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#19979 - DirectSync SSX35 for SharpStar Focusers
DirectSync SSX35 Installation
Step-by-Step Instructions for Installing the DirectSync SSX35 Motor
Assembly to your SharpStar/Askar focuser.
The DirectSync SSX35 motor assembly fits
directly in place of the coarse focus knob on
the left side of the Sharpstar 3.4-inch dual-
speed focusers. The right-side coarse and
fine focus knobs are left intact on the focuser
while the DirectSync clutch mechanism
offers easy engagement and disengagement
of the stepper motor for manual focus.
When properly mounted, the DirectSync
SSX35 provides approximately 1 micron per
step resolution and superior repeatability
and load carrying capacity. A digital
temperature sensor is integrated into the
DirectSync motor assembly. Connection to
the observatory or telescope control computer can be made using any standard USB A-B cable. A
separate 12VDC power connection provides sufficient power to vertically lift cameras or instrument
packages exceeding 10 kg. Optec's new ASCOM Alpaca driver and field-proven FocusLynx Commander
software round out the package for complete remote telescope focusing solution.
Sharpstar / Askar Focuser Compatiblity
The Sharpstar 3.4-inch focuser is included on several Askar and re-branded telescopes including:
Askar 107PHQ, 130PHQ and 151PHQ,
Askar FRA500,
William Optics R&P 33,
ZWO FF107-APO andFF130-APO.
Telephone: 616-897-9351 · Fax: (616) 897-8229 · Toll Free: 888-488-0381
199 Smith Street · Lowell, Michigan 49331 · U.S.A.
sales@optecinc.com
http://www.optecinc.com
·
#19979 - DirectSync SSX35 Installation Instructions - Revision 1
SharpStar, Askar, and ZWO copyright respective manufacturers.
www.optecinc.us
·
Page 1 of 10

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Summary of Contents for ASCOM DirectSync SSX35

  • Page 1 USB A-B cable. A separate 12VDC power connection provides sufficient power to vertically lift cameras or instrument packages exceeding 10 kg. Optec’s new ASCOM Alpaca driver and field-proven FocusLynx Commander software round out the package for complete remote telescope focusing solution.
  • Page 2 #19979 - DirectSync SSX35 for SharpStar Focusers DirectSync SSX35 Package Contents Confirm the contents of your FocusLynx DirectSync SSX35 package. The package should contain the following: • DirectSync SSX35 motor assembly, • 60-tooth drive shaft gear with 0.375” (9.5mm) long brass hub, •...
  • Page 3 199 Smith Street · Lowell, Michigan 49331 · U.S.A. Telephone: 616-897-9351 · Fax: (616) 897-8229 · Toll Free: 888-488-0381 sales@optecinc.com http://www.optecinc.com www.optecinc.us · · #19979 - DirectSync SSX35 Installation Instructions - Revision 1 SharpStar, Askar, and ZWO copyright respective manufacturers. Page 3 of 10...
  • Page 4 Don’t be too concerned if you cannot adjust the inaccessible screw. Your DirectSync SSX35 is now ready for FocusLynx Software Setup. Contact Optec Support if you have any questions or problems when installing your DirectSync SSX35.
  • Page 5 199 Smith Street · Lowell, Michigan 49331 · U.S.A. Telephone: 616-897-9351 · Fax: (616) 897-8229 · Toll Free: 888-488-0381 sales@optecinc.com http://www.optecinc.com www.optecinc.us · · #19979 - DirectSync SSX35 Installation Instructions - Revision 1 SharpStar, Askar, and ZWO copyright respective manufacturers. Page 5 of 10...
  • Page 6 With stepper motors speed and torque typically work inversely. That is, higher speeds will usually result in lower torque. The DirectSync Hi-Speed Focuser Type option coupled with the DirectSync SSX35 motor assembly can reliably handle payloads of 10kg (22 lbs.) or more.
  • Page 7 ASCOM driver. Step Size and Focuser Range The Stellarvue focuser drawtubes have a wide variety of travel ranges. The DirectSync SSX35 stepper motor has a step-size of approximately 1.1 microns so the default maximum position of 65,535 steps would allow for about 72mm.
  • Page 8: Temperature Compensation

    199 Smith Street · Lowell, Michigan 49331 · U.S.A. Telephone: 616-897-9351 · Fax: (616) 897-8229 · Toll Free: 888-488-0381 sales@optecinc.com http://www.optecinc.com www.optecinc.us · · #19979 - DirectSync SSX35 Installation Instructions - Revision 1 SharpStar, Askar, and ZWO copyright respective manufacturers. Page 8 of 10...
  • Page 9: Third-Party Software

    199 Smith Street · Lowell, Michigan 49331 · U.S.A. Telephone: 616-897-9351 · Fax: (616) 897-8229 · Toll Free: 888-488-0381 sales@optecinc.com http://www.optecinc.com www.optecinc.us · · #19979 - DirectSync SSX35 Installation Instructions - Revision 1 SharpStar, Askar, and ZWO copyright respective manufacturers. Page 9 of 10...
  • Page 10: Video Channel

    199 Smith Street · Lowell, Michigan 49331 · U.S.A. Telephone: 616-897-9351 · Fax: (616) 897-8229 · Toll Free: 888-488-0381 sales@optecinc.com http://www.optecinc.com www.optecinc.us · · #19979 - DirectSync SSX35 Installation Instructions - Revision 1 SharpStar, Askar, and ZWO copyright respective manufacturers. Page 10 of 10...