Search found 127 matches

by genera
Sat Dec 15, 2018 3:55 pm
Forum: Equipment Discussions
Topic: pulley with 60 or 100 teeth and bore 4mm for the THK KR2001
Replies: 12
Views: 6240

Check the index on the 1st page. They're listed in several pitches and widths. Also GT-2 and GT-3 are interchangeable.
by genera
Sat Dec 15, 2018 9:24 am
Forum: Equipment Discussions
Topic: pulley with 60 or 100 teeth and bore 4mm for the THK KR2001
Replies: 12
Views: 6240

Some pulleys here with bores as small as 2mm

http://sdp-si.com/D805/D805_PDFS/sections/belts.pdf
by genera
Wed Dec 12, 2018 1:06 pm
Forum: Equipment Discussions
Topic: Oil in objective, repairable?
Replies: 8
Views: 3200

Under some circumstances some manufactures will do lens repairs. Several years ago I won a Zeiss Plan Apochromat 100x/1.4 on eBay for a very good price. When I got the lens it was covered in oil to the extent that oil was actually dripping from it, the foam pad in the bottom of the vial was saturate...
by genera
Tue Dec 04, 2018 9:11 am
Forum: Equipment Discussions
Topic: unmount polarizer filters
Replies: 8
Views: 1990

If you want adjustable cross polarization, yes.

Have you verified that it is a polarizer and not a neutral density filter? It seems odd, to me, to put a polarizer so close to the lamphouse and in a position with possibly depolarizing optics between it and the subject.
by genera
Mon Dec 03, 2018 3:16 pm
Forum: Equipment Discussions
Topic: unmount polarizer filters
Replies: 8
Views: 1990

Re: unmount polarizer filters

. . . (BTW, the right filter has a kind of horizontal axle: in what kind of application does one need that?) The last filter should fit one of the drop-in filter slots available on many Optiphot vertical illuminators. The pins keep it from falling too far into the slot and the screw provides a conv...
by genera
Wed Nov 21, 2018 8:57 pm
Forum: Equipment Exchange
Topic: WTB: Nikon epi-illuminator
Replies: 14
Views: 5135

It may be that it's missing only the rod that moves the internal DF tube into or out of the optical path. People remove them all the time to use in other equipment. Ask the seller to insert an M4 x 0.7 threaded rod and see if it will engage the threads on the BF/DF slider. The rod, either a long scr...
by genera
Tue Nov 06, 2018 12:17 pm
Forum: Equipment Discussions
Topic: Adjustment/locking Screw
Replies: 11
Views: 2952

Would it be reasonable to file it down from an existing screw? I personally would run an over-long screw through a nut, hold the nut in a vise (so as to not damage the threads), file the end, then cut off to the desired length. A slotted head can be cut with a hacksaw or a dremel. Yes, but I wouldn...
by genera
Tue Nov 06, 2018 5:43 am
Forum: Photography Through the Microscope
Topic: Sporangia, Sori and autofluorescence (2)
Replies: 38
Views: 12377

Wonderful pictures Walter. Walter and Pau, If you're not already doing so, and if the time between exposures is long, you can reduce bleaching by placing a shutter between the lamp and subject, opening it just before and closing it just after the camera shutter opens and closes. Probably a silly que...
by genera
Fri Nov 02, 2018 3:18 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Self-adhesive flocking in long tubes. Aaaaargh!!
Replies: 35
Views: 14367

This method works pretty well for applying adhesive backed flocking inside cylinders. I know it seems like a lot of steps but after the first time it goes very quickly. You'll need protostar, superglue, and a dowel at least a few inches longer than the protostar. 1) Cut your protostar to size plus a...
by genera
Tue Oct 30, 2018 10:25 am
Forum: Equipment Discussions
Topic: Polarizer for Mitutoyo
Replies: 20
Views: 4908

Another advantage is due to the fact that the tube lens may not be designed for cross polarization and putting the analyzer behind it in some cases can degrade the polarization state of the light. There's no reason to retain polarization after the analyzer. In critical applications a waveplate is a...
by genera
Tue Oct 30, 2018 8:32 am
Forum: Equipment Discussions
Topic: Polarizer for Mitutoyo
Replies: 20
Views: 4908

Macro_Cosmos wrote:I have another question, by being as far away from the objective as possible, do you mean:

M (objective)
T (tube lens)
= (extension)
C (camera)
P (Polariser)

1. M === P T===C
2. M ===T ===P C

MC
#1 is common in most microscopes that have provisions for POL
by genera
Sun Oct 28, 2018 2:23 pm
Forum: Beginners Macro
Topic: focus stacking software question
Replies: 3
Views: 5654

by genera
Mon Oct 01, 2018 7:50 pm
Forum: Equipment Discussions
Topic: Novoflex Castel Micro- stepper controlled
Replies: 55
Views: 12782

IMS Schneider makes drivers that have a "gear shift" mode that allows changes between full steps and micro-steps on the fly without loosing position. No need to engineer anything. Check out IMS IM481H if you're not already locked into a specific driver type. Prior Scientific uses these in their cont...
by genera
Mon Oct 01, 2018 2:13 pm
Forum: Equipment Exchange
Topic: Wanted...OLYMPUS OM-MOUNT PHOTOMICRO ADAPTER L
Replies: 11
Views: 2700

The Diagnostic Instruments PA1-10A can be used in place of the Adapter L. It has the same length, once a OM - T adapter is added, and clamps on to the same dovetail as the Adapter L.
by genera
Wed Sep 05, 2018 8:56 am
Forum: Equipment Discussions
Topic: Nikon D850 DSLR to Nikon Eclipse E600 trinocular port
Replies: 26
Views: 5295

. . . . Despite not having experience with this equipment, to me the coupling between both tubes doesn't seem right (red arrow) That coupling is exactly as it should be. The amount of space there doesn't matter once the parfocal distance is set correctly except that moving that tube up or down will...