Monday, February 23, 2026

The Moon at 5.7 days

 There were some thin clouds in the early-evening western sky, but they didn't prevent getting a shot of the 5.7-d moon.  The telescope used was the Sightron Japan infini D50, a 50-mm aperture, 540-mm focal length achromat.   This scope seems to perform quite well.  There is only a hint of chromatic aberration along the limb of the moon in the digital image.  Visually, a Nagler T6 5-mm eyepiece was used to provide a 108x view of Jupiter.  The cloud bands were very well defined.


 

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