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Just need focus
precise primary alignment
The rings hold any tube with an outer diameter below 150mm — the ring needs at least 10mm over your tube O
The Tri-Bahtinov design was developed by amateur astronomer CY Tan and shared with the astrophotography community on GitHub
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Lumicon 2 Inch #8 Light Yellow Color Filter D Accessory Just need focusLumicon 2 Inch #8 Light Yellow Color Filter Lumicon 2 Inch #8 Light Yellow Color Filter is best suited for viewing contrasting features on the Moon, maria on Mars, orange red belts on Jupiter, and dusky details on Neptune and Uranus. Fits any standard 2" eyepiece.
