Diagram Reports
Parts
A. Camera Angle Rotator Tension Knob
B. Helical Focuser
C. Focuser Tensioner / Lock
D. Dew Shield
E. M48 Rear Dust Cap
F. Mounting Ring
G. Mounting Ring Knob
H. Dual side Dovetail Plate (Vixen & Arca Swiss Type) PRC210
I. Sensor Tilt Adjuster
The [D] Dew Shield on the Redcat is convertable for storage. Which it has to be inverted before use.
Operation Guide
Sensor Tilt Adjustment
- Locate the pair of diagonally opposing screws corresponding to the affected corners.
Where is the tilt adjuster?
1. Remove the rotator knob.
2. Remove the ring cover.
3. The tilt adapter is inside.
- Use the 2mm hex key to loosen the pull-in screw of the screw group closest to side where stars appear too close, and loosen the push-out screws of the group on the opposite side (too far).
- Adjust the push-out screws in the "too close" group and the pull-in screw in the "too far" group until the tilt is corrected.
- Gently snug all screws to hold the final position.
Note
- Make small adjustments at a time—1/8 turn is recommended for fine control.
- Adjust other screws if necessary to maintain overall balance.
- If the tilt becomes worse or is severely misaligned, perform a reset:
1. Loosen all push-out screws
2. Tighten all pull-in screws fully
3. Back out each pull-in screw by the same number of turns
4. Begin tilt adjustment again from this neutral position
Installing a M48 Filter
- Lock the Rotator
- Take off the M48 adapter
- Lock the filter ( male thread ) inside the M48 adapter ( female thread )
- It is recommended to apply some lubricating oil on the threads first to avoid being permanently tightened.
- Put the adapter back
Care & Safety Instructions
Solar Safety Warning
Never point your telescope or finder scope at the Sun without a proper solar filter securely mounted to the front of the telescope.
Even a brief, unfiltered glimpse of the Sun can permanently damage your eyes or your camera’s image sensor.
Use only front-mounted solar filters made by trusted manufacturers. These filters must cover the front of the telescope’s dew shield securely.
Do not use solar eyepiece filters. They are unsafe and can fail under sunlight.
With the correct solar filter in place, you can safely observe and photograph the Sun without damaging your eyes, your camera, or your telescope.
Telescope Care & Storage
To preserve the optical quality and lifespan of your William Optics telescope, please follow these essential care and storage practices:
- Allow time to acclimate After use, let the telescope adjust to room temperature before storage. During this period, keep the optical tube open and uncovered to allow moisture to evaporate naturally.
- Ensure dryness Make sure the entire telescope is completely dry, especially the optics and interior tube, and free of dew or moisture before putting it away.
- Use proper storage conditions Store your telescope in a dry, dust-free environment with a stable temperature. Avoid high heat or humidity. Dehumidifiers or silica gel are recommended for long-term protection.
- Prevent dust accumulation Always place dust caps on both ends when not in use, or cover the telescope with a clean plastic sheet if it’s not stored in a case.
Following these steps will help maintain optimal performance and prevent damage to sensitive components such as lenses, mirrors, and coatings.
For a detailed cleaning and maintenance guide, please refer to the full article: Cleaning and Maintenance of Telescopes
