Search found 127 matches
- Fri Nov 10, 2017 6:39 pm
- Forum: Equipment Discussions
- Topic: Nikon Optiphot stage issue
- Replies: 14
- Views: 1880
How many microns focus difference are there between top edge and bottom through the eyepieces? Use the markings on the fine knob to measure This is a very important question. Even on new microscopes, unless the stage has leveling adjustments, some degree of tilt should be expected. If it's only a c...
- Thu Nov 09, 2017 2:26 am
- Forum: Equipment Discussions
- Topic: Mitutoyo 10x 0.28 - damaged?
- Replies: 25
- Views: 3103
- Tue Oct 17, 2017 8:45 am
- Forum: Equipment Discussions
- Topic: Counterweights for heavy lenses on vertical rails?
- Replies: 23
- Views: 4630
. . . With a counterweight that uses mass (literally, one weight used to oppose another), the moving parts end up weighing twice the mass of the lens, camera and moving stage, and the resulting increase in inertia can be a problem for the motor and other mechanical parts. It helps a little that you...
- Mon Oct 16, 2017 10:52 am
- Forum: Equipment Discussions
- Topic: Counterweights for heavy lenses on vertical rails?
- Replies: 23
- Views: 4630
Re: Counterweights for heavy lenses on vertical rails?
I have some very heavy lenses, some more than 10 kg. This is far above the rated vertical capacities of most motorized rails. One idea I've had is to use a counterweight to balance the weight of the lens, like elevators use. Has anyone tried this? Any advice? I have a Nikon MM40 stand that uses a l...
- Sat Oct 07, 2017 8:00 pm
- Forum: Beginners Macro
- Topic: newport 423
- Replies: 4
- Views: 3632
Maybe an Arca clamp on the tripod head and a compatible plate on the Newport stage. Something like this on the tripod head: http://www.ebay.com/itm/Desmond-DAC-04-Dual-Channel-Arca-Slidefix-Compatible-50mm-Clamp-QR-3-8-w-1-4-/162692594736?hash=item25e13bfc30:g:m0IAAOSwPfZZz~dk and then a rail/plate ...
- Fri Oct 06, 2017 12:15 pm
- Forum: Equipment Discussions
- Topic: rotary stage for 360 degree-photography
- Replies: 8
- Views: 2385
Would there be any advantage over a stage that has a fine-focus knob for a few degrees, compared to this novoflex panorama plate? Only you can answer that question. If you're trying to move in evenly spaced intervals the Newport stage is marked every degree the Novoflex every 10 degrees. If you're ...
- Fri Oct 06, 2017 6:43 am
- Forum: Equipment Discussions
- Topic: rotary stage for 360 degree-photography
- Replies: 8
- Views: 2385
I think this one will do what you want: http://www.ebay.com/itm/KLINGER-MICRO-CONTROLE-NEWPORT-PRECISION-ROTARY-THETA-STAGE-w-MIC-4-3-X4-3-/253173016852?hash=item3af249a914:g:ROQAAOSwmLlX8G3a But I'd advise against a stage with only high precision positioning, unless it's motorized. 180 degrees at 1...
- Fri Aug 25, 2017 12:21 pm
- Forum: Equipment Discussions
- Topic: Mystery knob on goniometer
- Replies: 7
- Views: 1354
The attachment hole is blocked to the same extent (though I think of it as somewhat restricted) no matter what the function of the screw is. Why not "lock" as one of the possible uses?johan wrote:Could it 'lock' it - ie "fasten" it so no movement possible? Seems odd to block the attachment hole underneath
- Fri Aug 25, 2017 12:13 pm
- Forum: Equipment Discussions
- Topic: Mystery knob on goniometer
- Replies: 7
- Views: 1354
Do you have a photo of the other side showing the scale ? Given the 31mm height shown in one of your photos you have either the model 07GOH106 (with #8-32 inch threads) or the 07GOH506 (M4 metric treads). In either case the usable range is specified as +/- 20 degrees. It looks like you've positioned...
- Fri Aug 25, 2017 9:17 am
- Forum: Equipment Discussions
- Topic: Mystery knob on goniometer
- Replies: 7
- Views: 1354
- Wed Aug 09, 2017 9:42 am
- Forum: Equipment Discussions
- Topic: Any Zeiss Photomicroscope experts out there (?)
- Replies: 8
- Views: 2201
- Wed Jul 19, 2017 5:45 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: 300MM F/4E PF + 17E II TC, 1:2 RESOLVING POWER AT 4 FT
- Replies: 2
- Views: 1100
Leon, There's a standardized way of calling out areas of the resolution target that make it unnecessary for you to define areas yourself and enable others, even without your instructions, to know the area you're referring to. The convention is to break the markings into groups of 6 line pairs, aka e...
- Wed Jul 19, 2017 4:34 pm
- Forum: Beginners Macro
- Topic: Questions on beginner software for small stacks.
- Replies: 28
- Views: 9742
. . . The reason I haven't got Helicon is that you really need to buy the Pro version (to get retouching capabilities) and you have to pay again every year :evil:. (That may have changed?). ZS is a one-off payment. Albeit some of the features Helicon has, are rather nice and absent from ZS. It must...
- Sat May 20, 2017 12:49 am
- Forum: Equipment Exchange
- Topic: Nikon PSM 4a to Microphot FXA control cable
- Replies: 7
- Views: 2159
I can't help with an assembled cable but here's a data sheet from HRS/Hirose for the connector series in case you get desperate enough to make your own: http://www.mouser.com/ds/2/185/1600_catalog-938908.pdf
- Tue Apr 04, 2017 1:49 pm
- Forum: Equipment Discussions
- Topic: Setting up my PZO (for those in the know)
- Replies: 123
- Views: 27622