Astrophotographie

Reduction Factor: 0.8x Optical Design: Reducer and Field Flattener Telescope Connection: 2-inch Barrel Camera Connection: M42x0.75 T-Ring Thread O...

Focal Length Reduction Factor: 0.8x Optical Design: 4-element, 3-group Telescope Interface: 2.4" Slip-fit Barrel Camera Interface: Threaded for Te...

Reduction Factor: 0.8x Effective Focal Length (on TV-102): 704mm Effective Focal Ratio (on TV-102): f/6.9 Compatibility: TV-102 and 800-1000mm f...

Connection Side 1: Male T-Thread (M42x0.75) Connection Side 2: Female Thread for 1.25" Powermate Compatibility: Tele Vue 2.5x and 5x 1.25" Powerma...

Extension Provided: 1mm (0.040") Accessory Standard: Tele Vue 2.4" Imaging System Connection Type: Threaded Material: Black Anodized Aluminum Oute...

Extension Length: 2mm (0.080") Connection Type: Tele Vue 2.4" Proprietary Thread Format: Accessory Tube Material: Black Anodized Aluminum Compatib...

Component Type: Fixed Extension Tube System Format: Tele Vue 2.4" Imaging System Optical Length: 0.25" (6.4mm) Connection Side 1: M61x1 Male Threa...

Extension Length: 9.5mm (0.375") Format: Tele Vue 2.4" Accessory Standard Connection Side 1: 2.4" Female Thread Connection Side 2: 2.4" Male Threa...

Extension Length: 0.50" (12.7mm) Connection Standard: Tele Vue 2.4" Imaging System Thread Material: Black Anodized Aluminum Clear Aperture: >2....

Extension Length: 1.0" (25.4mm) Format: Tele Vue 2.4" Imaging System Connection Side 1: 2.4" Male Thread Connection Side 2: 2.4" Female Thread Mat...

Connection (Telescope Side): Tele Vue 2.4" Female Thread Connection (Filter Side): M48x0.75 Male Thread (Standard 2" Filter Thread) Application: T...

Corrects Coma in Newtonian Reflectors For f/3 to f/6 Parabolic Mirrors 1.15x Magnification Factor Designed for 3-inch Focusers Prevents Vignetting...

Connections: Canon EOS Bayonet (Camera Side) / Tele Vue 2.4" Thread (Telescope Side) Clear Aperture: 25% larger than standard T-rings Application:...

Mechanism: Kinematic, locking flip-mirror Primary Port: Straight-through optical path Secondary Port: 90° reflected path with helical focuser Focu...

Connection to Telescope: 2" Barrel Connection to Camera Side: Tele Vue Imaging System Thread Filter Compatibility: Standard 2" (48mm) Filter Threa...

Corrects Field Curvature for Large Format Sensors Designed for Tele Vue NP101, NP101is, and NP127is Telescopes Fully Illuminates Sensors up to 52m...

Telescope Connection: Tele Vue 2.4" Imaging System Thread Camera Connection: M54x0.75 Male Thread Material: Black Anodized Aluminum Compatibility:...

Connection to Telescope: Tele Vue 2.4" Imaging System Thread Connection to Camera: Nikon F-mount Bayonet Clear Aperture: >42mm (Wider than stan...

Corrects Coma in Fast Newtonian Reflectors For f-ratios as fast as f/3 1.15x Magnification Factor Adjustable "Tunable Top" for Eyepiece Optimizati...

Connects DSLR/Mirrorless Cameras to 2" 2x Powermate Standard Male T-Ring Thread (M42x0.75) Attaches Directly to Powermate Top Lens Cell Low-Profil...

Product Code: PTR-4201 Connection Side 1: 4x Powermate (PMT-4201) Female Thread Connection Side 2: M42x0.75 T-Ring Male Thread Material: Anodized ...

Connection Side 1: Tele Vue 2.4" Imaging System Thread Connection Side 2: SBIG STL-Series Camera Thread Material: Black Anodized Aluminum Optical ...

Extension Provided: 1mm (TLF-0040) Extension Provided: 2mm (TLG-0080) System Compatibility: Tele Vue 2.4" Imaging System Connection Type: 2.4" Thr...

Achieve Precise Back Focus for Tele Vue Imaging Systems Includes Four Threaded Extension Tubes (6.4mm, 9.5mm, 12.7mm, 25.4mm) Includes Two Unthrea...