ubique
29-08-2023, 02:00 PM
Explore Scientific 3" Field Flattener .7x Focal Reducer - FFFR507X-00
These reducer flatteners were made for the Explore Scientific FCD100 Series 127mm f/7.5 refractors but work extremely well with Schmidt Cassegrain scopes. I had one fitted to my LX600 16” f8 Meade and the stars were perfect to the edge. This is one of the few reducers that work well with Meade SCT’s
These are $879AUD at Amazon or $479 USD at most places in the USA
Only selling due to ill health.
Manufacturere Description
Explore Scientific’s 3-inch Field Flattener/0.7x 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 0.7, which results in a wider field of view, brighter images and less exposure time. Recommended for our 127mm and 152mm refracting telescopes (excluding our doublet refractors), this field flattener/focal reducer boasts fully multi-coated optics.
This item comes with a threaded adapter that threads onto the Explore Scientific 2-inch rack-and-pinion focuser. Threaded attachment to a 2.5-hex focuser, which comes stock on our 127mm APO telescopes, requires purchase of an additional adapter.
The field flattener/focal reducer offers 55 mm of back focus from the rear face of the device. The M42x0.75 adapter adds 3 mm, so the sensor needs to be 52 mm from the face of the adapter.
To connect to the 2.5 hex focuser, purchase item number 510366.
While technically this was designed for the f/8 system, through user experiences and our subsequent testing we have concluded that our 3-inch field flattener/reducer performs very well with our f/7.5 refractors.
Price $400 Posted
PM me if you are interested
These reducer flatteners were made for the Explore Scientific FCD100 Series 127mm f/7.5 refractors but work extremely well with Schmidt Cassegrain scopes. I had one fitted to my LX600 16” f8 Meade and the stars were perfect to the edge. This is one of the few reducers that work well with Meade SCT’s
These are $879AUD at Amazon or $479 USD at most places in the USA
Only selling due to ill health.
Manufacturere Description
Explore Scientific’s 3-inch Field Flattener/0.7x 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 0.7, which results in a wider field of view, brighter images and less exposure time. Recommended for our 127mm and 152mm refracting telescopes (excluding our doublet refractors), this field flattener/focal reducer boasts fully multi-coated optics.
This item comes with a threaded adapter that threads onto the Explore Scientific 2-inch rack-and-pinion focuser. Threaded attachment to a 2.5-hex focuser, which comes stock on our 127mm APO telescopes, requires purchase of an additional adapter.
The field flattener/focal reducer offers 55 mm of back focus from the rear face of the device. The M42x0.75 adapter adds 3 mm, so the sensor needs to be 52 mm from the face of the adapter.
To connect to the 2.5 hex focuser, purchase item number 510366.
While technically this was designed for the f/8 system, through user experiences and our subsequent testing we have concluded that our 3-inch field flattener/reducer performs very well with our f/7.5 refractors.
Price $400 Posted
PM me if you are interested