Astronomical 1.25 " Projection Camera Adapter Extension Tube Accessory
:
brand new and
Features:
It 1.25 inch mounting sizes on side.
The .M42x0.75mm has an external thread on one end and a standard 1.25" (31.7mm) accessory on the other end.
The inside of the adapter is fully threaded to minimize
The thread accepts a standard 1.25" eyepiece filter.

Main for photography use the camera directly.
Simple Barlow Projection Use your Barlow and camera above.
Eyepiece projection Use the eyepiece in the extension tube.
Extended Barlow Projection Use the extension tube with Barlow (expanding the Barlow projection to make 2 times the Baal to 3 times or more Barlow).

compatible：
for Minolta α-mount camera A99 A77 II A330 A380 A500 A550 A450 A290 A390 A560 A900 A850 A100 A700 A200 A300 A350 A230 A33 A55 A35 A65 A77 A57 A37 A99 A58 etc........
A with a standard 1.25-inch eyepiece port.

Specifications
Product name: Extension Tube
Color: black
Material: aluminum
Size: as the picture shows
Sleeve
Thread size: M42*0.75mm

Note:

Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package Include:(other accessories in the picture is not included.)
1 Mount Adapter
1 T-Ring for
1 Extension Tube