Search found 290 matches

by micro_pix
Fri Jul 31, 2020 12:43 pm
Forum: Photography Through the Microscope
Topic: "Spicula from Sponge" "Tethia Eronium"
Replies: 4
Views: 171

Re: "Spicula from Sponge" "Tethia Eronium"

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Thanks for the info. It was the swabs I was using that were the issue, they covered the sensor in lint! I’ll look for the VGSO swabs.

Dave
by micro_pix
Thu Jul 30, 2020 4:05 am
Forum: Photography Through the Microscope
Topic: Porcelain Crab Zoea stage
Replies: 2
Views: 145

Re: Porcelain Crab Zoea stage

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They are definitely rather bizarre looking, at least it’s only one stage of the larval development that they have this inbuilt social-distancing feature. I can only assume it protects them from predators but they do have an issue turning around in confined spaces.

Dave
by micro_pix
Thu Jul 30, 2020 3:54 am
Forum: Photography Through the Microscope
Topic: "Spicula from Sponge" "Tethia Eronium"
Replies: 4
Views: 171

Re: "Spicula from Sponge" "Tethia Eronium"

I like the definition and the dark outlines of the spicules. I would say it would make a much more striking image if you cleaned up the background, as you say your sensor looks a bit dusty too. I had a few dust spots on the sensor of my 5D and had a go at cleaning it - it ended up looking like this!...
by micro_pix
Wed Jul 29, 2020 12:49 pm
Forum: Macro & Microscopy Articles
Topic: Marine Zooplankton of Southern Britain
Replies: 0
Views: 56

Marine Zooplankton of Southern Britain

. These three .pdf’s are the the work of David V.P. Conway and were published by the Marine Biological Association of Great Britain in 2012. Many of the species described will be found all around the European continent including in the Mediterranean Sea, no doubt across the North Atlantic too. There...
by micro_pix
Tue Jul 28, 2020 6:14 pm
Forum: Photography Through the Microscope
Topic: Porcelain Crab Zoea stage
Replies: 2
Views: 145

Porcelain Crab Zoea stage

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This is the the planktonic Zoea larval stage in the development of the Porcelain crab - Pisidia longicornis. It's just over 7mm from tip to tip.
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Pisidia longicornis Zoea
Pisidia longicornis Zoea
by micro_pix
Tue Jul 28, 2020 1:47 am
Forum: Photography Through the Microscope
Topic: Sea Water Salts
Replies: 3
Views: 135

Re: Sea Water Salts

. Thanks for the input Marco and Pau. I googled the concentration of the ions in seawater and after Chloride (0.546 moles/kg) Sulphate (0.0282 moles/kg) is the next most abundant anion, Ca is third most abundant cation. I also found a paper that covers the deposition of salts during seawater evapora...
by micro_pix
Mon Jul 27, 2020 12:47 pm
Forum: Photography Through the Microscope
Topic: Sea Water Salts
Replies: 3
Views: 135

Sea Water Salts

Hi, I let some seawater dry slowly on a slide over 24 hours and had a look under crossed polars. There were some lovely large NaCl crystals, which aren't anisotropic, but there were also some much smaller crystals which were. They weren't coloured under cross polarisation but they looked nice with a...
by micro_pix
Sun Jul 26, 2020 3:05 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Yellow Jacket
Replies: 5
Views: 161

Re: Yellow Jacket

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The white area spreading from between the mandibles could be Beauveria bassiana “Icing Sugar Fungus” or a similar fungus.

David
by micro_pix
Thu Jul 23, 2020 1:49 am
Forum: Photography Through the Microscope
Topic: Rotifers
Replies: 10
Views: 485

Re: Rotifers

Thanks Rob, I did try vaseline on the slide but had difficulty applying it consistently and would usually end up in bit of a mess. I didn’t consider using a small syringe, I’ll give it a try.

David
by micro_pix
Wed Jul 22, 2020 2:02 pm
Forum: Photography Through the Microscope
Topic: Parasitic marine isopod + Plankton
Replies: 9
Views: 263

Re: Parasitic marine isopod + Plankton

I like eye on the #2 (bottom) - good & very interesting thing for macro & stacking What does mean that "hair" on the crab's head (#4) - some sensor ? Or it is inside the body ? I agree that fish eye looks so perfect. The top eye is affected by the parasite tail and stacking artifacts. The markings ...
by micro_pix
Wed Jul 22, 2020 12:35 pm
Forum: Photography Through the Microscope
Topic: Parasitic marine isopod + Plankton
Replies: 9
Views: 263

Re: Parasitic marine isopod + Plankton

. Thanks for the kind remarks! I was using a darkfield condenser and Saul’s LED/flash unit on a BH2 and Zerene Stacker for stacking. The fish photo was taken with the fish in a petri dish of seawater and using the flash meant that I could (eventually) get a quick stack of 6 photos before the fish mo...
by micro_pix
Wed Jul 22, 2020 5:00 am
Forum: Photography Through the Microscope
Topic: Parasitic marine isopod + Plankton
Replies: 9
Views: 263

Re: Parasitic marine isopod + Plankton

Thanks for the comments.

The crab megalopa was around 2mm across the carapace.

David
by micro_pix
Tue Jul 21, 2020 5:49 pm
Forum: Photography Through the Microscope
Topic: Parasitic marine isopod + Plankton
Replies: 9
Views: 263

Parasitic marine isopod + Plankton

. This is the juvenile parasitic stage of a marine Isopod - Gnathia sp. I think. It's about 2mm long. During this stage they are blood sucking parasites of fish. The second photo shows it attached to a young Common Goby - Pomatoschistus microps . Note: It has eight legs, the front pair are hidden un...
by micro_pix
Sat Jul 11, 2020 11:17 pm
Forum: Photography Through the Microscope
Topic: 4
Replies: 1
Views: 208

Re: 4

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I C 3 4’s, 2 4’s + 3D4

Nice stereo, 4 out of 4!

David
by micro_pix
Wed Jul 08, 2020 8:23 am
Forum: Photography Through the Microscope
Topic: Rotifers
Replies: 10
Views: 485

Re: Rotifers

Lovely images. I have started using ring binder hole reinforcement discs on slides to try and prevent squishing things, it works quite well but the to smaller stuff it's like an Olympic swimming pool!

David