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Old 02-11-2019, 07:35 AM
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rcheshire (Rowland)
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rcheshire is offline
Join Date: Apr 2010
Location: Geelong
Posts: 2,627
FS60C flat field

This is for Takahashi FS60C owners - if there are any on this forum?

Not sure of the experience of others with the f/6.2 flattener (not the more recent multi-flattener) and use with consumer digital cameras. But referencing the configuration in the FS60C system chart, I found it impossible to obtain a flat field.

A little bit of forum reading tends to indicate the same.

The previous owner, an IIS member, made up a wider T-Mount front section (it comes in two bits). The difference of several millimeters made all the difference - see attached GIF.

Thanks JG.

Note: the GIF images are of the top right corner of the frames but not the same star field - that would be too organised.
Attached Thumbnails
Click for full-size image (takflat.gif)
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Last edited by rcheshire; 03-11-2019 at 03:09 AM.
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