This idea has merit in an observatory, where the air in the observatory could be refrigerated to the nighttime temperature. But the mirror in a portable scope...
Don (and others), Agreed... and thus part of the lack of interest in my part in getting this project finished. I would like to finish it for my own use on my ...
Assuming you can over come the issue Don raises, you'll also be in trouble if the air temp at your location is different then expected when the box is opened...
... Not zero, but low enough to keep the mirror above the dewpoint. ... dewpoint ... Yeah, the practical problems are considerable. You'd need to monitor...
... wrote: I have a 15" Obsession, a 25" Round Table platform, and a tall perch made by Roy Hess in Canada. My perch is very similar to the Cat's Perch so I...
Mike, Thanks for the referral to Brian Greer's material Raphael, That's exactly what I was looking for!. Your suggestions for tuning for laminar flow are...
I have enjoyed the discussion of mirror temperature cooling. Allow me to offer a preliminary report on an alternative "Elegant Control System" of large mirror...
Any chance of photo's...without them, it is very difficult to visualize the set-up. (you mentioned NO drawings) Interesting. Please update us later....
You say that without the platform you can view at the zenith standing on the ground, and I'm guessing that at zenith climbing the onto the perch is still at ...
Michael: Your idea seems very intelligent! May I ask several questions to be sure I understand correcty: 1) You don't put water on the upper neoprene...
Raphaël GUINAMARD
rguinamard@...
Feb 3, 2007 9:31 am
16480
I don't understand the fan position either. Somewhere the air has to make a right-angle turn to come out of the mirror box and blow across the mirror face, so...
I have not yet installed the laterals fans to get rid of the thermal layer of the mirror. But anyway, I'm not worried about sucking up dust because on my 24",...
Raphaël GUINAMARD
rguinamard@...
Feb 3, 2007 11:19 am
16482
... layer of the mirror. ... How about getting a HEPA filter, like the ones used in your home heating system, and use it to filter the fan's air. You can also...
This post relates to the awkwardness that I have ... Where I go and set up the ground is level, ... you commented that your site is level. I assume you go to...
Neal writes: "Any chance of photo's...without them, it is very difficult to visualize the set-up. (you mentioned NO drawings) Interesting. Please update us ...
... Yes it may scrub it better, but unless it mixes instantly you will have a turbulent mix of hot and cold air in front of the mirror. That's virtually the ...
... these ... I apologize for the long response time, I just got a replacement computer with Vista and it does not like the internet. Quite a few of you...
Hi all, Very soon after our previous announcement, we received a number of kind warnings that urged us to double-check the real capabilities of the supplier we...
Just stopping by to Hay, to my fellow observers. I am still waiting for receipt of My 25" obsession. HEHE! can hardly wait. Best Regards to all. starlar8...
Robbert, I'm sorry to hear about your all too common experience, but I'm glad you got out while the money was still in your pocket. Good luck in your quest, ...
Warning "Stabilite is out of business" even though their website is still up. ... http://www.embeddedrf.com/Lookinglass_Webpage_Files/Webbed_Backed/Webb ...
Yup. A lot of people lost money when they (Stabilite)filed for bankruptcy. Hextek won't talk to you unless you are NASA. I tried several times to get a quote...
Hi Scott: The largest, affordable mirror out there is the Steve Kennedy 32" at $12,200. I think OMI is making the Obsession 36"ers, but they probably are...
Robert, Sorry to hear about your situation with the primary. Not unexpected though. Have you considered Yuri at Telescope Engineering. Mike ... kind ... indeed...
I found James' email to be very informative. But I don't think he's saying they can't work with them in this size range, but they care not too because of the...
Ric: They can definitely be worked. I just prefer not to work with them. We've had some successes as well as marginal results with fused cellular mirrors in...
... sixteen ... I'm sorry. You are doing the 30" mirrors for them. Obsession did a couple of 36" scopes a number of years ago. I think it was Vaughn Parsons...
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