圖片僅作供參考，並不代表產品實物及所包括配件。 Pictures shown are for illustration purpose only and may not be an exact representation of the product and accessories included.
Description
General
Thread:
M42 x 0.75
Spacer lengths:
7.5mm (.29"), 12mm (.47"), and 30mm (1.18")
Construction:
Aluminum black anodized
Interior:
Blackened and glare threaded
Exterior:
Knurled grip surface, each ring labeled with its length
Adjusts back-focus between your camera and telescope for the best astroimaging results
Kit includes 3 spacer rings of different lengths (7.5mm, 12mm, 30mm)
Threads to your T-Ring and T-Adapter with standard male and female T-Threads
