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Filter adaptor

The filter adaptor is screwed on to the back of the SQM (choose model below) and the filter (not included, choose size below) is screwed into the adaptor.

SQM Resources

SQM-L-FA photos
SQM-LU-DL-FA PDF filter adaptor document
Twilight measurements with the SQM

Ordering chart

	Filter diameter
	1.25"	30.5mm
SQM-L
SQM-LE/LU
SQM-LU-DL

Price $25.00 USD plus Shipping & Handling.