Bahtinov focus mask 140, for 140mm to 170mm diameters

Name: ASToptics Bahtinov focus mask 140, for 140mm to 170mm diameters
Brand: ASToptics
Price: 31.9 USD

$ 31.90 incl. VAT plus shipping costs

in stock
ready for shipping in 24 h + lead time

There is a follow-up model for this product: ASToptics Focusing Mask Bahtinov Acryl 140-180mm

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This product is available in the following variants:
	Diameter (mm)	Price
	109 - 145	$ 25.90
	120 - 152	$ 31.90
	140 - 170	$ 31.90
	175 - 212	$ 31.90
	185 - 210	$ 41.90
	212 - 252	$ 41.90
	240 - 268	$ 52.00
	67 - 87	$ 20.90
	86 - 105	$ 20.90

Product description

Bahtinov focus mask

The focus mask is used to facilitate accurate focusing when doing astrophotography.

How to attach the mask to the telescope: Each mask is supplied with a pair of bolts and fitting plastic covers. Just push the bolts through the holes in the mask and slide the covers onto the bolts from the other side. Now the mask can be simply hinged onto the dewcap or the telescope tube. This adaptation is very universal and fits for widely varying tube diameters.