Daystar Filters FlatCap Imaging Diffuser
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We offer free U.S. shipping to the lower 48 States - on most orders over $150 USD. Some limitations apply.
Shipping fees will apply on most orders shipping across Canada, with some exceptions.
We offer a 30 Day Return Policy on most of the products that we carry.
For full details on our Shipping & Returns Policy, please click here.
Warranty
The vast majority of products that we sell, with a few exceptions, are covered under Warranty.
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Daystar Filters FlatCap Imaging Diffuser
FlatCap is Temporarily applied over the objective to acquire a "Flat Field" reference image which is then applied to live images taken after the FlatCap is removed.
Spun Aluminum mounting ring with polymer diffuser for taking flat fields.
FlatCap is sold by the inside diameter of the mounting cap.
Measure the outside diameter of the front most component of your telescope or ERF, and then round up to the next larger size.
For example, a telescope with a 160mm front should use model FC170, and then optionally install the included felt pads for a secure fit.
Do NOT order a flatcap based on the aperture of your telescope, you must measure the outside of the front.