Search found 2880 matches

by Chris S.
Tue Jan 19, 2010 1:18 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Automatic macro rail
Replies: 82
Views: 24936

Linden, I'll add my two cents. The device seems like a decently automated version of the focusing rails commonly used in the field, but I would want something with finer step increments and the mechanical capability of handling higher magnification optics with ease. I don't care much about field por...
by Chris S.
Tue Jan 19, 2010 10:23 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Questions regarding zerene stacker
Replies: 7
Views: 2284

Stephane, As someone who fixes a lot of computers (and uses Zerene Stacker), my first thought is that your laptop likely has a problem dissipating heat. This happens with many laptops that are two years old or more, or are operated in an environment with dust or pet hair. As Rik says, ZS is quite st...
by Chris S.
Thu Jan 14, 2010 11:57 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Viewing water flow instead of a slide?
Replies: 10
Views: 2537

You might want to do a Web search on the word "microfluidics." I see that it turns up quite bit of good info. Over the past couple of years, several microfluidics researchers have shown me their work, and some of it uses simple, inexpensive techniques that cost pennies per copy, are very adaptable, ...
by Chris S.
Mon Dec 21, 2009 12:43 am
Forum: Equipment Discussions
Topic: Nikon Labophot
Replies: 6
Views: 3356

Rogelio, I have manuals for the Labophot-2 (repair manual, schematic parts, & several instruction manuals). Not sure if these would be helpful, since you are apparently asking about the predecessor model. But if these would be helpful, shoot me a PM with your email address and I'll send them to you....
by Chris S.
Tue Dec 08, 2009 10:59 pm
Forum: Equipment Discussions
Topic: Nikon Focus Block
Replies: 4
Views: 2491

+1 to NU's recommendation. This is an excellent focus block--I have one in my rig (detailed views available here: http://photomacrography.net/forum/viewtopic.php?t=8247&highlight=bratcam (or just search for "Bratcam"). I also pop mine off the high-mag rig for field use on a tripod with regular macro...
by Chris S.
Wed Nov 18, 2009 1:22 am
Forum: Equipment Discussions
Topic: Nikon Objectives on ebay
Replies: 10
Views: 3367

NU, congratulations--you got a heck of a buy on your 20x ELWD. As others have probably noticed, these don't come up so often, and the last one I saw (a couple of weeks ago) went for over $600. One of mine, I paid $500 for. Good show! Betty, I have a 60x ELWD, but haven't worked enough with it to off...
by Chris S.
Wed Nov 18, 2009 1:03 am
Forum: Equipment Discussions
Topic: Nikon SMZ-10 Trinoc opening at $450
Replies: 1
Views: 1583

Very interesting item, g4lab. While not something I want to buy, I'm glad to be aware of its existance. Thanks!

--Chris
by Chris S.
Wed Nov 11, 2009 9:13 am
Forum: Equipment Discussions
Topic: Need help--how to remove Nikon focus block fine focus knob?
Replies: 30
Views: 11462

Thanks, DaveW. And the Internet does seem to be awash in a vast array of toothed belt offerings. . . . No question I'll go with a timing belt approach. Now, my pondering has moved on to the issue of how to mount the motor such that it travels with the focusing block (which can be adjusted about 18 i...
by Chris S.
Wed Nov 11, 2009 9:03 am
Forum: Equipment Discussions
Topic: Need help--how to remove Nikon focus block fine focus knob?
Replies: 30
Views: 11462

Thanks, Andrew, for your voice-of-experience input--just what I'm looking for. A couple of comments: (snip) potentially more backlash (snip) This gives me a chance to bring up an observation: My two focusing blocks have far less backlash than my Newport model 462 linear stage. Backlash has been so f...
by Chris S.
Tue Nov 10, 2009 2:57 pm
Forum: Equipment Discussions
Topic: Need help--how to remove Nikon focus block fine focus knob?
Replies: 30
Views: 11462

Elf, the belt approach sounds like the way to go. Questions, if I may: 1. Suppose I simply put a gear on my fine focus drive shaft, and turn this with a belt. My guess is that the belt would be placing a sideways force on the drive shaft that it was not engineered for, and would probably not stand u...
by Chris S.
Tue Nov 10, 2009 12:55 pm
Forum: Equipment Discussions
Topic: Need help--how to remove Nikon focus block fine focus knob?
Replies: 30
Views: 11462

Barry and DaveW, thanks! Solid, straightforward advice.

Now I have to do some thinking. . .

--Chris
by Chris S.
Tue Nov 10, 2009 12:49 pm
Forum: Equipment Discussions
Topic: Need help--how to remove Nikon focus block fine focus knob?
Replies: 30
Views: 11462

NikonUser is right and I'm wrong. NU, thanks for the correction! My calculations were OK, but maybe it's time to get my eyes checked. (I don't need reading glasses yet--no, really--it's just that they keep making the type smaller.) Here was my approach: A: 100 revolutions of the fine focus dial move...
by Chris S.
Tue Nov 10, 2009 12:32 am
Forum: Equipment Discussions
Topic: Need help--how to remove Nikon focus block fine focus knob?
Replies: 30
Views: 11462

ChrisR, thanks for the link to the vendor selling that particular coupler. While pricey, it may be what I need. NU, could you be thinking about somebody else's focus block? Mine does have divisions of 1 micron, and I'm quite happy with it. The travel is a bit more than 2.5 inches, and it is silky sm...
by Chris S.
Mon Nov 09, 2009 5:32 pm
Forum: Equipment Discussions
Topic: Need help--how to remove Nikon focus block fine focus knob?
Replies: 30
Views: 11462

Barry and Charlie, you were right--a 1.5mm hex key did the trick. It didn't look like a hex-driven set screw when I studied it through that small access hole, but when I inserted the hex key--of necessity blindly--and gave it a fair amount of persuasion, it turned. Having expert advice--not just on ...
by Chris S.
Mon Nov 09, 2009 12:15 am
Forum: Equipment Discussions
Topic: Need help--how to remove Nikon focus block fine focus knob?
Replies: 30
Views: 11462

Need help--how to remove Nikon focus block fine focus knob?

Oh, ye great microscope gurus, please help this neophyte! Here are pictures of the Nikon microscope focus block I'm using for macro stacking. I want to a add a step motor, and if I understand correctly, the best approach is to remove either the right or left fine focus knob, find the drive shaft hid...