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COMA CORRECTOR
Coma is a common optical aberration that can plague the outskirts of your image.
When coma is present, stars in the center of the field will pop like precise points of light,
but stars at the edge take on an unnatural comet-like shape. Explore Scientific’s Coma
Corrector can help you minimize or even eliminate image aberrations caused by this off-
axis optical phenomenon even in fast Newtonians. Our 2” coma corrector offers multi-
coated lenses, a black-anodized aluminum barrel with spacer markings and a textured
rubber grip. Tightly secured by three thumbscrews, this accessory comes with two
adapters (.75” and 1”) to secure to your T adapter and a protective cap.
FIELD FLATTENER
A curved focal plane is an inherent feature in most telescope designs and is nothing
to note for general stargazers. But, for astrophotographers, the consequences of that
same curved plane can ruin hours of patient imaging. Designed for refracting telescopes,
Explore Scientific’s Field Flattener can tackle the edge-of-field aberrations caused by
this necessary curvature to ensure your long night at the eyepiece will not be in vain. This
accessory offers fully multi-coated optics and slides securely into the 2” eyepiece holder.
FOCAL REDUCER
Explore Scientific’s 3” Field Flattener/.7x Focal Reducer is a multi-faceted accessory
designed to enhance your astrophotography experiences. As a field flattener, this piece
addresses the edge-of-field aberrations caused by curved focal planes to ensure your
night at the eyepiece will result in crisp, true images. As a focal reducer, this device will
reduce your f-ratio by .7, which results in a wider field of view, brighter images and less
exposure time. Recommended for our 127mm and 152mm refracting telescopes, and
is designed for f/7.5 to f/8.5 ratios and is best centered on a f/8 optical design, this field
flattener/focal reducer boasts fully multi-coated optics and comes with a 2” adapter to
accommodate different focuser sizes and two T-thread adapters.
EYEPIECES
Summary of Contents for TWILIGHT Series
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