Search found 2488 matches

by mawyatt
Thu May 21, 2020 5:11 am
Forum: Equipment Discussions
Topic: Amazing Wafer Stepper Setup
Replies: 20
Views: 1556

Amazing work, and really like the intended end results for producing meta-materials. Very clever for DIY home-brew photolithography!! He's using a smaller range than the 12 bit DAC can deliver, probably 9~10 bits for driving the Piezo Stage. However doesn't need much range since this is used for pos...
by mawyatt
Thu May 21, 2020 4:53 am
Forum: General Discussion Forum and Community Announcements
Topic: Trying Times
Replies: 4
Views: 1217

My brother sent this, I just redid with our rations :D

Best,
by mawyatt
Wed May 20, 2020 5:46 pm
Forum: General Discussion Forum and Community Announcements
Topic: Trying Times
Replies: 4
Views: 1217

Trying Times

During these trying times many are driven to drink or smoke :D

Stay save and sound.

Best,

Image
by mawyatt
Tue May 19, 2020 5:05 pm
Forum: Equipment Discussions
Topic: Amazing Wafer Stepper Setup
Replies: 20
Views: 1556

Amazing Wafer Stepper Setup

JW sent this to me, thought some folks might be interested. Note the use of the Piezo Stage :D First is video 1, be sure and watch 2 & 3. https://www.youtube.com/watch?v=_w0Z2Y5vaAQ https://www.youtube.com/watch?v=MdRwiI6VLmk https://www.youtube.com/watch?v=ebv_9cmLNqo More on the Zeiss S-Planar Len...
by mawyatt
Tue May 19, 2020 4:18 pm
Forum: Equipment Discussions
Topic: flash for deep stack
Replies: 26
Views: 1758

Hello Mike, I have been using the YN660 for some years for all my stacks. The only one problem is the cover of the battery :-) Everything else has worked in the perfect way up to now. BTW, I use the flashes 430EXII too but in the ETTL mode (not for macro). BR, ADi Hi, You must have some good really...
by mawyatt
Tue May 19, 2020 2:55 pm
Forum: Equipment Discussions
Topic: flash for deep stack
Replies: 26
Views: 1758

I am also quite happy with Godox flashes but not with RF triggers (RF is working fine I think but I do not like the trigger unit). I like and often use optical triggering. Fuji has a great little flash that works without batteries, I wish Sony also has something similar so I do not need to use any ...
by mawyatt
Tue May 19, 2020 1:36 pm
Forum: Equipment Discussions
Topic: flash for deep stack
Replies: 26
Views: 1758

Hi Mike, But what about the price :-( You can get YN660 for $70 :-) https://www.ebay.com/itm/YongNuo-YN660-2-4G-Flash-Wireless-Transceiver-Integrated-for-Canon-Nikon-Olympus/262605707354?hash=item3d2485185a:g:urkAAOSwfl9XAztG BR, ADi Maybe you get what's it's worth :shock: Generally when I was usi...
by mawyatt
Tue May 19, 2020 9:15 am
Forum: Equipment Discussions
Topic: A peek inside the THK KR20
Replies: 6
Views: 773

Re: A peek inside the THK KR20

The THK KR20 linear actuator is not news to many of us. However, it may be interesting to peek inside and see a little of how it is built, especially since disassembling your KR20 just to see what is inside is "not recommended" (for good reasons). http://savazzi.net/photography/THK_KR20_inear_actua...
by mawyatt
Tue May 19, 2020 9:13 am
Forum: Equipment Discussions
Topic: A peek inside the THK KR20
Replies: 6
Views: 773

Nice article, I wouldn't think of disassembling these rails, like taking a complex lens apart, way outside my skill level! These THK KR types are likely some of the best performing rails based upon a screw thread and carriage design, and your article shows why. Control these with a Trinamic controll...
by mawyatt
Mon May 18, 2020 10:39 am
Forum: Equipment Discussions
Topic: flash for deep stack
Replies: 26
Views: 1758

Hello Mike, Flash can help with vibration issues yes, at 1/128 of the power you get very short light-impulse (about 1/40000s) so that no vibration can be registered during the exposure. BR, ADi Hi Adalbert, I think if you measure the optical burst output you will find that's it's not a simple recta...
by mawyatt
Mon May 18, 2020 5:38 am
Forum: Equipment Discussions
Topic: flash for deep stack
Replies: 26
Views: 1758

Thanks Mike, very helpful info. I think I will also consider sth. like AD400-600. Since you mentioned continuous light, I actually consider flash mainly because of additional effect of eliminating any vibration. I dont know how to quantify this, just for eliminating any potential vibration in a sim...
by mawyatt
Sun May 17, 2020 4:19 pm
Forum: Equipment Discussions
Topic: flash for deep stack
Replies: 26
Views: 1758

I did a test today and also I realized this is mentioned in the manual as over-temperature protection which increases the recycling time. So it is activated after 300 consecutive flashes at 1/16 power, (and 500 at 1/32, and 1000 at 1/64-128-256). The manual says to wait 10 mins to recover from this...
by mawyatt
Fri May 15, 2020 5:24 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: In-camera stacking with D850 - looking for tips
Replies: 5
Views: 1317

Don't think you can use the internal stacking with the D850 & an objective, the D850 requires the lens focus control I believe to change focus position

Best
by mawyatt
Wed May 13, 2020 12:27 pm
Forum: Equipment Discussions
Topic: Focus stacking controller
Replies: 5
Views: 959

Search here there are numerous folks that have developed custom controllers using the Arduino and Raspberry Pi, some using the Trinamic devices.

Best,
by mawyatt
Wed May 13, 2020 12:17 pm
Forum: General Discussion Forum and Community Announcements
Topic: Visible emission from transistor PN junction
Replies: 2
Views: 868

Yes, been discussing things with him the past few weeks. He's doing some interesting things and I pointed him here for more info regarding macro techniques and equipment.

Best,