TS-Optics REFRACTOR 1.0x Flattener Gen 2 for APO - Large Format - M92 Connection

The flattener flattens the field of view of refractors for astrophotography and provides perfect imaging even with large sensors.

♦ Connection telescope side: M92x1 male thread

♦ Connection camera side: M78x1 female, M54x0.75 female and M48x0.75 male

♦ Working distance from the M48x0.75 male thread to the sensor is 55 mm for telescopes with a focal length of 900 mm or longer

♦ The M48 adapter offers a screw-in thread for 2" filters (M48x0.75 female thread)

♦ Excellent field correction and illumination up to a diameter of 60 mm (without M48 adapter)

♦ Multi-coating and anti-reflective coating against reflections and halos around stars

♦ The focal length of the refractor is not changed

♦ Suitable for all refractors with large focusers from 2.5" - connection adapters are optionally available

♦ The corrector requires a backfocus of at least 145 mm from the screw-on thread


 

TS-Optics 1.0x Apo Flattener and Field Corrector Gen 2

Teleskop-Service has revised and improved the legendary 3" flattener. The result is an excellent field corrector for astrophotography with large sensors, such as full-frame cameras. The typical field errors of refractors, such as astigmatism and field curvature, are optimally corrected. We do not know of any flattener in this class with comparable results.
 

Distance recommendation for the TSFLAT3 flattener:

The corrector is optimized for refractors from 900 mm focal length. However, it can also be used on refractors with shorter focal length. The working distance must then be extended accordingly.

Working distances from M48x0.75 male thread:

♦ refractors from 900 mm focal length: 55 mm from the M48 thread
♦ Refractors from 800-900 mm focal length: 57 mm from the M48 thread
♦ refractors from 700-800 mm focal length: 59 mm from the M48 thread

The corrector has two additional threads for individual adaptations:

♦ M54x0.75 female thread: the working distance increases by 7.5 mm - ideal for full-frame cameras if you want to avoid the M48x0.75 bottleneck.

♦ M78x1 female thread: The working distance increases by 22.5 mm - space enough to install an off-axis guider.
 

Adapting the TSFLAT3 to your telescope:

The corrector requires at least a 2.5" focuser. An M92x1 male thread is provided on the telescope side. The TSFLAT3 fits directly to the large 3.7" RPA focuser TSFOC37, with which the large Photoline and TSCF Apos are also equipped.

In the accessories section you will find connection adapters to many common focusers. We are also happy to manufacture an individual adapter to your focuser for you. The part number is # Special125.
 

Individual camera adapter from the M78x1 female thread:

The corrector offers a M78x1 female thread on the camera side with the long working distance of 77.5 mm to the sensor. We offer an adapter to the M68x1 male thread. So you can design your individual adaptation and adapt accessories like off-axis guiders, filter wheels ...

 

Design:	Flattener and field corrector for refractors
Coating:	Multi-coating and anti-reflective coating on each glass-air surface
Connection telescope side:	M92x1 male thread - length 6.5 mm
Connection camera side:	M78x1 female thread, M54x0.75 female thread and M48x0.75 male thread
Overall length of adapter to M48x0.75:	83 mm
Working distance from M78x1 thread:	77.5 mm
Working distance from M48x0.75 thread:	55 mm
Diameter of the corrector:	96 mm
Weight:	approx. 400 g

In the box:
♦ TSFlat3 Flattener
♦ M48 Adapter