I stopped and filled a 12oz bottle with lake water on the way home today. Water that had never bothered me before made me cringe a little as I dunked my hand in it to submerge the bottle. It’s different putting your hand in water that you want to study bugs in.
Under the 10x loupe, the most numerous critter were these:
They don’t look exactly like any of the varieties of copepods I can find pictures of on the Internet, but they share enough features that I think I’m on the right track. I wonder if the one on the right is carrying eggs or what? Haven’t read up yet - just doing a trial run today.
Under the microscope, I find moving the slide under the objective to be a major pain in the rear. Also swapping objectives changes the center of the image a bit - what was centered perfectly at 40x takes some hunting to find at 100x and is nowhere to be found at 400x. This may be my inexperience talking, but I would think having the image remain centered from one objective to the next would be something of a given even with a cheap microscope. I learned how to offset it appropriately for each objective change, but I don’t think I should have to. If I stick with this hobby, I will invest in a stage that I can move around with dials, because moving the slide around on a stationary stage is not my favorite thing I did today.
This little guy looked like a snake that had swallowed a pig at 40x. I’m probably totally off, but that’s what it looked like to me. Some clear little cell-snake swallowed a big round green ball and was wondering what it was supposed to do next. It would sit still for 30+ seconds, then contract into round around the green ball, then extend and swim a bit, then stop.
I didn’t bother trying to do a good sketch of the bugs at 10x because they move around like little miniature lightning bolts, but I took the time to try and get a good sketch of the pig-swallowing-snake bug. I could have gotten the colors closer, but, as said, this was a trial run.
Anyway, I’m a little more comfortable with my tools today. Tomorrow will be “for real”
Regarding the light source, it is constant at first. After about 5 minutes is when it starts randomly changing brightness. I’ll get new batteries tomorrow and see if my “new” batteries were actually less new than I thought. The scope came with an AC adapter, but my “lab” doesn’t have a conveniently placed outlet yet. Will post results.
Edited by hippo.potamus, 24 April 2018 - 12:22 AM.