I am considering a TMB 80 f/6 for CCD imaging and would like to correspond with owners in southern Wisconsin or northern Illinois. Alternatively, could anyone...
9834
ltmby2
Jul 1, 2003 4:48 am
... Marc, In message #8055 Thomas states the new monocentric design eyerelief is 0.80 times the focal length. Regards, Clevis Jones...
9833
gaperlow
Jul 1, 2003 2:42 am
... made whether ... you had best say ... Thanks for the tip, Donald, but I do say "OTA" several times. I'm a lawyer, so I guess anyone wanting to sue can...
9832
Tube Tim
limunary
Jul 1, 2003 2:17 am
... From a quick look, the +2 push didn't seem to hurt. I'm having a large print made and the lady that develops my images has it down cold. She is really...
9831
Stephen Pitt
lthuedk
Jul 1, 2003 1:38 am
... Great to hear, Tim. The P400f is terrific film: fine grain, even spectral response, and takes pushing well, although it might warm a bit at +2. I use it...
9830
Tube Tim
limunary
Jun 30, 2003 11:51 pm
... Glad to hear the wind gave you a break. I was using an AP-900 mount and totally forgot about the 'drag' mechanism on that mount. Be that as it may, I was...
9829
Donald Rosenfield
domarturo
Jun 30, 2003 9:04 pm
The Astromart ad implies the mount is included as no mention is made whether it is and it is shown. Does the price include the mount? If not you had best say ...
9828
gaperlow
Jun 30, 2003 6:56 pm
I thought perhaps someone who missed the chance to purchase a TMB 100/800 before they were gone might be interested in the William Optics version I have for...
9827
tmboptical
Jun 30, 2003 6:48 pm
As some of you may have already noticed, my Essays On Optics link has been down for weeks. I thought it would be a good time to update them, and place them on...
9826
Markus Ludes
apmtelescopes
Jun 30, 2003 6:22 pm
absolutly not Markus ... From: glasspusher2001 To: tmboptical@yahoogroups.com Sent: Monday, June 30, 2003 7:42 PM Subject: [tmboptical] Re: 80mm triplet images...
9825
Stephen Pitt
lthuedk
Jun 30, 2003 6:21 pm
... Thanks Jim, from an old fashioned manual guider. Stephen...
9824
tmboptical
Jun 30, 2003 6:16 pm
... Don, Not if it has a good cell design. Alvin Clark's air spaced objectives are still working like the day they were made (assuming the surfaces were kept...
9823
glasspusher2001
Jun 30, 2003 5:43 pm
Wouldn't an air-spaced also suffer from decreasing strehl if it was not recollimated after 5 years of handling? Clear skies Don ... original 99.1 %, after 5...
9822
jimhp29401us
Jun 30, 2003 4:50 pm
I'll have to say as an old fashioned visual observer you guys have me dazzled! Stephen, another great image. All I can say is keep up the superb work and...
9821
Hosea, Mike
mehosea
Jun 30, 2003 3:57 pm
While we're waiting on an authoritative answer, I'll just mention that I think it ended up at 0.8*f. -- Mike...
9820
yooody
Jun 30, 2003 1:10 pm
Hi, I am sure this has been covered, but could anyone post the eyerelief of the TMB monocentrics? Also, possibly the Zeiss Abbe's? Thanks, Marc Zukoff...
9819
Markus Ludes
apmtelescopes
Jun 30, 2003 7:47 am
the found problems, was decreasing of quality , sample: zeiss APQ original 99.1 %, after 5 years retested with 96% strehl Markus ... From: glasspusher2001 To:...
9818
Stephen Pitt
lthuedk
Jun 30, 2003 4:48 am
... Tim...Thank you. I am happy you see the grey scale. Its so easy to let colour dominate and not appreciate the lightness scale. That'd be Sadr alright....
9817
Tube Tim
limunary
Jun 30, 2003 4:23 am
... Nice image with good detail in the 'shadows'. Is that Sadr nearby? I was in the desert myself (near Julian, CA), but the wind was really blowing, was it...
9816
Stephen Pitt
lthuedk
Jun 30, 2003 12:52 am
Hi. From last night at Joshua Tree: http://www.light-to-dark.com/ic1318.html Best regards, Stephen...
9815
Tube Tim
limunary
Jun 29, 2003 11:02 pm
... Good grief Ian, that is a superb image! The 'little' 80 is turning in some outstanding work. What magnitudes skies did you take this from? Tim Povlick ...
9814
Derrick Farley
lhdome
Jun 29, 2003 1:48 pm
... Ian, it looks like a pretty nice image but it is difficult to see the detail at the image scale you have posted - any chance you will post a full-size...
9813
king1964uk
Jun 29, 2003 1:38 pm
Thanks Stephen I have been experiencing problems with parfocalising the G,B filters with the R and Ha. I re-processed the image after running an erosion filter...
9812
Stephen Pitt
lthuedk
Jun 29, 2003 1:15 pm
... Beautiful image, Ian, with well matched focal length-to-target, wide broad contrast scale showing much subtlety, great guiding, and processing. Stephen:...
9811
jimhp29401us
Jun 29, 2003 12:17 pm
Ian, That's a wonderful image. Boy, this TMB 80, is Really something! I'm sure it will soon be illegal though. Something this good cannot last :^). Very very...
9810
king1964uk
Jun 29, 2003 11:39 am
I took the following image last night through my TMB 80mm F7.5 working at F5.6 with a Takahashi 0.75 reducer and a Starlight SXV-H9 CCD camera. Conditions were...
9809
glasspusher2001
Jun 28, 2003 6:42 pm
What problems do you find after a yr with oilspaced lens Markus? Is this caused by misalignment? Clear skies, Don ... interf. when its new and than year later...
9808
jimhp29401us
Jun 28, 2003 2:42 pm
I do not want to take up space on our TMB site talking about other scopes so please e-mail me directly if you have any thoughts. My Observatory at my Farm...
9807
jimhp29401us
Jun 28, 2003 2:33 pm
Whoops, bad spelling.. That's Hurricane Hugo (which was indeed Huge). Jim Phillips ... right ... cooperation-...
9806
jimhp29401us
Jun 28, 2003 2:30 pm
Hi Wayne, I remember seeing the Milky Way from downtown charleston, SC right after Hurricane Huge. Beautiful, but,... Not Worth It. Jim Phillips ... day, and I...
