Condenser settings?
Moderators: rjlittlefield, ChrisR, Chris S., Pau
- dragonblade
- Posts: 200
- Joined: Sat Oct 18, 2014 11:16 pm
I tried to insert a cardboard iris within the microscope but there's barely any room above the built-in light source. It's way too tight and awkward.
By the way, the globe in my desktop lamp is 11W. Though you're recommending a 60w globe? 11 watt already seems super bright to me. Don't want to harm my eyes shining something excessively bright off a microscope mirror. Though I guess the objectives would reduce the intensity of that light as it passes through them?
By the way, the globe in my desktop lamp is 11W. Though you're recommending a 60w globe? 11 watt already seems super bright to me. Don't want to harm my eyes shining something excessively bright off a microscope mirror. Though I guess the objectives would reduce the intensity of that light as it passes through them?
- dragonblade
- Posts: 200
- Joined: Sat Oct 18, 2014 11:16 pm
- rjlittlefield
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I expect that's actually a "60W equivalent", with that rating based on the amount of light that it puts out. If so, then actual electrical power will be around 10W (9-11 depending on brand).dragonblade wrote:Today, I bought a 60W LED globe from a supermarket.
If that's not the case, and it really is 60W power consumed, then please provide more information about the bulb. Having such a bright light could be useful on occasion.
--Rik
Some Work Lights are impressive, eg http://www.maxxima.com/products/product ... Light.html. The reflector shape & size is down to tradition, thought it serves as a heatsink. [edit]My rechargeable one is 20W, some are more. Not quite as bright as a 500W halogen - yet.
Last edited by ChrisR on Wed Mar 07, 2018 2:58 pm, edited 1 time in total.
Chris R
- rjlittlefield
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https://www.amazon.com/Halogen-Equivale ... B01KFVFQEI claims 100W input, 500W equivalent, 8000Lm.ChrisR wrote:Not quite as bright as a 500W halogen - yet.
--Rik
- dragonblade
- Posts: 200
- Joined: Sat Oct 18, 2014 11:16 pm
So I set up the desktop lamp (with the brand new LED globe) and the cardboard cutout iris at the recommended distance from my microscope with the mirror attached. Problem is I just cannot focus on the iris at all with the condenser wheel. So I doubled the distance of the lamp and cardboard iris from the microscope and that didn't make much of an improvement - the iris is still extremely soft and fuzzy while looking through the eyepiece. So then I tripled the distance - still no good. I moved the pair to the opposite end of the table and I still cannot focus on the iris.
By the way, I found it very difficult to get even illumination with the desktop lamp and 4x lens. I think I got it very close though. I think I'll go back to using the built-in light and try and guess the condenser setting by approximation. Sorry but I just cannot get my cutout field iris in focus - nowhere even close.
Edit: Ive just tried the new globe in the desktop lamp with the 40x objective and it is slightly dim. I lowered the condenser setting a little from the top and closed the condenser iris a little but the illumination is not particularly great.
By the way, I found it very difficult to get even illumination with the desktop lamp and 4x lens. I think I got it very close though. I think I'll go back to using the built-in light and try and guess the condenser setting by approximation. Sorry but I just cannot get my cutout field iris in focus - nowhere even close.
Edit: Ive just tried the new globe in the desktop lamp with the 40x objective and it is slightly dim. I lowered the condenser setting a little from the top and closed the condenser iris a little but the illumination is not particularly great.