... Hello Johan, Thanks for the photo that's just what I was looking for.I exhanged emails with Bill at discovery a basically they are JMI Max with the...
Bruce, Yes, it is! A nice OEM! But seriously, the M3 or the NGC Max is a good honest locator tool. They are not the best but they serve their purposes very...
I had a similar problem and used Permatex - Threadlocker - Medium Strength on the bolt and that fixed the problem. There are a variety of products out there....
And what sayz the Opt Website about the primary??? "diffraction-limited 8" f/9 Ostahowski primary mirror" Very nice telescope indeed however, the open...
Hi I got a Discovery 17.5" f/5 PDHQ recently, and that's my first large dob (made a jump after a handmade 8"). Of course, there's a world of new things I'm...
Could it be, it's out of collimation??...Gar ... From: Akarsh Simha To: DDU Sent: Thursday, May 28, 2009 6:36 AM Subject: [DDU] Discovery 17.5" performance Hi ...
At 400X collimation is critical indeed. How are the views at 250? On the Dutch astroforum there is that guy (Nop) who had the same issue. Let me check what he...
... Thanks Johan, Gar. Very much possible that it was out of collimation, considering that I forgot to check the collimation after a long journey that it had...
Sure, any amount of humidity, smoke, clouds, or any other weather related conditions can effect viewing. Also, you mentioned the "Pillers of Creation". They...
After having a 17.5"f/5 Discovery split tube. I can tell you that even if you move it a little you will need to check the collimation. I have a 16" and 12.5"...
That should read, there still a good deal. I also sold my 17.5" and that was a bad move. **************We found the real ‘Hotel California’ and the...
... Yep! Collimation wasn't much of a requirement earlier when I just used to 'find' faint fuzzies with my 8", and not 'observe' the details in them, so I...
... Okay. Thanks. ... I used an OIII filter and me and a friend were able to discern the larger two of the three pillars of creation despite hazy skies (and ...
An other possibility is that you have some Astigmatism on the primary, however, those discovery primaries are sililconned with 3 blobs and unless something is...
Just to inform everybody; I'm not affliated with nor do I have any knowledge of Discovery's business, sales or otherwise. I 'm not under contract to...
Hi Akarsh, On the subject of Newtonian Collimation the best webpage that I found is http://www.catseyecollimation.com/mccluneytext.html till the time you get...
Hello Terry, Thank you very interesting for that feedback. So you are not producing/finishing optics for Discovery? On the Discovery Website under the TAB...
Johan, I originally formed Discovery with Bill in the early 90's. This was after I had worked at Meade for more than ten years. The website material you have...
Hello Terry, If you're still monitoring this thread, This is Bill Leyrer in Duncan, OK. I have been keeping an eye on this conversation and based on the...
Hello Terry, To be fair towards Bill, when I asked him who is doing the optics when inquiring info for a future 22" f4 TD he stated " I will ask Terry to do...
Johan, Thank you. Your reply is what I had hope to hear. If my schedule will permit, I hope I can get the opportunity to do your optics. Terry ... From:...
Lahore Omer offered me a ride in his car to Rohtas. This was a great help. To enable me to easily stay awake all night at Rohtas, I planned to keep awake on...
Lahore Omer offered me a ride in his car to Rohtas. This was a great help. To enable me to easily stay awake all night at Rohtas, I planned to keep awake on...
Next week it will have been two years since I've ordered a 17.5" f/5 telescope From Discovery. My question is this: Is two years a reasonable wait time? Every...
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