Why Purchase from All-Star Telescope?
Free Expert Support
Whether you are a first timer needing help with setting up or an enthusiast that can't quite make that one thing work, our expert staff are ready to support your needs. With decades of knowledge and first hand experience we've been there and we can help you through it!
Stress Free, Secure Transactions
You can trust purchasing and delivery with All-Star Telescope. All of our transactions are 100% secure and Level 1 PCI DSS compliant thanks to Shopify's ShopPay platform. For additional protection, we insure 100% of the value of every shipment we make. If it get's lost during shipment, we replace it. If it gets damaged during shipment, we replace it. We make sure your product arrives exactly as you would expect it to; we promise.
We also ensure privacy protection. We never keep any of your credit card information on file and any of your personal data is stored according to our policies.
30 Day Return Policy
Buy with confidence knowing that we accept returns up to 30 days after purchase. We want you to have something you will actually use and we are confident that we keep good quality products in our store with No Junk.
Price Match Promise
Shipping around for the best price is tough, we make it easier by offering the best pricing in the market. But if you find a better price on an in-store item somewhere else we will match it!
Product Description
AST Core 20mm M42 Extension Tube
This 20mm M42 Extension Tube is designed to provide the perfect balance between ease of use and enhanced optical performance. By adding 20mm of extra focal length to your optical path, it allows for finer focusing adjustments, ensuring sharper, more precise images. You can also easily combine it with other M42 extension tubes or spacer rings to achieve the perfect focus for any setup.
Whether you're an astrophotographer capturing deep-space objects or an amateur astronomer seeking greater clarity, this AST Core Extension Tube delivers reliable results at a budget-friendly price without sacrificing quality. Built with durable, high-quality materials, it integrates seamlessly into your existing telescope setup for a smooth, hassle-free experience.
Specifications
- Extension Material: Metal
- Extension Side 1 Thread: M42*0.75 (Male)
- Extension Side 2 Thread: M42*0.75 (Female)
- Focal Length: 20mm