17.11.2025 Imaging through a window.

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  Monday 17th It was after 12.00 before the sun reached the telescope through the small, double glazed, dormer window. Opening the window produced fierce, thermal agitation of the image.

 
 Here I have added the Lunt 60MT etalon to the 102mm Apo. Not bad for a first attempt. The optics weren't well aligned. The sun had moved too far to the west to allow a clear shot. At least I have a reference for etalon to focus spacing now.

 

 

 

 

 

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