Thanks for the information. Pricy, but B+W makes the very best in filters. Kent ... more sizes ... [mailto:tmboptical@yahoogroups.com] On ... 20Da ... post ......
29508
stardoctor5
Jan 2, 2006 1:23 am
Dear Eric, I think we met at CSP, hanging out next to ?Jim? and his TMB 175. I will be getting a new AP900GTO in about 3 months, which will be pier mounted in...
29509
sterngucker_7000
sterngucker_...
Jan 2, 2006 4:03 pm
hi folks, what kind of flat field corrector for my 4" f/6 tmb apo would U reccommend? why? look here: ...
29510
sforster12
Jan 2, 2006 5:00 pm
I have the same question for my TMB 175 f-8. Which flattener/focal reducer for an ST-8, and where do I find one? STU...
29511
Terry Tuggle
terry_tuggle
Jan 2, 2006 5:03 pm
Dietmar, TMB sells a dedicated flat field corrector for both scopes. Terry _____ From: tmboptical@yahoogroups.com [mailto:tmboptical@yahoogroups.com] On Behalf...
29512
Terry Tuggle
terry_tuggle
Jan 2, 2006 5:22 pm
STU, At present, TMB does not make a reducer. There was once plans for getting some reducers made by Markus, which has not happened. I have the WO APO .8x...
29513
dietmar hager
sterngucker_...
Jan 2, 2006 5:40 pm
Terry, thanks for information. I used a williams optic 0,8 reducer on the 5" tmb of a friend of mine. see yourself: I cannot reccommend this item! ...
29514
sforster12
Jan 2, 2006 6:21 pm
Dietmar's image shows aberrations at the edges. Do you have any experience with the reducer at longer focal lengths. I've gotten feedback that different focal...
29515
Tube Tim
limunary
Jan 2, 2006 10:11 pm
... The FF design for the TMB 175mm f/8 field flattener design to Markus back in May, 2005, see msg # 25164. Perhaps Markus has an update. ___ Tim...
29516
jimhp29401us
Jan 2, 2006 10:22 pm
Yes indeed! Thanks very much! Ordered. Jim Phillips ... really ... Photo, ... is ... <thefamily90@h...> ... for ... know ... Field ... field ... acquired ... ...
29517
jimhp29401us
Jan 2, 2006 10:26 pm
On Optec's website there is a comparison between the Canon 20D and 20Da for daylight imaging. Basically if look VERY carefully you can see minimal difference....
29518
Tube Tim
limunary
Jan 2, 2006 10:48 pm
... This is not exactly correct. For an optimal design of an FF or FR one should design on a per objective basis. See posts #19611 and #19619 and #18231 in...
29519
sforster12
Jan 2, 2006 10:52 pm
Tim, I'm looking for a reducer too. The final ratio of F 7.66 isn't enough reduction. STU ... one?...
29520
jimhp29401us
Jan 2, 2006 10:53 pm
Hi Terry, My Canon lens uses a 77mm filter. Jim Phillips ... more sizes ... [mailto:tmboptical@yahoogroups.com] On ... 20Da ... post ... for ... TMB ... a ... ...
29521
Terry Tuggle
terry_tuggle
Jan 3, 2006 12:27 am
Dietmar, The TMB 130's are F6, the data with the reducer said F7 to F10 scopes. What backspace did you use for this image? I was not able to find a direct ...
29522
Terry Tuggle
terry_tuggle
Jan 3, 2006 12:36 am
STU, That is right, Michael has used the .75 reducer with his 180, he is not on the list anymore but you could contact him directly. I am sorry I can't more...
29523
Terry Tuggle
terry_tuggle
Jan 3, 2006 12:58 am
Jim, They have all sizes at Adorama. I was mentioning these sizes because of his reference for the TMB 80. Terry _____ From: tmboptical@yahoogroups.com...
29524
Mark
msholdenct
Jan 3, 2006 1:02 am
... Hi Ruben I've used a Nikon D70 on Jim's 175/AP900 setup, and it worked fine for exposures of up to about 3 minutes without guiding. I'm sure we could go...
29525
Tube Tim
limunary
Jan 3, 2006 3:44 am
... I went to the Canon website: http://www.canon.co.jp/Imaging/eos20da/index.html and pulled down their day time images. With PhotoShop, an auto color ...
29526
erdmanpe
Jan 3, 2006 4:04 am
I'm not certain what you mean by "close-focus", but you mention trying to achieve the proper spacing between the TV-FR and the CCD detector. The distances...
29527
tmboptical
Jan 3, 2006 7:19 am
Hello All, As you may know, I have been on a "working" vacation (I will open on Wednesday the 4th), to get out the last six TMB apos telescopes out to my...
29528
dietmar hager
sterngucker_...
Jan 3, 2006 2:32 pm
Terry, thank U! I use a starlight express h9c - for which is no ffc necessary. but for my starlight express sxvm25c it is essential, cos chipo size is giantic!...
29529
dennis
temper999
Jan 4, 2006 12:36 am
Tom: How does it compare with the PentaxXL 40mm? ... From: tmboptical To: tmboptical@yahoogroups.com Sent: Tuesday, January 03, 2006 2:17 AM Subject:...
29530
Michael Howell
a1parkranger
Jan 4, 2006 2:58 am
Peter, I define "close focus" as the focus drawtube cranked in all the way against the focus housing. Can't get any closer to the objective. The NP101 with...
29531
Tube Tim
limunary
Jan 4, 2006 3:00 am
... Happy New Year Tom, (and all) Sorry to hear about your continued neck problem, man this is to bad. The new 40mm sounds like a real winner, congratulations....
29532
Wayne G
missyy9
Jan 4, 2006 5:27 am
Dear Jakes, As a long time member of this group, and long time owner of TMB products, let me chime in here to say a few things: Message: 9 Date: Sat, 31 Dec...
29533
erdmanpe
Jan 4, 2006 6:11 am
I've never tried the FR on the 101, so I can't say that I've seen it come to focus. If you have already tried longer spacers, then that wouldn't seem to be...
29534
Olaf
staberinde2003
Jan 4, 2006 2:29 pm
Greetings! I am using a TMB 1.8x Barlow with my OMC-140 (f/14.3) for planetary imaging. But the 1.8x factor is not enough, so i used to extend the barlow to a...
29535
jimhp29401us
Jan 4, 2006 4:10 pm
Hello Everyone, By gosh I looked outside last night and the sky had cleared off. I checked the Clear Sky Clock and it predicted "average" seeing for most of...
29536
tmboptical
Jan 4, 2006 4:28 pm
... Hi Tim, Yeah, it is a real bummer. But I feel a lot better today. Thanks for the congratulations on the new eyepiece line. Through your TMB 9" f/9, I think...
