Artesky Bahtinov Mask 125-180
When does the delivery take place?
Delivery times vary depending on the country and destination postal code. They will be shown at checkout and apply only to products currently in stock.
For products marked as Not in stock, processing may take between 5 and 15 days. If delays occur, our customer service will contact you with timely updates.
What are the warranty terms?
All our products come with a 24-month legal warranty. Some brands provide extended warranty. Contact us for more info.
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Can I return a product?
You have the right to return a product within 14 days from delivery, as stated in our Refund Policy. Return shipping costs are the responsibility of the customer. Items must be returned in their original condition and packaging. Please contact us before returning.
The Bahtinov mask in astrophotography is very useful as it allows you to understand when the ideal focus for the instrument has been reached.
Bahtinov masks can be used on all instruments without exception, the important thing is to choose it of the right diameter.
The variable measure is to be considered in millimeters for the diameter of the external tube.
How does it work?
Each mask comes with three locking screws, operation is very easy, just place the mask in front of the telescope aperture and point a bright star.
On the computer monitor or on the reflex camera you will see a squashed X with a line in the middle
If the center line at the X is above or below the center, you are in intra or extra focal, so you need to correct the focus.