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permanently mounted?  Since everyone’s situation will be a bit different, these instructions are more guidelines rather than 
specific “follow these to the letter or else” instructions. 

If it is practical, you may find it most convenient to first set up your mount following the above instructions and get it pretty well 
polar aligned.  The two axes must be assembled to run your cables.  You won’t do a final drift alignment yet, but you will want to 
get close.  This is especially the case for those of you who are using a polar alignment scope like our PASILL4.  You do not want 
to have the polar scope installed when the cables are being run through the inside of the mount or you might scratch the polar 
scope’s objective.  However, as you will see, there is a way to use your polar scope with the cables already in place, though this 
may not be possible in all cases.  Do not have your telescope or mounting plate attached yet. 

Remove the D

ECLINATION 

H

UB 

P

LATE

 off of the D

ECLINATION 

A

XIS 

H

UB

 by removing the six 1/4-20

 X 

3/4

 

F

LAT 

H

EAD 

S

OCKET 

C

AP 

S

CREWS

 around its perimeter.  Remove the polar scope from the RA axis if you are using one.  Finally, remove the P

OLAR 

S

COPE 

A

DAPTER

 (with P

OLAR 

S

COPE 

C

AP

) and raise the two C

ABLE 

A

CCESS 

C

OVERS

 (one on each axis) to the open position.  You are now 

ready to put in your cables.  Note: starting in April, 2007 with Ser. # M10053 the P

OLAR 

S

COPE 

A

DAPTER

 is a bit larger and has a 

knurled grip for easier removal.

  

Cable Installation – the First Time 

Cables can be inserted either from the top (through the 
D

ECLINATION 

A

XIS 

H

UB

) or bottom (through the polar scope 

end of the RA axis), but the simplest way will usually be to 
insert the cables through the S

IGHT 

H

OLE 

/

 

C

ABLE 

A

CCESS 

C

OVER

 on the declination axis.  The easiest trick for 

inserting the cables, if you will be routing cables out 
through the D

ECLINATION 

A

XIS 

H

UB

 (as is likely), is to turn 

the RA axis so the C

OUNTERWEIGHT 

S

HAFT 

A

DAPTER

 is 

pointing up and south and let gravity do the work.  Always 
start by running the cables with the largest connectors 
first.  Insert the telescope end of the cable into the S

IGHT 

H

OLE 

/

 

C

ABLE 

A

CCESS 

C

OVER 

on the dec axis and guide it 

“down” and out the D

ECLINATION 

A

XIS 

H

UB

.  Insert the 

opposite end in the same opening and guide it either out 
the RA’s C

ABLE 

A

CCESS 

C

OVER

 or out the bottom of the RA 

axis.  If you are routing out the RA’s C

ABLE 

A

CCESS 

C

OVER

, 

you can reach in the bottom of the RA axis to help you 
guide the cable end out the access hole. 

When all the necessary cables have been run through the 
mount, turn the RA axis so that the mount is in its normal 
position with the C

OUNTERWEIGHT 

S

HAFT 

A

DAPTER

 pointing 

down and north.  Adjust the amount of each cable that you 

will need sticking out through the D

ECLINATION 

A

XIS 

H

UB

 to adequately reach its 

electronic device.   When determining the length, be sure to run the cable 
through the C

ABLE 

C

HANNEL

 and allow enough slack so that there will be no 

tension on the cable’s plug.   Make sure you allow for focuser travel.  Don’t allow 
too much slack, however, or you will defeat the whole purpose of hiding the 
cables inside the mount.   Be sure that you route each cable through the 
appropriate C

ABLE 

C

HANNEL

 side for the side of the telescope where it will plug in.    

Also, keep in mind any other places where you may wish to tie your cables like 
on the end of a mounting plate.  Cables for CCD cameras should be tied off to 
the focuser or the very back of the mounting plate.   

Once the cables are routed through the mount, and you have the proper amount 
sticking out the top of the D

ECLINATION 

A

XIS 

H

UB

, you are ready to replace the 

D

ECLINATION 

H

UB 

P

LATE

.   Be sure that the cables are seated well in the two 

C

ABLE 

C

HANNELS

 and that they are not being pinched by the plate.  Put in two 

screws, one each on opposite sides of the plate and snug them down.  Re-check 

that none of the cables have been pinched and then tighten the two screws firmly.  If you are using the FP1800, the RP900 or 
the Q4047 (with DOVE08) as your telescope mounting plate, install it now using the four provided screws in the remaining four 
holes.  If you will be using one of the other telescope mounting plates (FP1500, DOVE15, DOVELM2 or DOVELM16S), first 
install the remaining four screws from the D

ECLINATION 

H

UB 

P

LATE

, and then install the mounting plate with the correct fasteners 

that were provided. 

Where the cables emerge (RA C

ABLE 

A

CCESS 

H

OLE

 or bottom of RA axis), make sure that nothing will be hanging or pulling on 

any of the cables.  You may wish to bundle the cables together and tie them off to a tripod leg or pier strut to eliminate potential 
tripping hazards.  Run them carefully to wherever they will be plugged in (laptop, heater controller etc.) and try to avoid creating 
tripping hazards.  If you have run the cables out the RA’s C

ABLE 

A

CCESS 

H

OLE

, replace the P

OLAR 

S

COPE 

A

DAPTER

 and P

OLAR 

S

COPE 

C

AP

.  Do NOT over-tighten the P

OLAR 

S

COPE 

A

DAPTER

.

  

You can also partially close the S

IGHT 

H

OLE 

/

 

C

ABLE 

A

CCESS 

C

OVER

 

18 

Содержание Mach1GTO

Страница 1: ......

Страница 2: ...Plate 12 Assemble Counterweight Shaft 13 Optional 10 7 x 1 875 Counterweight Shaft 14 Attach Mounting Rings purchased separately 14 Fine Polar Alignment 14 Methods for fine polar alignment 15 Altitud...

Страница 3: ...are 24 Cleaning and Touch up 25 Mount Maintenance 25 ADDITIONAL TIPS AND SUPPORT 25 TROUBLESHOOTING 25 RECOMMENDED READING FROM OUR STAFF 28 CHARACTERIZING THE DEC AXIS MOTIONS 29 ASTRO PHYSICS MOUNTI...

Страница 4: ...aft M1053 and Safety Stop M12676 for use with 5 lb 5SCWT 10 lb 10SCWT and 18 lb 18SCWT counterweights Handy for travel or if you already own a 900 or 1200 series mount Polar Alignment Scope with Illum...

Страница 5: ...e weights as 900 and 1200 series mounts Latitude range 0 to 70 degrees with or without polar scope attached Azimuth adjustment Approximately 25 degrees 12 5 deg from center Motors Zero cogging servo m...

Страница 6: ...lete remote control of all Astro Physics GTO mounts It derives its name from its most distinctive feature pulse guiding which can improve unguided tracking Specifically it can help correct tracking er...

Страница 7: ...and handling Please refer to the following illustrations The parts are labeled so that we can establish common terminology Throughout the text SMALLCAPS are used to refer to parts that are illustrated...

Страница 8: ...the COUNTERWEIGHT ADAPTER down and the DECLINATION HUB PLATE up as in the Assembly Diagram Unlike the bigger 900GTO and 1200GTO mounts the dec axis of the Mach1GTO must be straight and square to the R...

Страница 9: ...g Pier are included with the pier Please refer to those instructions for assembly adjustment and leveling procedures Your Mach1GTO will fit into the 6 Eagle Adjustable Folding Pier without any additio...

Страница 10: ...alignment without having the pier level but it is more difficult With a pier that is not level each adjustment in azimuth also causes a minor shift in altitude and vice versa This is why we have inclu...

Страница 11: ...alignment just snug down the AZIMUTH LOCK KNOBS One full turn of the AZIMUTH ADJUSTER KNOB is approximately 1 37 degrees 82 arc minutes 4 Altitude latitude adjustments The altitude adjustment mechani...

Страница 12: ...ich may be sufficient for casual visual observations if you are not planning to slew to target objects with the keypad When the R A motor is engaged the power is plugged in it will compensate for the...

Страница 13: ...h a large plate it may be too large for this mount 15 RIBBED MOUNTING PLATE 900RP The finished plate is 0 75 thick 15 long and 6 5 at its widest point The width of the plate tapers to 4 75 A pair of k...

Страница 14: ...late down The remaining two can then still hold the DECLINATION HUB PLATE in place on the DECLINATION AXIS HUB while the mounting plate is being attached The four remaining holes are more than adequat...

Страница 15: ...ad luggage compartment but you still have to be able to lift it up that high You must also be aware of all rules and regulations regarding weight limits and allowable case sizes not to mention potenti...

Страница 16: ...e To use one of these earlier polar scopes screw the unit into the adapter and then back it off to align Polaris relative position to the pole Proceed normally turning the polar scope wherever the ins...

Страница 17: ...h clutch knob has a 3 16 hex socket for tightening with an Allen key Using the provided hex key you can lock up the clutches so that only the worm drives are able to move each axis You should NOT atte...

Страница 18: ...cially vulnerable when a German Equatorial Mount was swapping sides to point at the other side of the meridian The problem was that all these wires going to all these different locations had to deal w...

Страница 19: ...reach in the bottom of the RA axis to help you guide the cable end out the access hole When all the necessary cables have been run through the mount turn the RA axis so that the mount is in its normal...

Страница 20: ...in place But what about polar alignment if the cables have been run out the bottom of the RA axis or if there are very many cables Simple Set your mount up on its tripod or pier but don t tie off or...

Страница 21: ...weight of the cables doesn t cause movement flexure in the imaging system over a long exposure Please feel free to contribute hints and tricks of your own for future editions of this manual At Astro P...

Страница 22: ...try to completely remove the bolts The servo drive box will now separate from the axis To re install a servo drive box carefully set the box into position making sure that the worm gear settles into...

Страница 23: ...g then turn RS 232 Connectors These serial port connections are used to connect your mount to your PC computer You must provide your own straight through non crossing cables with a 9 pin DB9 male conn...

Страница 24: ...purchased separately or as part of a CCD Imaging Camera or Autoguider The autoguider will be functional and ready to go as soon as you plug it in Please refer to the appropriate manual from the manuf...

Страница 25: ...e added This combination is ideal for low wear since the damping grease portion allows the grease to stay on the teeth and not get wiped off by the motion of the worm Although this combination works w...

Страница 26: ...oblem but it is still a good idea to periodically once or twice a year inspect and if necessary re tighten any easily accessible fasteners Additional maintenance information can be found below in the...

Страница 27: ...y because of the higher gain with this much voltage The system works very well with 15 16 volts The Mach1GTO should work very smoothly at 12 volts For polar alignment I am using declination drift tech...

Страница 28: ...chine oil to the center posts of the individual gears Just remove the cover on the gearbox and add the oil drops The noise is nothing to worry about Refer to the section of this manual entitled Slewin...

Страница 29: ...n regarding the principles of mount construction and operation using setting circles eyepiece projection etc Illustrations and formulas galore Many of the instruments pictured are outdated however the...

Страница 30: ...CHARACTERIZING THE DEC AXIS MOTIONS 29...

Страница 31: ...4 20x5 8 Socket Head Cap Screw 4 20x5 8 Flat Socket Ca Screw 1 20x5 8 Flat Socket Cap Screw 2 20x1 Socke Head Cap Screw 6 20x1 Flat Socket Cap Screw and 6 20x5 8 Flat Socket Cap Screw Use Q4047 Adapt...

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