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M 66 and M 65 w/ 9 inch homemade APO

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#1 jimegger

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Posted 25 April 2019 - 12:44 PM

I am still working on getting all the adjustments down on the newly ground and polished objective but results have been good enough for this shot of M 66 and M 65 to demonstrate its potential.

The image is from 4 shots at ISO 1600 of 7.5 minutes duration at f/13. There were a couple of wind gusts briefly that knocked the guide star out of the cross hairs but what the hay - it still came out reasonably well.

This objective is a triplet oiled lens design. Imaging season is almost done here now. Come May 5th at the latest the skies are too bright for any decent images of deep sky stuff to be had at 61.5 degrees north. 

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  • M 66 and 65 gamma#2.jpg

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#2 Astroman007

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Posted 25 April 2019 - 12:48 PM

Quite nice.

 

A 9" home made apo? Interesting. How much did it cost to make?


Edited by Astroman007, 25 April 2019 - 12:48 PM.



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