A ALSTAR 12.5mm Plossl Telescope Eyepiece with Illuminated Reticle for Astrophotography - Model 51633

Frequently Asked Questions

• Q: What is the focal length of the Alstar telescope eyepiece? A: The focal length is twelve point five millimeters. This is ideal for providing high magnification suitable for astrophotography.
• Q: What type of reticle does this eyepiece use? A: It uses a dual crosshair reticle. This design allows for precise tracking of guide stars without obscuring them.
• Q: What is the field of view of the Alstar eyepiece? A: The apparent field of view is forty degrees. This wide field provides bright, high-contrast views for easier observation.
• Q: What are the dimensions of the Alstar eyepiece? A: The eyepiece measures two point five inches in length, one point nine inches in width, and two inches in height. These compact dimensions make it easy to handle.
• Q: Does the Alstar eyepiece have adjustable illumination? A: Yes, it features steplessly adjustable illumination. The red LED light can be easily controlled with a knob on the side.
• Q: How do I use the Alstar telescope eyepiece? A: Simply insert it into your telescope's focuser. Adjust the dioptre to bring both the star and crosshairs into focus simultaneously.
• Q: Is this eyepiece suitable for beginners? A: Yes, it is suitable for beginners and experienced astronomers. The clear view and easy adjustments make it user-friendly.
• Q: Can I use this eyepiece for guiding astrophotos? A: Yes, it is specifically designed for guiding astrophotos. The illuminated crosshairs help you track guide stars accurately.
• Q: What other uses does this eyepiece have? A: It can be used for aligning mounts and finding position angles of double stars. Its versatility makes it a valuable tool for astronomers.
• Q: How do I care for my Alstar telescope eyepiece? A: Keep it clean by using a soft microfiber cloth. Avoid using harsh chemicals that may damage the lenses or coatings.
• Q: What type of battery does the eyepiece require? A: It requires three button cell LR1130 batteries. These are not included with the purchase.
• Q: Is the eyepiece safe to use in various conditions? A: Yes, it is safe for use in typical outdoor conditions. However, avoid exposing it to extreme moisture or direct sunlight for prolonged periods.
• Q: What should I do if my eyepiece arrives damaged? A: Contact customer support immediately for assistance. They will guide you through the return or replacement process.
• Q: Does this product come with a warranty? A: Yes, it typically comes with a manufacturer's warranty. Check the packaging for specific details regarding coverage and duration.
• Q: Can this eyepiece be used with any telescope? A: It is compatible with telescopes that have a one point two five inch focuser. Ensure your telescope matches this specification for optimal performance.