70 inch Dob sneak peek
Posted 19 October 2013 - 07:49 AM
- jgroub likes this
Posted 19 October 2013 - 08:20 AM
Posted 19 October 2013 - 08:23 AM
Posted 19 October 2013 - 09:10 AM
Posted 19 October 2013 - 10:09 AM
This will be interesting. I talked to him last week and he said at his lowest power, it took 3 fields to traverse M42. We are working on a lower power eyepiece together and he's making a large-diameter focuser to accomodate it. Something like 4". I'm taking him the focuser bearings tonight.
Posted 19 October 2013 - 02:01 PM
News is spreading! Mike's going to have lines forming soon.
"Build it, and they will come."
Posted 19 October 2013 - 03:22 PM
Posted 19 October 2013 - 03:24 PM
Curious what may have been done regarding mirror testing and support aspects, especially with Steve Dodds involved.
Posted 19 October 2013 - 04:01 PM
Posted 19 October 2013 - 04:27 PM
I'd have to put a drive on it, though.
Posted 19 October 2013 - 05:06 PM
4 story to focus, 8 story to coc. 8x15' = 120'
Posted 19 October 2013 - 05:46 PM
- sparkyht likes this
Posted 19 October 2013 - 06:08 PM
Posted 19 October 2013 - 09:03 PM
My backyard preferably.....
Posted 19 October 2013 - 10:41 PM
It's for real, folks. Steve, Mike, Charlie and I spent a couple of hours looking through high, thin cirrus but got some decent views of the core of M-31 as well as one of the best views of M-13 I've ever had, despite a bright, full moon and high haze.
Stars are perfectly round, there is no detectable astigmatism.
Even at nearly a ton total weight, it is still aimable by hand.
Wow, what a sight to behold.
Mike did say that he plans to take the scope on the road and hit as many major star-parties as his work schedule and budget will allow. He still has to pick up a trailer for the scope. It takes a full day to assemble once on-site.
The scope is going to remain operational through the winter at Nova Optical and Mike will operate it as his work schedule and the weather allow.
Steve seems to think that the silvered surfaces may only need to be renewed once a year. The current coating is a few months old and I could see no evidence of darkening (of course a visual inspection doesn't mean that reflectivity hasn't dropped, but it's encouraging).
I took a bunch of photos, including some close-ups of a few details and will post them tomorrow after I upload and process the ones that turned out.
- jgroub likes this
Posted 20 October 2013 - 12:16 AM
Posted 20 October 2013 - 12:20 AM
Posted 20 October 2013 - 06:14 AM
Posted 20 October 2013 - 09:38 AM
That is an amazing project .It shows that dreams can be achieved with hard work.
Posted 20 October 2013 - 11:20 AM