Peter Braubach

A tiny example of the Goldeneyes lichen or Teloschistes chrysophthalmus, about 5mm across with only one fruit or apothecia. The fruit is circular, golden orange and surrounded by cilia that look like eyelashes, which is where it gets its common name. The lichen was found on Hawthorn on Devils Dyke, part of the South Downs, in Sussex.

An example of the Goldeneyes lichen or Teloschistes chrysophthalmus, about 1cm across with no fruit (apothecia.) The lichen was found on Hawthorn on Devils Dyke, part of the South Downs, in Sussex.

A larger example of the Goldeneyes lichen or Teloschistes chrysophthalmus, about 2cm across with lots of fruit or apothecia. The fruit is circular, golden orange and surrounded by cilia that look like eyelashes, which is where it gets its common name. The lichen was found on Hawthorn on Devils Dyke, part of the South Downs, in Sussex.

A good day to check on the Goldeneyes lichen - Teloschistes chrysophthalmos - on Devils Dyke on the South Downs above Brighton - lots found - from a tiny one with a single 'eye', ones with no 'eyes' to lots of 'eyes'. #lichen #lichenGBI @friendssouthdowns.bsky.social @nationaltrust.org.uk

Wow! These drawings are fantastic.

that is a good idea, I will try.

It has an auto on maybe that's the culprit. Even if I do not move it much and it is on the desk without being touched.

I don't keep it in a box (because I'm lazy so option one is unlikely)

Cover of The Lancet:

@thelancet.com
www.thelancet.com/journals/lan...

Wow

They’re not wrong but wow, what a cover

Mahr digital calipers with the LCD very dim as a first sign of draining battery.

My Mahr/MarCal digital caliper eats CR2032 batteries for lunch (lasts not even 2 wk with occasional use). Is this normal or is it broken somehow?

I cannot even remember when I last changed the battery in the cheap WorkZone calipers.

Harder to observe with a 10x lens. Tend to not react well with spot tests. Difficult to fit under a microscope.

Wenn die Löcher halt genau 3 mV Abstand brauchen. Was soll man dann anders tun? 🤷‍♀️

Aus Pathologensicht ist hier nix einzuwenden.

Mycelium macro #fungi #fungifriends #macro 📷🍄‍🟫

Now for the next problems - triggering the camera from either software or arduino. The alpha 7 (R IV) only accepts trigger via usb-c *cough* sony multiport or bluetooth...

maybe via glibphoto2 in micromanager but I was not yet successful with building mm in ubuntu.

Large screen view of the sony alpha camera, small screen the basler camera with micromanager - now with a fairly usable image.

I provisionally attached the mirror with a minimum amount of sticky tape on 2 corners and left out the holder part. And that worked 2/2.

Large screen view of the sony alpha camera, small screen the basler camera with micromanager. the small image is heavily distored

Urs, thank you! I tried loosening the screws and at first it did not change anything, but then I noticed that someone had removed the leaf spring (the mirror is maybe thicker than spec?) and the 2 rubber pads in the filter holder were pressing against the mirror. 1/2

The Green Wall, a solution for the Sahel ? - Willagri - Comprendre les enjeux de l'agriculture Across Africa, from Senegal to Djibouti, the world’s longest vegetative wall is being built: the Great Green Wall. It is 7,600 km long. More than just a reforestation program, the.

Something along these lines. The regular circular pattern could match the image lower in the article

willagri.com/2023/05/10/t...

I will try. Thank you!

It is a 50/50 plate, not optimal for splitting to a second camera but it is what I have lying around (from a big box of optomechanics/optics stuff I bought off a startup liquidation).

Will do tomorrow! Thank you.

I am building a custom setup with a consumer mirrorless camera and a c-mount guide cam (for triggering) to di large area macro photography

Unfortunately the mirror introduces a lot of astigmatism.

Is there some option to mount a beam splitter prism in the cubes for dichroic filter sets?

I have a weak spot for good optics (mostly for looking at small stuff up close) and can totally understand that it had to happen (and would like to have a look through one someday).

Have fun!

patrick star and spongebob squarepants are standing next to each other in a dark room . Alt: patrick star and spongebob squarepants are standing panicking in a room.

Aaaah

A set up game of CoraQuest - a dungeon made from multiple 3x3 in cards with hero and monster standees and lots of meeples

Boxes of the CoraQuest boardgame and Expansion keep on questing.

We played through the final 3 games of a CoraQuest campaign today. It was fun ! A nice progression of power - in the end we just smashed through the simple mobs and the bosses. Maybe we have do dial up the difficulty the next time.

Good luck and fingers crossed for the grant application!

I made my best slides on the trip to the conference...

I ordered some beam splitter prism cubes from AliExpress and hope to make a 3d printed mount that fits into the cube.

Optical setup for macro photography with a mitutoyo 5x, a thorlabs cube with a 50/50 beam splitter mirror directing light to a lens tube assembly with a 100mm achromat doublet and a industry camera (left) and the main imaging axis with a raynox dcr150 and Sony mirrorless camera

With the rail done my #optics #microscopy project is going into the next phase meaning new problems.

I want to use a beam splitter to direct some light to a guide camera (small Basler Cam on the side). However astigmatism from the 50/50 mirror is so bad that I don't get a usable image.

Help?!

bsky.app/profile/pete...

A 90x60 cm print of a Cladonia podetium on our dining table. A piece of foam with a toothpick is laying on top of the poster.

Detail of the toothpick with the sample depicted on the print mounted on it.

My first try at large format printing from macro photography.

Turned out nice, now I need to find a good place for it.

Laptop, Arduino on a breadboard and a rats nest of jumper wires next to a wemacro rail.

My project comes together, slowly. The #WeMacro focus stacking rail can be controlled by #micro-manager with an adapted mm custom Arduino.

Next step will be triggering the Sony alpha camera - likely via a TTL pin and not directly from software.

#macrophotography

Thread adapters and a short sm1 lens tube packed in small bags as well as a ref ThorLabs box-o-snacks!

It's nice to receive stuff from Thorlabs. Even if it's just some thread adapters. Thank you!

Ah ok da kann ich mir was drunter vorstellen.