Sunday, February 15, 2026

Wide Angle Finderscope Complete

I still to need to touch up the paint.  I am waiting for some glossy white touchup paint.  The thumbscrews are longer than they need to be. I have ordered 3/8" and 1/2" long versions to replace them.  The battle to get the helical focuser is complete.  

In case you are unfamiliar with helical focuser, they provide a way to get very precise focus. They have a very limited range, but that is why it is inserted in that extension tube which provides coarse focus.  I am expecting a clear sky tonight for faintness of star checking. 

This has the Svbony 25mm Plossl eyepiece.   It is a beautiful 48 degree appparent field of view eyepiece.  I am expecting an 8 degree field of view.

I needed a dustcap at the front. That thing at the end is threaded to fit on the tube.  I saw that at Home Depot and decided that was better than the usual crummy dustcaps.
We had a rare clear night. Fifth magnitude stars immediately above Orion's belt are clearly visible even with my not night-adapted eyes.  I suspect this probably takes me down to magnitude 6 which was my goal 

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