The iOptron field flattener reduces the normal field curvature inherent in all refractors to provide you with images that are sharply focused out to the very corners of your 35mm or large format CCD imager frame. Stars look sharp and point-like all the way across the field.
This 2” iOptron field flattener is designed for iOptron’s Versa 108 ED refractor, but also is compatible with f/5 to f/7 refractors.
- Fully multi-coated two element lens (Ohara S-BLS7)
- Suitable for f/5 to f/7 refractors
- Suitable for 2 inch fitter (Inner thread M48 x 0.75mm)
- T-ring thread for most 35mm cameras
- External anodized gloss finish
- Internal surface matte finish for reduced glare
- Made with high accuracy machining