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M90 Tilting Adapter Flange for astrophotography - TSOPTICS


Tilting adapter for telescopes with M90x1 connection thread, for example RC from TS-Optics, Astro Tech or GSO.

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In Short:

  • Connection at telescope side: M90x1 thread (female)
  • Connection at camera side: M90x1 thread (male)
  • Optical path: Minimum 15 mm
  • The tilting adapter allows for exact adjustment of the camera sensors to the field of the telescope.
  • The tilting adapter fits, among others, to Ritchey-Chrétien telescopes with 6" and 8" aperture with the M90x1 connnection thread at the tube back-side.

TS-Optics M90x1 Tilting Adapter

You have your telescope aligned perfectly and enjoy fine stars on the optical axis, but your camera shows distorted stars in one corner. The larger the camera sensor, the stronger becomes the effect. Almost every astrophotographer knows this "bad corner". The most likely causes are:

♦ The field of the telescope is slightly inclined. This can happen due to a simple focuser or due to slightly tilted optics.

♦ The sensor of the camera is not exactly perpendicular to the optical axis. The manufacturers glue the sensors into the body. The accuracy is sufficient for normal applications. But high-resolution optics show this error.

The tilting adapter from TS-Optics is one possible solution:

With three adjustment screws, you tilt the focuser sensitively and thus adjust the camera sensor exactly to the optical field of the telescope. With the locking screws, the position is fixed. The elongated stars in the corner become round again. This time-consuming process needs to be done only once a time. However, we recommend not to change the orientation of the adapter to the camera sensor anymore.

A further possible application for self-construction and improvement of refractors:

Many basic refractor telescopes have good optics, but they don´t supply an adjustment possibility. If you install the GSRCJ90 between objective and tube, you can tilt the objective and thus align it optimally to the tube. You only need an adapter from the objective to M90x1 and the subsequent adaption to the tube.

To adjust the adapter, two hex allen keys (3 + 2 mm) are necessary. These are not included.

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M90 Tilting Adapter Flange for astrophotography - TSOPTICS

Tilting adapter for telescopes with M90x1 connection thread, for example RC from TS-Optics, Astro Tech or GSO.

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