Astromania 2" field flattener - Provides perfect image flatness for your astronomy photos
Many refractors and reflector telescopes suffer from field curvature. A curved image field means that stars at the edge of the field of view no longer appear as pin-sharp points but as out of focus discs. But now the new Astromania field flattener will conjure astronomy photos with pin-sharp stars right out to the outer edge of the image field.
Bringing the problem under control
Field curvature is a common optical defect that is not noticeable with visual observing or photography using small chips. If, however, you use a large chip or a full-frame camera, then this defect becomes glaringly obvious. Of course you could always crop your images to remove the blurred outer region; but using a field flattener it is much more elegant solution for using your expensive camera with its large format chip.
Flat field over the entire field of view
The field flattener gives you an absolutely flat image over the entire photographic field of view. Also, the focal length remains the same when using the flattener.
Suitable for telescopes from f4 to f8
You can use the Astromania field flattener with any refractor with a focal ratio between f4 and f8.
Product description:
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M48 thread for better aperture illumination: |
Use additional accessories - 109mm of back focus: This field flattener has a very generous 109mm of back focus. |
The advantages in a nutshell: |
Copyright © 2005-2021 Astromania Co., Ltd. All Rights Reserved. POWERED BY UEESHOP
Copyright © 2005-2021 Astromania Co., Ltd. All Rights Reserved. POWERED BY UEESHOP