Search found 121 matches

by genera
Fri Jul 31, 2020 2:00 pm
Forum: Equipment Discussions
Topic: replacing Nikon FX-35A camera
Replies: 9
Views: 152

Re: replacing Nikon FX-35A camera

Ecooper wrote:
Fri Jul 31, 2020 11:33 am
Thank you. Will I need to replace the existing body with a full-frame digital body?
There's a procedure for adapting the AFX apparatus for use with a Nikon DSLR here: viewtopic.php?f=25&t=15806&hilit=nikon+shutter&start=15
by genera
Fri Jul 24, 2020 1:06 am
Forum: Frequently Asked Questions (FAQs)
Topic: FAQ: 3D models
Replies: 35
Views: 29708

Re: FAQ: 3D models

Item #4 is removed from the thingiverse. One ebay seller from Germany downloaded these files which were under non-commercial license (for personal use only) and started selling in his account https://www.ebay.com/itm/323523667421 ALL my items on this FAQ post are for personal use only ! Saul, are y...
by genera
Sun Apr 19, 2020 12:09 am
Forum: Equipment Discussions
Topic: C-mount dust caps for M25x0.75 nosepiece threads?
Replies: 9
Views: 1634

You can't count on it, though you may find some are OK for home / hobby use. I just tried threading 3 C mount plastic plugs, from 2 different makers, into 3 female M25x0.75 adapters. Of all the combinations; 2 of the plastic plugs would screw into one of the 3 female adapters about 1/2 to 3/4 turn. ...
by genera
Mon Mar 02, 2020 1:28 am
Forum: Equipment Discussions
Topic: Bizarre Nikon Optiphot photo tube attachment ID request
Replies: 12
Views: 774

ChrisR wrote:B would be for a polariser (analyser), surely, but it looks like it may be off something else!
You wouldn't see the polarizing effect in the eyepieces and that, to me, makes it an odd place for a polarizer.

mbb, does anything within the barrel move up and down when the lever is rotated?
by genera
Mon Jan 13, 2020 3:42 pm
Forum: Equipment Discussions
Topic: Variable Extension Tube ID Assistance Needed
Replies: 4
Views: 383

The scallops on the adjustment ring remind me of early tilt/shift adapters and lens made by Hartblei.

You might ask RAF Camera.
by genera
Tue Nov 26, 2019 1:06 pm
Forum: Equipment Discussions
Topic: Optiphot: Can't attach lamphouse to epi illuminator
Replies: 4
Views: 430

Re: Optiphot: Can't attach lamphouse to epi illuminator

. . . Model names I've seen include Optiphot, Optiphot 2, Optiphot 66, Optiphot 100S, 150, 200, 300, Optiphot Biological, and Optiphot Pol. You can eliminate most of these by stage size or shape. For instance the Optiphot 66 has a stage with 6" x 6" of xy travel and the Optiphot 200 has 200 x 200mm...
by genera
Sat Nov 09, 2019 10:04 pm
Forum: Equipment Discussions
Topic: Cooled CCD Recommendations?
Replies: 22
Views: 1691

If I understand the manual correctly the M42x0.75 lens mount is a separate piece, and can be replaced by f.i. a C mount. Perhaps this user replaceable mount system is the reason for the back focus imprecision (listed as either 17-17.5mm or "about 18mm"). In the side view of the flange the only mean...
by genera
Sat Oct 19, 2019 12:18 pm
Forum: General Discussion Forum and Community Announcements
Topic: Copper Nickel Gold balls
Replies: 6
Views: 1947

Re: Copper Nickel Gold balls

The reason for my post is that I found in a box a small vial marked Copper Nickel Gold, with about 1/4" deep of very small metal balls. They are clearly gold, but must be Cu/Ni alloy based on the sticker. Does anyone know what these might be used for? I think they are ~10um in diameter but that's o...
by genera
Thu Aug 15, 2019 6:59 am
Forum: Equipment Discussions
Topic: Puzzling out eBay ad for Olympus laser + halogen microscope
Replies: 2
Views: 1537

Re: Puzzling out eBay ad for Olympus laser + halogen microsc

. . . The equipment shown in the pictures consists of an LG-PS2 laser with a thinner light guide, apparently ending in a connector for an AX/BX series illuminator port, and a FV5-TD halogen illuminator with a thicker double light guide, the ends of which are not visible in any picture. You have the...
by genera
Thu Jun 27, 2019 5:34 pm
Forum: Equipment Discussions
Topic: Modding a Nikon MM-11
Replies: 17
Views: 1776

. . . Sure would like to have a nosepiece turret adapter thing if you have one laying round. I'd like to know what it's called too if you know. -JW: I believe the full model name for your base is MM-11U and the adapter is called an "optical head bracket". I think it's more likely that Nikon was the...
by genera
Tue Dec 25, 2018 7:55 pm
Forum: Equipment Discussions
Topic: 1.8 or 0.9 degree stepper?
Replies: 33
Views: 5686

Here's an interesting note in Design News from Lin Engineering somewhat confirming the more physical cogs (motor step "teeth") the better where accuracy is concerned. I found this while looking for info on driving 5 phase stepper motors, since all my stepper drivers are 2 phase. Surprisingly, the t...
by genera
Mon Dec 24, 2018 10:54 am
Forum: Equipment Discussions
Topic: precision planetary gearbox, NEMA 17 Voltage: 2.7V
Replies: 29
Views: 6932

mawyatt wrote:Gene,

. . .

What is the XY stage from?

Best & Happy Holidays,
It was an eBay purchase. I don't remember what it was a part of or any other details. It was made by Danaher Corp.
by genera
Mon Dec 24, 2018 10:34 am
Forum: Equipment Discussions
Topic: precision planetary gearbox, NEMA 17 Voltage: 2.7V
Replies: 29
Views: 6932

ray_parkhurst wrote:Beautifully crafted, rock solid system.

What do you use to drive the X, Y, Z motors?
Thanks Ray, but not really much craft. I drilled holes in three flat plates, the rest I bought.

The drivers are Parker OEM350 with step and direction inputs and programmable micro-stepping.
by genera
Sun Dec 23, 2018 10:34 pm
Forum: Equipment Discussions
Topic: Leica lens experts - is this a "dipping" lens?
Replies: 14
Views: 2498

ChrisR wrote:The first pic does make it appear there's a depression - which would make an air pocket?
It does look that way. I should have it in a week or so.

Another point against water dipping is that there's no white band.
by genera
Sun Dec 23, 2018 6:57 pm
Forum: Equipment Discussions
Topic: Leica lens experts - is this a "dipping" lens?
Replies: 14
Views: 2498

There is no light guide inside the tube. The tube is completely blocked by the ceramic ? substance. Here's a photo of a water dipping Zeiss objective with similar appearance. http://www.photomacrography.net/forum/userpix/1973_ZEISSWATERDIPPER_1.jpg and here's another view of the Leica objective (I c...