Celestron 94182 Cheshire 1.25-inch Collimation Eyepiece Instruction Manual

ആമുഖം

The Celestron Cheshire Collimation Eyepiece is an essential tool designed for achieving precise optical alignment (collimation) in Newtonian reflector telescopes and for assisting with Schmidt-Cassegrain telescope alignment. Proper collimation ensures that your telescope's mirrors are perfectly aligned, which is crucial for obtaining sharp, clear images of celestial objects.

This eyepiece features a unique design with a small opening at one end and thin crosshairs at the other, allowing for easy and accurate analysis of your telescope's optical system. It provides a more precise method of collimation compared to simpler tools, helping you optimize your viewഅനുഭവം.

ബോക്സിൽ എന്താണുള്ളത്

• One (1) Celestron Cheshire 1.25-inch Collimation Eyepiece

ഉൽപ്പന്നം കഴിഞ്ഞുview

ചിത്രം 1: മുൻഭാഗം view of the Celestron Cheshire 1.25-inch Collimation Eyepiece, showing the viewing aperture.

ചിത്രം 2: പിൻഭാഗം view of the Celestron Cheshire 1.25-inch Collimation Eyepiece, showing the crosshairs for alignment.

സജ്ജീകരണവും പ്രാരംഭ പരിശോധനയും

1. അൺപാക്ക് ചെയ്യുന്നു: Carefully remove the Celestron Cheshire Collimation Eyepiece from its packaging. Inspect it for any signs of damage.
2. അനുയോജ്യത: Ensure your telescope has a 1.25-inch focuser or diagonal. The Cheshire eyepiece is designed to fit securely into these standard sizes.
3. തയ്യാറാക്കൽ: Before inserting, ensure the focuser is clean and free of dust or debris.
4. ഉൾപ്പെടുത്തൽ: Insert the Cheshire eyepiece into your telescope's 1.25-inch focuser or diagonal. Secure it gently with the focuser's thumbscrew, ensuring it is snug but not overtightened.

Operating Instructions: Collimating Your Telescope

Collimation is the process of aligning the optical components of your telescope to ensure they work together correctly. This is particularly important for Newtonian reflector telescopes. The Celestron Cheshire eyepiece simplifies this process.

General Principles of Collimation

• Collimation is typically performed in a specific order: first the secondary mirror, then the primary mirror.
• It is recommended to perform collimation in a well-lit area, as the Cheshire eyepiece relies on ambient light to illuminate the reflections.
• For Newtonian telescopes, it is highly recommended to place a small, self-adhesive reinforcement ring or "donut" at the center of your primary mirror if it doesn't already have one. This provides a clear target for alignment.

Step-by-Step Collimation for Newtonian Telescopes

1. Insert the Eyepiece: Place the Cheshire eyepiece into the focuser of your Newtonian telescope.
2. നിരീക്ഷിക്കുക View: Look through the small viewing hole of the Cheshire eyepiece. You will see a series of reflections. The goal is to center these reflections.
3. Aligning the Secondary Mirror:
   • Identify the reflection of the primary mirror in the secondary mirror. This reflection should appear centered within the field of view കണ്പീലിയുടെ.
   • Adjust the secondary mirror's tilt and rotation using its adjustment screws (usually three screws on the spider vanes) until the reflection of the primary mirror is centered in the eyepiece's field of view. The crosshairs of the Cheshire eyepiece should appear centered on the reflection of the secondary mirror's center mark (if present) or the center of the primary mirror's reflection.
   • Ensure the entire primary mirror is visible and centered in the secondary mirror's reflection.
4. Aligning the Primary Mirror:
   • Once the secondary mirror is aligned, you will see the reflection of the Cheshire eyepiece's crosshairs and the viewing hole in the center of the primary mirror's reflection.
   • Adjust the primary mirror's collimation screws (usually three screws at the back of the telescope tube) to move the reflection of the Cheshire eyepiece's viewing hole until it is perfectly centered on the primary mirror's center mark (donut).
   • The crosshairs of the Cheshire eyepiece should also appear centered on the primary mirror's center mark.
5. അന്തിമ പരിശോധന: Once both mirrors are adjusted, all reflections should appear concentric and centered within the eyepiece's field of view. The primary mirror's center mark should be precisely aligned with the crosshairs and the viewing hole of the Cheshire eyepiece.

For Schmidt-Cassegrain telescopes, the Cheshire eyepiece can be used to check the alignment of the secondary mirror and corrector plate, though primary mirror collimation is typically done using a star test.

മെയിൻ്റനൻസ്

• വൃത്തിയാക്കൽ: Keep the eyepiece clean and free of dust. Use a soft, lint-free cloth or a specialized optical cleaning brush to gently remove dust. For smudges, use a small amount of optical cleaning fluid on a clean microfiber cloth. Avoid touching the optical surfaces with your fingers.
• സംഭരണം: Store the Cheshire eyepiece in a clean, dry environment, preferably in its original packaging or a protective case, to prevent dust accumulation and accidental damage.
• കൈകാര്യം ചെയ്യൽ: Always handle the eyepiece with care. Avoid dropping it or subjecting it to harsh impacts, as this can affect its precision.

ട്രബിൾഷൂട്ടിംഗ്

• Difficulty Seeing Reflections:
  • Ensure you are in a sufficiently lit environment. The Cheshire eyepiece relies on ambient light to illuminate the telescope's interior.
  • Check that the eyepiece is fully inserted and secured in the focuser.
• Reflections Not Centering:
  • Confirm you are adjusting the correct mirror (secondary first, then primary).
  • Make small, incremental adjustments to the mirror screws. It often takes several small adjustments rather than one large one.
  • If the primary mirror does not have a center mark, it can be difficult to achieve precise alignment. Consider adding a small, self-adhesive reinforcement ring to the center of your primary mirror.
• Eyepiece Feels Loose in Focuser:
  • Tighten the focuser's thumbscrew gently until the eyepiece is secure. Do not overtighten.
  • Ensure your focuser is indeed 1.25-inch.

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വാറൻ്റിയും പിന്തുണയും

For information regarding product warranty, please refer to the documentation included with your purchase or visit the official Celestron website. If you encounter any issues or require technical assistance, please contact Celestron Customer Support directly. Contact details can typically be found on the Celestron webസൈറ്റിലോ നിങ്ങളുടെ ഉൽപ്പന്ന പാക്കേജിംഗിലോ.

Celestron Official Webസൈറ്റ്: www.celestron.com