Explore Scientific DOB1245-01 12" f/5 Truss Tube Dobsonian Telescope with Hybrid Finder Scope Base

User Manual - Page 7

For DOB1245-01.

PDF File Manual, 18 pages, Read Online | Download pdf file

DOB1245-01 photo
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7
Assembly
Now look at the mirror box from above. You will notice threaded rods that are sticking out of the corners of the
mirror box. There is a wing nut riding on each of those inward pointing threaded rods. Unscrew the wing nuts to the
end of the threaded rods, making sure that they don´t come off and risk falling onto the main mirror.
Unwrap the truss pairs. Each pair of trusses is connected by a metal bracket that has a groove on the other side.
Slide the bracket with the groove over the threaded rod and fasten the trusses with the wing nut.
Important: After you have fastened the wing nut, the trusses will be secured to the mirror box BUT they will still be
able to swing freely from side to side, which means they could bump into surrounding equipment or people if not
carefully monitored. To prevent the trusses from moving too freely, fasten the screws that hold them a bit tighter
but remember that you have to move the trusses later so do not overtighten them.
Next, it is time to attach the secondary mirror cage unit using the four short screws with knobs. The telescope is
designed to have the focuser oriented on the right side, so that the red dot finder is above the focuser when you
move the telescope.
Important: During the attachment of the secondary mirror cage unit please make sure that you have control of
the secondary mirror cage at all times. If you are doing this for the first time you will need a few minutes to get
accustomed to the procedure because you have to hold the secondary mirror cage with one hand and align the
truss holes and the threaded hole of the secondary mirror cage and insert the screw with the other hand. If you are
doing this for the first time, the help of a second person is very handy.
Align the holes in the upper ends of an opposing pair of trusses, insert a screw through both of them and insert the
screw into one of the threaded holes in the lower brackets of the secondary mirror cage. Do not fully tighten the
screws until all four screws are inserted correctly – trying to force a screw into the threaded hole on the secondary
unit will damage the thread. If assembled correctly, that screws will go into the threads without the use of force.
After all four screws are placed into the threaded holes in the secondary unit, tighten the screws being sure not to
overtighten.
Now attach the stray light cover to the secondary unit by pressing the four fastening pads onto their corresponding
counterparts on the secondary unit and attach the red dot finder by sliding it into its bracket.
The telescope is now fully assembled.
Setting Up Power Suppy for the Fan:
NOTE:Only use the supplied Battery Pack or a suitable power supply unit (DC 12V) for the power supply!
1. Insert 8 x 1.5V type D batteries (not included) into the battery pack compartments as marked.
2. Plug the DC plug of the Battery Pack into the corresponding DC-in socket on the back of the main mirror box. The
fans run automatically as soon as the power connection has been established.
NOTE:Disconnect the power when the fans are no longer needed.
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