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simple stable dob platform
For my wife's 8 inch dob.
End third of an old 44 gallon drum cut off and top removed inside the rim (rusted out in our case).
To set a convenient viewing height a 50mm deep circular trench dug to receive the cut off end of the 1/3 drum. Place the drum and level the top,pack the drum trench, and fill the drum to about 50mm from the top with small rocks (or whatever you have) then fill with concrete and trowel to leveled drum.
About one inch of concrete shows outside the positioned dob to take whatever markings you choose.
Cheers
Chris
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