10
© Baader Planetarium GmbH | 2019
11
Instruction manual: Baader Diamond Steeltrack
®
Diamond Steeltrack
®
drive block
(Example: BDS-RT Diamond Steeltrack
®
)
Changing drive block for left-hand use
(Example: BDS-RT Diamond Steeltrack
®
)
1
6
6
7
4
2
5
1.
Tension brake:
This screw works as brake for the diamond-coated drive axis.
There is a rotary-bearing mounted brake-pad between drive axis and screw.
This way, no pressure is applied onto the steel-plate which might otherwise
cause tipping when the screw is tightened.
BDS are rigid and slip-proof; they
don’t need a locking screw which presses onto tube or drive plate
. Because
of this construction motor focusers can be used any time, without risking
tipping of the image plane.
2.
Pressure screw:
Adjusts the contact pressure between the diamond-co-
ated axis and the steel-plate. By factory default, it holds up to 6 kg lifting
force. You can tighten it further, but then the focuser will not run as smooth-
ly. This 6-kg-setting was chosen for photographic use. You can untighten it
for visual use to make the focuser even more smooth-running.
3.
Screws for factory-setting of the optical axis. You should not change
these settings. For further information see page 12/13
4.
M6 sealing screws:
These screws have no function; you can remove them
to attach additional accessories.
5.
Attachment screws
connecting the reduction gear unit with the BDS-bo-
dy. To switch left/right-hand use, see page 11
6.
Coarse focuser:
One turn equals approx. 22 mm of movement
7.
Fine focuser:
One turn equals approx. 2 mm of movement
3.1
3.2
Lay the focuser horizontally on a flat table. Open and remove only the four
marked screws (see also #5 on page 10) with a 2.5 mm metric Allen wrench.
Now lift the whole drive block assembly gently. Make sure that the focuser
doesn´t slip away. Rotate the drive block by 180° and put it carefully back in
place. Then put the screws back in place and tighten them carefully with the
long side of the Allen wrench using only two fingers. Extensive force on the
screws may destroy the threads. Afterwards check the alignment and if the
focuser runs as smooth as before.
For Dos and Don’ts, please see also alignment instructions (page 12/13)
