| KNOBS FOR CELESTRON
9.25 inch (23.5 cm) f/10 SCT WITH STANDARD COLLIMATION SCREW THREADS (NOT
FOR CPC 925) |
|
 |
Fits: |
All Celestron 9.25 (23.5 cm) f/10 SCT
versions with standard 6-32 secondary screw threads (not for CPC 925). See
Notes below. |
| Knobs: |
Black plastic, 16 mm (5/8 inch) diameter |
| Threads: |
Black anodized aluminum alloy |
| Price: |
$16.95 |
|
| Note1: The factory dust cover will fit
normally with Bob's Knobs installed. |
| Note2: Knobs include a set of long spacers
so they clear the secondary housing lip. |
| Note3: Celestron 9.25 inch SCTs
manufactured prior to 2006 have standard 6-32 collimation screws and require
these knobs with standard threads. These telescopes can
be identified by 1) no writing inside the secondary housing (except for the
serial number); and 2) most have silver factory collimation screws (photo). Do not use
metric knobs on these telescopes. |
| Note4: A few non-CPC 9.25
inch scopes manufactured in 2006 have black Phillips factory collimation
screws with standard threads. If your scope's secondary housing looks like
this, it
requires knobs with standard threads. Make sure the knob threads match the
factory screw threads before installing the knobs. |
| Note5: The CPC 925 SCT requires
knobs with metric threads. The CPC 925 secondary
can be identified by 1) a
factory-installed plastic cover over the collimation screws; 2) black
Phillips factory collimation screws; and 3) brand information on the inside
of the housing. Do not use these knobs on the CPC
925. |
