operating Video (YouTube)


SKUDescriptionPrice 
2001-CP Leatherette pouch for DigiFire 7 and 10 controllers. (lanyard not included) CAN $46.00
2002-LNYRD Lanyard for Kendrick Digital Controllers (can be attached to back of the controller CAN $3.00

 

How To Use The System

We recommend that you put your heaters in place at the beginning of an observing session and turn your controller on right away. If you are using Premier Heaters, or heaters for Newtonian or RC Telescopes, we recommend a controller setting that represents about 20 to 40% If you are using FireFly or MICRO FireLite Heaters, we recommend a setting of about 60 to 80%.

If moisture has already condensed on your optics, we recommend covering the optics, turning the heaters on high and waiting 20 to 30 minutes. Once the moisture has cleared, lower your controller setting and resume observing.

 

Power Requirements

Power Supplies Our dew control systems require 12 volts DC. If you are using a battery to run the system, we recommend a 5 amp hour battery as a minimum. If you want to run the system from a wall plug, you will need a 120 volt to 12 volt DC "Regulated" step down power supply with a minimum output of 5 amps.

Pictured to the right are our Regulated 120 volt to 12 volt DC power supplies which are excellent for operating our systems from a wall socket. We also build portable 12 volt power packs and offer other power solutions that can be used with all your astro equipment that is used in the field. See Power Packs for more information on the power systems we offer.

#208-PS25A power supply. How much power do you need? Add up the current draw from all connected equipment and then multiply by at least 2. Generally, you want a power supply that can deliver twice as much power as you think you might need. Otherwise, an overworked PS is going to fail or even get excessively hot.

NEW Big-Honkin 25 Amp Power Supply (110VAC or 220VAC)! Big mounts, cooled CCD Cameras, Dew Heaters use a lot of juice. 25 Amps is enough power to run just about any device you would ever need.

SKUDescriptionPrice 
2085 120v 5 amp power supply, converts 120v to 12VDC. 5 amp output IN STOCK CAN $139.00
2078 120v 10 amp Power supply, converts 120v to 12VDC. 10 amp output. IN STOCK CAN $240.00
208-PS25A 110/120VAC to 12 vdc, 25A power supply. North American Plug CAN $329.00
208-PS25A-EU 220/240VAC to 12 vdc, 25A power supply. EU (type "F" Plug) CAN $339.00
208-PS25A-UK 220/240VAC to 12 vdc, 25A power supply. UK (type "G" Plug) CAN $339.00

 

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