With a large Dall-Kirkham like the Takahashi Mewlon 300, you often look at planets, the moon, and double stars at high magnification. You want to focus very precisely without the image shaking. This focus adapter for the Mewlon 300 mounts a Feather Touch focus from Starlight Instruments on the back for that purpose.
The Mewlon 300 has an opening of 300 mm. The adapter fits onto the back of the tube, where the Feather Touch connects. There is also a 2 inch focal adapter for the Mewlon, Compare both with your tube.
Before ordering, check how the back of your Mewlon 300 is designed. Please note that the focus point is moved further outwards with an extra focus lens. What you see at high magnification of a planet, you can read about here. Mars through a telescope.
Choose one of them. Bahtinov mask tailored to your tube.





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