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Sky-Watcher EQ8

 
 
Price
$4,559.00
Quantity

Description

The Sky-Watcher EQ8 High Precision EQ mount is pier tripod - based. It comes with the SynScan GOTO hand controller,  2x10kg counterweights and will carry a payload of 50kg effortlessly. The patented Freedom Find (dual-encoder) technology allows the telescope to be moved manually whenever the user wishes - with no need for re-alignment!

  • 50 kg Payload Capacity
  • Super Smooth PE Curve
  • Freedom Find
  • Whisper Slew
  • Small Backlash
  • Auto-Home Function
  • DSLR Interface
  • Programmable Permanent Periodic Error Correction
  • Precise polar-alignment routine with SynScan hand controller
  • AdjustablePier tripod (0.75m - 1.00m)
  • Sturdy Storage Case for EQ Head


Freedom Find™ - tracking made easy!

Sky-Watcher's EQ8 mount now includes patented Freedom Find (dual-encoder) technology which allows the telescope to be moved manually or electronically in either axis without losing its alignment or positional information. After moving to a new object the telescope will automatically begin to track the new object accurately. No re-setup is required in one observing session.

 

The Sky-Watcher EQ8 mount is equipped with auxiliary encoders on both the R.A. axis and Dec. axis. Therefore, the mount can keep tracking its current position even when a user unlocks the clutches and rotates the mount in R.A. axis and Dec. axis by hand.  With this feature, a user can manually operate the mount anytime without worrying about losing the mount’s alignment status.

 

When the user wants to operate the mount with the SynScan hand control again, no alignment is required and all that is needed to be done is to re-lock the clutches. This feature can be enabled or disabled on the SynScan hand controller.

 

Permanent Periodic Error Correction

The Sky-Watcher EQ8 mount is equipped with an index on its R.A. worm. Thus the motor controller can keep tracking the current position of the worm. After a proper PEC training routine, in which the training data is stored in the motor controller permanently, a user can start the periodic error correction (PEC) at any time to improve the tracking performance for short focal length astrophotography.

 

A training process is not required in the next observing session (assuming that the polar alignment is accurate), thus this is a Permanent Period Error Correction (PPEC). A user can train the mount with manual guiding or auto-guiding. For detailed instructions please refer to the SynScan hand controller manual. 

 

Batch Exposure Function

The Sky-Watcher EQ8 mount is equipped with a SNAP port which can control the shutter release of a camera. Working with the SynScan hand control’s “Camera Control” function, a user can take batch exposures when doing astrophotography. Up to 8 groups of “Exposure-time & Frames” combinations can be set on the SynScan hand controller. For detailed information, refer to the SynScan hand controller manual.

 

Auto-Home Function

The Sky-Watcher EQ8 mount is equipped with two home position sensors. Working with the SynScan hand controller, the mount can be placed to the same home position after cycling the power.

This feature is almost essential for anyone wishing to control their mount remotely. If power fails the homing function allows the mount to easily re-establish its position. The mount will always know where its slew limits are eliminating the risk of driving your telescope and imaging equipment into the pier. For detailed information, refer to the SynScan hand controller manual.

 

Dual Encoder Design

With the patented dual encoder design, you may move the telescope to any positon manually or electronically without deactivating the tracking mode first.  After moving to a new object the telescope will automatically begin to track the new object accurately. No re-setup is required in one observing session.

 

Motors

It utilises 0.9 degree per step bipolar stepper motors to get high resolution. It uses stepper motors without reduction gears to drive the worm shaft directly - so as to remove the drive errors caused by reduction gears. This design also eliminates backlash as there are no additional gears between the motors and the worm drive.

 

Computer Operation

Couple this solidly-built mount withthe included SynScan computer controller to utilise many of the same functions and feature as Sky-Watcher's most advanced SynScan Mounts. It can also be controlled by SynScan Tour or EQMOD using the Shoestring USB2EQ5 cable directly to the mount without the need for the SynScan Controller.

Technical Data for the Sky-Watcher EQ8 German Equatorial Mount

 

EQ Mount

EQ8 High Precision EQ Mount

Tripod

Pier Tripod

Power Supply

12v DC

Tripod / Pier Weight

29kg

EQ Head Weight

24.5kg (without C/W Shaft)

Counterweight

2x 10kg supplied. Additional available

Hand Controller

SynScan V3.27 +

Payload Capacity

50kg

R.A Worm Gear

D= 219.5mm,  435 teeth, aluminium

Dec Worm Gear

D= 219.5mm,  435 teeth, aluminium

R.A Axis

D=55mm, Aluminium

Dec Axis

D=55mm, Aluminium

Counterweight Shaft

D=31.5mm  L=400mm

Latitude Adjustment

10°  -  65°

Azimuth Adjustment

 +/- 10°

Polar Scope

Optional External Polar Scope

Polar Alignment

Software adjustment or using External Polar Scope

Dual Encoder Control

Yes

PPEC

EQ Mode

Initial Position

R.A and Dec. reset when powered on

R.A Limitation

Mechanical Limitation

Motor

High resolution 12v DC Stepper Motors

Tracking Accuracy

0.1164 Arc Seconds (on motor)

Tracking Speed

Sidereal rate, Solar Rate, Lunar Rate, "Pec + Sidereal"

Tracking Mode

Dual or Single Axis Tracking

Tracking

EQ Mode

Database

42,000 Objects

Finish

Black Anodised