Quote:
Originally Posted by Andy01
Rodney, to me the spacing looks like it needs attention.
When one has "warp speed" in the corners, it means the sensor is too close (ie: more spacing is required), the Goldfish bowl look is the opposite.
Your corners are showing the warp speed pattern, and a hint of tilt.
Cheers
Andy
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That is where the 'gotcha' is with this OTA Andy. The Tak FSQ106 EDX range are supposed to have a flat field out of the box with an image circle of 88mm. There is no reducer in the image train so as long as you reach focus at the back focus distance of 178mm then all should be sweet. There is no option to play with the spacing because that is effectively what is being done with the focusing of the telescope. Or - to put it another way - if the image plane of the camera is in focus then the field should be flat.
Admittedly, full fame sensors with small pixels are somewhat demanding but I still thing there may be an issue with the OTA.