AST Core 15mm M42 Extension Tube | AST-EXT-M42-15

AST Core 15mm M42 Extension Tube | AST-EXT-M42-15AST Core 15mm M42 Extension Tube This 15mm M42 Extension Tube is designed to provide the perfect balance between ease of use and enhanced optical performance. By adding 15mm 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

ZWO ASI990MM-P

By adding 17mm of extra focal length to your optical path

bringing more accurate control and an amazing reduction ratio of 300:1

Various practical attachments are available on three sides of the tube rings which is really a convenience for practical observation or imaging activities

Astronomy-Dedicated Strain Wave Gear

we use a moon filter

and the outer icon is Octans which is for the users in the Southern hemisphere

While nominally designed for the popular commercial f/4 imaging Newtonians

CGX Equatorial 800 HD Telescopes

The result is an all-in-one solution offering you many of the same features used on PlaneWave's observatory-class telescopes

Focal Length 19mm Barrel Size 1

The built-in Flatfield lens is a great contribution to Askar 107PHQ's imaging ability