SkyWatcher Field Flattener for EvoGuide 50ED (S20214)
$109.99
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SkyWatcher Field Flattener for EvoGuide 50ED (S20214)
$109.99
Field Curvature Correction
Eliminate edge star distortion completely
APS-C Coverage
Full 28mm clean imaging circle
Standard Back-Focus
Precise 17.5mm positioning for cameras
Sharpen Your Deep-Sky ImagesEssential optical correction for refractor astrophotography
Transform your refractor into a high-performance astrograph with the Sky-Watcher Field Flattener for EvoGuide 50ED/DX APO Refractors. Designed specifically to eliminate field curvature, this essential optical accessory ensures pinpoint star clarity from the center to the outer edges of your astrophotography frame.
Precision Optical CorrectionMaximize sensor output and image sharpness
Astrophotographers using the Sky-Watcher Field Flattener for EvoGuide 50ED/DX APO Refractors can capture crisp deep-sky images without off-axis distortion. Delivering a robust 28 mm imaging circle and an expansive 5.33 x 3.57-degree field of view, this field flattener is optimized for APS-C sensor camera setups. It features a precise 17.5 mm back-focus for easy integration into standard imaging trains, along with durable thread-on metal caps to keep optical surfaces protected.
Technical SpecsComplete optical and mounting dimensions
Model Number
S20214
Optical Type
Field Flattener
Imaging Circle
28 mm
Back-Focus
17.5 mm
Field of View
5.33 x 3.57 degrees (APS-C) (maximize)
Camera Connection
T-thread or 1.25" Opening
Protective Hardware
Thread-on Metal Caps
Warranty
Sky-Watcher 2 Year Limited
Core FeaturesKey advantages for dedicated astrophotographers
Curvature CorrectionCorrects optical field curvature across the entire image frame
Sensor Support28 mm imaging circle fully supports APS-C sensors
Standardized Back-Focus17.5 mm back-focus distance simplifies camera attachment
Flexible MountingFeatures dual T-thread and 1.25" nosepiece connections
Rugged ConstructionIncludes durable thread-on metal protective caps
Frequently Asked QuestionsEverything you need to know
What is the main benefit of the Sky-Watcher Field Flattener for EvoGuide 50ED/DX APO Refractors?
The Sky-Watcher Field Flattener for EvoGuide 50ED/DX APO Refractors corrects optical field curvature, ensuring stars remain sharp pinpoint points of light across the entire image frame rather than distorting near the edges.
What back-focus distance does the Sky-Watcher Field Flattener for EvoGuide 50ED/DX APO Refractors require?
The Sky-Watcher Field Flattener for EvoGuide 50ED/DX APO Refractors features a standard 17.5 mm back-focus distance, making it straightforward to connect dedicated astronomy cameras or DSLRs.
Is the Sky-Watcher Field Flattener for EvoGuide 50ED/DX APO Refractors compatible with APS-C sensors?
Yes, the Sky-Watcher Field Flattener for EvoGuide 50ED/DX APO Refractors provides a 28 mm imaging circle, offering complete coverage for APS-C sized camera sensors with a 5.33 x 3.57-degree field of view.