Lunt CaK Filter B1800 straight through
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I will sell Lunt Cak 1800 straight through which will show you the calcium spectrum in the sun from a wide band of 2.4A, in very good condition.
Used for 1 sunny season. I am attaching photos taken by it. Thank you!
Used for 1 sunny season. I am attaching photos taken by it. Thank you!
Funding Member
