M54 VARIABLE EXTENSION 15 - 18mm flattener Differently from many other flatteners

Differently from many other flatteners

it is used in order to compensate the focus position shifting caused by changes in temperature

The ASI533MC PRO uses a zero amp glow circuitry which eliminates the problem

CDK14 users can experience pinpoint stars edge-to-edge and a 70 x 70 arcminute field of view when using large 16803 size camera sensors

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M54 VARIABLE EXTENSION 15 - 18mm flattener Differently from many other flattenersThis variable length adapter consists of a male M54 x 0. 75 thread on one end and a female M54 x 0. 75 thread on the other. Optical thickness of the adapter can be adjusted between 15 18mm. This is very useful for connecting accessories such as filter drawers or filter wheels to correctors which require a very specific backfocus distance. Specifications Connection side A Female M54 x 0. 75 Connection side B Male M54 x 0. 75 Optical length 15 18 mm SKU