Search found 178 matches

by Peter M. Macdonald
Sun Jul 12, 2020 3:59 am
Forum: Equipment Discussions
Topic: Godox 150W Video LED Light
Replies: 8
Views: 2301

Re: Godox 150W Video LED Light

I looked at the video which was linked in Mike's most recent post. Youtube took me down the rabbit hole to a more recent video by the same equipment reviewer. It seems that Godox have a new 150W LED video light, the UL150. This is silent. The video claims that it is cooled entirely passively. This w...
by Peter M. Macdonald
Tue Jun 09, 2020 12:25 pm
Forum: Equipment Discussions
Topic: Compact motorized vertical stage?
Replies: 5
Views: 452

Not a Z stage, but what about attaching a WeMacro Micro Mate to the focus mechanism of the stereo?
by Peter M. Macdonald
Wed May 13, 2020 3:25 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Problems with rendering details
Replies: 14
Views: 1399

Looking at some areas of your pictures, the lighting is still a little on the harsh side. I appreciate that this may be a symptom of your problem, rather than a cause, but it may be worth exploring. Try to diffuse the lighting even more than has already been done. You can always put a little more co...
by Peter M. Macdonald
Thu Mar 26, 2020 6:00 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Zerene Stacker now has dust & hot-pixel removal
Replies: 52
Views: 8359

Yet another great addition to the tools which you have already put at our disposal. Well done and thank you Rik. I am aware that Canon has a dust delete feature in many of its cameras. You take an out of focus image, at a large aperture, of something fairly bright, such as a blank area of sky, and t...
by Peter M. Macdonald
Wed Jan 22, 2020 4:16 am
Forum: Equipment Discussions
Topic: Raynox 5320
Replies: 35
Views: 5932

Flocking materials are available in the UK from some of the specialised dealers in astronomical telescopes. This one seems to get good reviews on some on the astronomy for a - https://www.firstlightoptics.com/telescope-flocking-material/black-velour-telescope-flocking-material.html . The usual cavea...
by Peter M. Macdonald
Sat Nov 09, 2019 5:24 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Snail on black plastic sheet
Replies: 5
Views: 1188

Helix aspera? for your snail? Common European garden creature.
by Peter M. Macdonald
Fri Jun 28, 2019 3:44 am
Forum: Equipment Discussions
Topic: 135mm EL Tube Lens Test Suggestions
Replies: 18
Views: 1625

Robert, I cannot help with your question, but it sure is good to see that you are back online asking it.
by Peter M. Macdonald
Fri Jun 28, 2019 3:42 am
Forum: General Discussion Forum and Community Announcements
Topic: Exhibition in Edinburgh
Replies: 0
Views: 658

Exhibition in Edinburgh

For those of you who will be in Edinburgh this summer, you may wish to visit the new Levon Biss exhibition entitled Microsculptures. I was lucky enough to be at the preview yesterday evening. The exhibition opens tomorrow and will run until September. It is in Inverleith House, within the Royal Bota...
by Peter M. Macdonald
Sun Jun 23, 2019 1:04 pm
Forum: General Discussion Forum and Community Announcements
Topic: Robert OToole
Replies: 31
Views: 4796

That is good news. When you are fit enough to read this Robert, all my best wishes for your health.
by Peter M. Macdonald
Sat Jun 22, 2019 2:01 am
Forum: General Discussion Forum and Community Announcements
Topic: Robert OToole
Replies: 31
Views: 4796

Delighted that Robert is on the mend. Let us all hope that his recovery continues.
by Peter M. Macdonald
Thu Jun 20, 2019 3:04 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Optical aberration or a possible stack artifact?
Replies: 19
Views: 3763

It is a simple matter to try immersing the amber in fluid to see if Enrico is correct. I rather suspect that he is. The easiest and cheapest liquid with a very similar refractive index to amber, at least here in the UK, is to use Johnson and Johnson Baby Oil. The citrus scented version is quite plea...
by Peter M. Macdonald
Sun Jan 20, 2019 4:42 am
Forum: Equipment Discussions
Topic: Minimum size of optical breadboard
Replies: 34
Views: 8173

Mawyatt,

even if you have to use inkject output, just take the output to the local copy shop and get a photocopy of it. Normal photocopiers use the same process as laser printers.

Peter
by Peter M. Macdonald
Sat Jan 19, 2019 5:49 am
Forum: Equipment Discussions
Topic: Minimum size of optical breadboard
Replies: 34
Views: 8173

Chris,

Interesting to know that acetone can be used as a transfer for a laser print.

Like your idea of labeling the holes with their drill sizes.

Peter
by Peter M. Macdonald
Fri Jan 18, 2019 2:49 pm
Forum: Equipment Discussions
Topic: Minimum size of optical breadboard
Replies: 34
Views: 8173

Laying out for hole punching and drilling using scribes can be difficult. It is often easier to do the layout on a computer first. This can be in any software which allows the precise placing of small dots at the centres of the desired drilling positions. Then print out, either on large sticky label...
by Peter M. Macdonald
Sat Dec 29, 2018 7:34 am
Forum: Photography Through the Microscope
Topic: Diatoms and Radiolarians
Replies: 14
Views: 2886

Robert, these are lovely. I always like good darkfield pictures of radiolarian.

Are your samples from Germany coming from a commercial source?