Copyright © 2016, Astro Devices. All rights reserved. 1 Explore Scientific Truss Dobsonian – 10” to 16” : Encoders Installation Specifications: Altitude Encoder resolution: 10” - 304000 steps per revolution 12” - 321300 steps per revolution 16” - 370732 steps per revolution Azimuth Encoder resolution: 8192 steps per revolution Current consumption: 20 mA – altitude encoder, 10 mA – azimuth encoder Note: Please set the encoder steps to the values corresponding to the model of your telescope: Do not subject encoder disks to magnetic fields as it may affect the magnetization of the magnetic multi-pole rings. Please make sure that you have all the parts included in the kit:
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Copyright©2016,AstroDevices.Allrightsreserved.
1
ExploreScientificTrussDobsonian–10”to16”:EncodersInstallation
Specifications:AltitudeEncoderresolution:
10”-304000stepsperrevolution12”-321300stepsperrevolution16”-370732stepsperrevolution
AzimuthEncoderresolution:8192stepsperrevolutionCurrentconsumption:20mA–altitudeencoder,10mA–azimuthencoderNote:Pleasesettheencoderstepstothevaluescorrespondingtothemodelofyourtelescope:
Donotsubjectencoderdiskstomagneticfieldsasitmayaffectthemagnetizationofthemagneticmulti-polerings.
Pleasemakesurethatyouhaveallthepartsincludedinthekit:
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AzimuthencoderinstallationYouwillneedthefollowingpartstoinstalltheazimuthencoder:
Pleaseremovethemirrorboxfromtherockerbox:
Pleaselocatethethreadedholeinthepivotbolt:
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YouwillneedthesetscrewandtheAllenkey:
PutthesetscrewintothethreadedholeandmakeacoupleofturnsbutleavetheAllenkeyinthesetscrew:
Cleanthesurfaceinthebackwithanalcoholwipe–wheretheencoder’sfootwillbeglued.Removetheprotectivefilmfromtheencoder’sfoot:
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Tightenthesetscrew
Theazimuthencoderisnowinstalled:
Installtheencodercable:
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AltitudeencoderinstallationYouwillneedthefollowingpartstoinstallthealtitudeencoder:
Putthemirrorboxintotherockerboxandcleantheinternalsurfaceofthealtitudebearing(onthesamesideaswherethefocuseris)withthealcoholwipe:
Installtheencoderreaderstartingwiththelefthole:
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Thenputthesecondknobin
Positionthetelescopevertically.Nowyouneedtouseapenciltomarkthestartofthemagnetictape–itshouldbeapproximately10-15mm(~1/2”)fromtherightsideofthereader:
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Drawalinewiththepencil
Nowremovethereader
Removetheprotectivefilmfromthebackofthemagnetictape–donotremoveitcompletely,justafewcentimeters:
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Startgluingthetapealongtheouteredgeofthealtitudebearing–makesureitgoespreciselyalongtheedgeand.
Pressonthetapefirmlywithasoftcloth:
Hereisthefinalresult
FINISHED!
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