That would seem worth it, however, how good is the substrate on these HO mirrors I wonder? I have no idea, but just curious whether it really is worth doing...
20247
careysub
May 3, 2012 11:31 pm
My thought - I guess I'll be finding out......
20248
Tim Ulmer
tsulmer1
May 3, 2012 11:33 pm
I have a 14" that I'm happy with. My 16 that was refigured tested excellent, but I haven't installed it yet. I have high expectations though... Tim in...
20249
careysub
May 3, 2012 11:36 pm
I will post an account of what I find, and what happens to this mirror regardless of how it turns out to do my part to avoid sampling bias (perhaps bad mirrors...
20250
Denis
denisbroad56
May 9, 2012 9:34 pm
Hi I'm thinking about getting a 25+ inch dob but one topic that I can't find much info on is the process of installing the heavy mirror into the mirror box. ...
20251
C. Starks
cstarsnc
May 9, 2012 10:00 pm
Hi Denis, You didn't mention the thickness you plan to have, but if it is 2", then a 25" mirror will be heavy (F/5 Pyrex is 73 lbs.). I have a 20" F/5 mirror,...
20252
gsbertrand@...
g7l12e5n14
May 9, 2012 10:08 pm
Hi there When I clean my 25" mirror , yes it is a 2 person job , there is room but mirror should be on a small angle . And I have one rule , it doesn't matter...
20253
starryskyn
May 10, 2012 4:08 am
I have the 25 Obsession. The last time its mirror was lowered into the box, it was fairly easy for two of us, clearance was no problem. You can make a net of...
20254
Tim Ulmer
tsulmer1
May 10, 2012 5:46 am
I don't lower my mirrors into any mirror box. My mirrors are installed in the mirror cell while it is outside of the mirror box. Once installed in the cell,...
20255
Neil
lowentress
May 10, 2012 8:41 am
I totaly agree, My homemade telescopes have a desgn where the bottom of the mirror box with the mirror can be unbolted easily and the rest of the mirror box...
20256
Ross Sackett
rsackett00
May 10, 2012 12:56 pm
I use an improvised "cake stand" to load the mirror. In the plywood back of the mirror box I drill three large equidistant holes (this step isn't necessary...
20257
Steve Truittsm
stephmac20016
May 10, 2012 4:26 pm
Cool. Sent from my iPhone ... [Non-text portions of this message have been removed]...
20258
Robert Houdart
rhoudart
May 10, 2012 7:31 pm
Hello everybody, The 1100 mm telescope project we commenced in 2007 is taking a second start after nearly 4 years of interruption. See the web page for the...
20259
Shane LaPierre
ctastronomer
May 10, 2012 7:35 pm
Robert, I have been waiting to see the result of this for a while... although I am sure not as much as you! Thanks for posting this milestone, and glad you...
20260
parabola30
May 14, 2012 3:59 am
I think that when Robert's telescope is complete, it will be time for a new photo for this group's home page. Mike Lockwood...
20261
john
m51john
May 14, 2012 9:46 pm
Sounds good to me. Best, John...
20262
zoran stojcevski
astrozor
May 15, 2012 12:39 am
Mike, Isn't that almost maximum diameter can be made if you take that the width of Supremax glass block is 1200 mm? Zoran ________________________________ ...
20263
parabola30
May 15, 2012 4:06 am
Zoran, ... Yes, you're correct. If you try to cut out a larger blank, the glass might not be thick enough near the edge to yield a uniformly thick blank. I...
20264
walter kennison
walterkennison
May 16, 2012 6:44 am
<p>Find out How to earn serious money online using a revolutionary system<br><a...
Your mirror may be a little like mine, in that in addition to simple dust and pollen you build up a haze of organic material over time. This technique seems to...
20267
Mike
ctguy1955
May 22, 2012 8:57 pm
Hello Don !! Ive watched this video, and This guy knows what he is doing. I do not wish to take my mirror out of the scope, but I can do the same thing...
20268
pensack1
May 22, 2012 9:21 pm
Most fans have non-rustable bearings, so getting them wet wouldn't be a big issue so long as they were completely dry before applying any electricity to them. ...
20269
Tim Ulmer
tsulmer1
May 23, 2012 12:03 am
You are right Don, Rust is a protential threat. I use stainless steel for all fastening hardware in my scopes and aluminum for any metal components. For...
20270
Jud
mitchell_judson
May 27, 2012 3:19 am
My googling did not help me find where to buy a Glatter sling. Howie, where are you? Jud...
20271
prmo@...
prmo...
May 27, 2012 4:04 am
Call Howie direct. His number is at collimator.com. Sent from my Verizon Wireless 4GLTE Phone ... From: Jud <manisteej@...> To: bigdob@yahoogroups.com ...
20272
Jeff Hineline
lakolhunka
May 27, 2012 3:18 pm
Here is Howie's email address: howieglatter@... From: bigdob@yahoogroups.com [mailto:bigdob@yahoogroups.com] On Behalf Of Jud Sent: Saturday, May...
20273
howieglatter
May 30, 2012 1:04 pm
... I sometimes ask myself that same question. I have those sling things available. You can contact me at howieglatter@... , or 718 796 3203 8AM to...
20274
Roger Greenwood
astrocrumb
Jun 6, 2012 10:11 pm
Hello all whom may be interested, Recently it was brought to my attention that there was a possible issue with the threads on my Astrocrumb FilterSlide...
20276
steve pellarin
pellarins
Jun 16, 2012 3:26 pm
Hi Everyone, Sorry, But it has come to my attention that something or someone has been using my email contact list to send advertising links to my friends and...
