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Astromania 7.5mm T2 Extension Ring
Sometimes you cannot get to the right focal plane for focusing with a camera or eyepiece. This extension tube kit solves this problem. You can use this extender with any camera or eyepiece or with various adapters. The M42x0.75 threads on both ends make it extremely versatile. Use this extender for obtaining the correct image scale or for the exact spacing required for a reducer or field flattener. You can reach the extension length required by combining several extenders of different lengths.
High-Quality Craftsmanship
Fully metal construction and anodizing aluminum process will make the product more resistant to fall. This product must be very durable and will stay with you for a long time.
Thread For Eliminating Light
Effectively reduce stray light interference, not only improve the brightness of the image, but also effectively reduce the dark edges formed, the edge details of the image are clearer.
Lightweight
Lightweight and will not be a load for your telescope. Great quality material, compact enough to keep in your telescope accessory bag. It is easy to carry and will not take up more space.
Snogeez
Reviewed in the United States on January 22, 2022
... and my QHY183
Night Sky Fan
Reviewed in the United States on June 21, 2021
One star deducted because the flange to face distance measures 7.46mm rather than the claimed 7.5mm. A trivial difference for practical purposes. If heaven forefend the .04mm is critical well that's the reason for shims.Otherwise all good.
aford
Reviewed in the United States on December 28, 2019
This is an excellent adapter in a hard to find size. It’s very well made with thick aluminum and has a durable black anodized finish. I have purchased several of these—you won’t be disappointed.
Kirk
Reviewed in the United States on December 24, 2019
This didn't work well for me but may or magu not be the fault of this product. The Male threads are very long and would not fully engage in the camera adapter.
Mike D
Reviewed in the United States on December 24, 2019
Works perfectly to mate the asi 294 or other zwo cameras to the rasa 8.
Ken H.
Reviewed in the United States on November 6, 2019
Only thing I would suggest to make this product better would be to print the length in mm on the outside in a white font.
Chi Chan
Reviewed in the United States on November 10, 2019
There is no specification on the thread lengths. When I used it with RASA 8 M42 adapter, I found that the female thread is just about 0.5mm too short.
R Willis
Reviewed in the United States on April 9, 2017
It fit.
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