Similar to: PlaneWave Instruments STX/STL Nose Piece Adapter

Top Picks

Baader Erecting Prism Star Diagonal
Top Pick

Best upright viewing accessory for terrestrial telescope observers.

This is the essential upgrade for turning your telescope into a powerful spotting scope. By correcting the image orientation, it makes terrestrial viewing intuitive rather than disorienting. You sacrifice a bit of light transmission compared to a standard mirror diagonal, but the gain in natural, upright perspective is worth every bit of the trade-off.

Upright Image

2" Compatibility

1.25" Adapter

90-Degree

Starlight Instruments Adapter for RC Rack & Pinion Focuser
Runner-Up

Best essential adapter for Ritchey-Chrétien telescope accessory integration.

This precision-machined component bridges the gap between specific high-end telescope tubes and advanced aftermarket focusers. It ensures a rigid, secure connection that maintains optical alignment for demanding imaging or visual setups.

Telescope Adapter

Focuser Compatible

Stellarvue Reducer Flattener
Best Value

Best optical upgrade for serious astrophotographers using f/7 refractor telescopes.

This optical accessory effectively shortens the focal length of specific refractors, providing a wider field of view for astrophotography. It simultaneously corrects field curvature, ensuring stars remain sharp and pinpoint across the entire frame.

Wider Field

Field Flattener

f/7 Optimized

2" Compatible

Best precision adapter for Takahashi astrophotographers upgrading their focusing system.

Best precision spacer for dedicated astrophotographers seeking absolute mechanical stability.

Best precision optical upgrade for serious Newtonian astrophotography enthusiasts.

Best optical accessory for amateur astronomers seeking wider celestial views.