| KNOBS FOR MEADE 12
inch (30 cm) f/5 LIGHTBRIDGE PRIMARY AND SECONDARY |
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Fits: |
All Meade 12 inch (30 cm) f/5
Lightbridge telescopes. Primary and secondary knobs also fit Zhumell, GSO, and Hardin Optical 12 inch telescopes. |
| Knobs: Primary
collimation:
Primary locking:
Secondary collimation: |
Black plastic, 30 mm (1-1/4
inch) diameter, 5-point fluted
Black plastic, 25 mm (1 inch) diameter, knurled
Black plastic, 13 mm (1/2 inch) diameter, knurled |
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Threads: |
Black oxide or zinc plated steel
(primary adjustment); stainless steel (primary locking); stainless steel (secondary) |
| Price: |
$29
Primary knobs (3 adjust, 3 lock) |
|
| $20
Secondary knobs |
|
| $16
Primary mirror springs |
|
| $10
Low-profile azimuth lock knob, 5/16 inch (8 mm) diameter bolt |
|
| $10
Low-profile azimuth lock knob, 3/8 inch (9.5 mm) diameter bolt |
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Note1: Our primary knobs will clear the rocker box. |
| Note2:
One of the primary mirror knobs may
interfere with the cooling fan connector. The plug will fit properly between
the knob flutes (photo),
so leave this one knob stationary and collimate using the remaining knobs.
If desired, you can leave the factory collimation screw that is next to the
fan connector in place. |
|
Note3: Primary mirror springs as supplied by the factory can sag from the
weight of the mirror cell. Our stainless steel replacement springs are stronger and provide
adequate support to maintain primary mirror collimation. We recommend that
the mirror locking screws remain in place for additional control. |
|
Note4: Our low-profile azimuth
lock knob will not interfere with the OTA as it is moved near the
zenith. |
