Click on the links below for some independent reports on my optics.
20 inch F4
Here is link to a YouTube video in which Alan describes his impressive build…https://www.youtube.com/watch?v=bAltX7bJZUE
More here: https://www.cloudynights.com/topic/796422-building-optimising-a-20-inch-dob/#entry11468051
16 inch F5
https://stargazerslounge.com/topic/378864-16-inch-f5-with-nichol-optics/
12 inch F4
https://www.beltoforion.nl/building-a-telescope/
Wanted to let you know I’ve had some magnificent views with the 12″ f/4 mirror. The telescope is operational. On my trip to south France I observed a lot of the summer sky highlights. I was really impressed by the view of Saturn. I’ve seen details (belts) I’ve never seen before and one night I was able to see not only the Cassini division but the Encke division as well. I didn’t knew this was even possible. I’m really looking forward to hunt the autumn sky for galaxies. – Bart Kapitein
24.4 inch Dobsonian
http://www.cloudynights.com/topic/543503-244-truss-dob-first-second-light-report/http://www.deepskyforum.com/showthread.php?899-24-4-quot-truss-dob-first-amp-second-light-report
18 inch Binoscope
18 inch Dobsonian
http://www.fjastronomy.com/reviews/18-inch-f4-3-david-lukehurst-dobsonian-with-nichol-optics/
20 inch Dobsonian (video)
https://www.youtube.com/watch?v=RahR5GFLnXg
https://stargazerslounge.com/topic/237227-20inch-dobsonian-construction/
22 inch F3.4 Dobsonian
https://stargazerslounge.com/topic/225870-first-light-with-22-f34/
18 inch Dobsonian
https://stargazerslounge.com/topic/239984-first-light-sumerian-18-inch-with-nichols-mirror/
22 inch F3.6
18 inch F4 Dobsonian
https://stargazerslounge.com/topic/254589-nichol-optical-18-f4-18th-wave-mirror/
16 inch Dobsonian (Spain)
http://octurno.blogspot.co.uk/dibujodelcielon
22 inch F3.6 Dobsonian
Nichol Optical 