Baader Planetarium 7.5mm / 15mm / 40mm t-2 Extension Tubes (1508155 / 1508154 / 1508153 )
Baader Planetarium 7.5mm / 15mm / 40mm t-2 Extension Tubes (1508155 / 1508154 / 1508153 )
Size
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 repalce 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 accordign 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!
Description
T-2 Extension Tubes enable you to securely set or vary the spacing between T-2 components. The tubes are available in three lengths, 7.5mm, 15mm, and 40mm, and are provided with an internal T-2 thread at one end and an external T-2 thread at the opposite end. Full internal threading and blackening kills any stray light reflections.
T-2 Extension Tubes are used throughout the ASTRO T-2 Systemâ„¢ to provide proper spacing of system components. The Alan Gee Mark II Telecompressor may be configured in various ways that benefit from the ability to vary the spacing of the lens relative to camera or eyepiece. The extension tubes provide a secure way of varying projection ratios (eyepiece to camera separation), for the OPFA System (afocal and ocular projection), and the MPCC makes use of the T-2 Extension tubes to accurately locate and couple the coma corrector to eyepieces. You can use the extension tubes anywhere you need to precisely space and couple any of the T-2 components, in configurations of your own design.
Quick Overview
- Extension tube available in 7.5mm, 15mm and 40mm optical path lengths
- For obtaining correct spacing between camera sensors and e.g. focal reducers
- For eyepiece projection with shift/sliding focuser
- Telescope side T-2 internal thread
- Focus side T-2 external thread
Specifications
| MANUFACTURER | Baader Planetarium |
| SKU (#) | 1508155 (7.5mm) / 1508154 (15mm) / 1508153 (40mm) |
| EAN CODE | |
| WEIGHT (KG) | 0.014 / 0.031 / 0.059 |
| OPTICAL LENGTH (MM) | 7.5mm / 15 / 40mm |
| T-2 Part Number |
25C / 25A / 25B |
| USAGE | for eyepiece projection with sliding focuser |
| INNER DIAMETER / CLEAR APERTURE | 38mm |
| OUTER DIAMETER (MM) | 46mm |
| INNER CONNECTION (LENS SIDED) | Thread, T-2 (M42 x 0,75) |
| INNER CONNECTION (EYEPIECE/-CAMERA-SIDED) | Thread, T-2 (M42 x 0,75) |
| COMPATIBLE BRANDS | Astro T-2, Baader Planetarium |
| TYPE OF ADAPTER | Extension |