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ASA DDM85 Standard Direct Drive EQ Mount 65kg Load - DEMONSTRATION AVAILABLE!

ASA DDM85 Standard Direct Drive EQ Mount 65kg Load - DEMONSTRATION AVAILABLE!

can be shipped within 30 days

Price includes VAT, plus delivery

The DDM85 is ASA's workhorse for professional Astrophotographers and is suitable for portable use. All ASA mounts feature Renishaw Absolute Encoders and a custom designed Direct Drive system. Together with propritry plate solving based software and internal monitoring of position 100x / second. ASA Mounts are able to acheive unparalleled guide free tracking performance. Until you experience it, you won't believe it!


ASA's DDM85 mount has already received praise from acclaimed astrophotographers worldwide. Many of them have completely abandoned auto-guiders and therefore don´t have to sort through a variety of images any more. Many DDM85 series mounts are used in remote installations. The DDM85 RA and DEC axis is easily seperated and run on a 12V power supply making it transportable and usable for imaging in the field.


All power and data cables are internally wired through a large dimensional hollow axle. The DDM85 Premium version of the mount can also be fixed to an equatorial pier (optional) rendering meridian flips obsolete. The DDM85 series is available in three different models as follows:


BASIC: This has an imaging capacity of 45kg (100 lbs) . Mounted on a moveable base plate, a fast polar alignment can be conducted using 4 adjustment screws. The screws can easily be fastened by hand and are also big enough to use at night.


STANDARD: Imaging capacity 65kg (143 lbs). The standard version uses the DDM85's traditional polar height cradle. This model is also available in a 24V version which increases load capacity to 75kg.


PREMIUM: This model has a much higher imaging capacity of 100kg (220 lbs). It is designed to be used with a custom made equatorial pier.


The tracking accuracy of the DDM85 range is outstanding. Guiding systems are normally unecessary and can actually make tracking worse when used with the DDM85. This is impressively demonstrated through testing. Tracking without correction via autoguider over a period of one hour shows 0.68” peak to peak and 0.18” RMS, respectively. The setup used for this record was: ASA DDM85 and ASA 16N OK3 Astrograph.




To confirm the superior performance of ASA Mounts, we keep an ASA based demonstration system at our hosting partner e-Eye. This system is based upon an ASA N250 Astrograph and ASA DDM85 Basic Mount. This allows us to demonstrate the superiority and simplicity of an ASA system and its guide free performance. We can also offer a demonstration of the DDM85 Standard by arrangement with one of our customers. Please contact us if you are interested in experiencing the performance these systems offer.


Supplied with the DDM85 Standard are;


1pc Autoslew Control Software

1pc Sequence Imaging Software

1pc 4.5kg Counterweight

1pc 9kg Counterweight

1pc 600mm Counterweight Shaft

1pc Universal (Losmandy / Vixen) Saddle Clamp

1pc 12V PSU

2pc USB 2.0 Cable (1.8m)

4pc Accessory Cables (Power / Focuser / Scope / Fan)

NOTE: No tripod or pier is supplied with this mount. We recommend the Astrograph Field Pier for optimal performance with mobile systems

General Specifications


Type: German Equatorial

Axis Diameter: 85mm Hollow Axis Bearing 4 Pre-Loaded Taper Roller Bearings 130/85mm

Weight: (No Shaft) 43.5kg (Both Axis)

Load Capacity: 65kg (Imaging / Instrument)

Drive: Noiseless High Torque Direct Drive on both Axis

Voltage: 12v Amperage 0.4-0.8A Max 10A

Pointing Accuracy*: <12" RMS with Pointing File

Tracking Accuracy*: 0.35" RMS over 5 minutes

Encoder Resolution: 0.02" on the axis

Slew Speed: 13° Second

Counterweight Shaft: 60mm High Grade Steel

USB Hub: Internal USB 2.0

Additional Connections: Data, Fan Remote Capable Yes


*As tested with an ASA telescope






Product Note Status Price
EMC Astro S130 Pier System EMC Astro S130 Pier System
£1,349.00 *

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