Yes, that is what I am looking for! Need one that does 39V for the new COB LED I have just bought.

Most seem to go to a max of 30V.

I will mostly be doing video so need one that does not create flicker when powering the LED. Can the LED be driven directly by the unit?

Many thanks Saul.

The controller I am looking for is an LED controller as well in a box about the same size as an oscilloscope I used to use in school!

Cost was around £40.

I can remember somone posting an image of a desktop LED controller that had knobs for controlling current and voltage with a digital readout. Can anyone recommend such a device?

I have the use of a 3D printer and would be very grateful for any guidance on the design of a lens hood for a Mitty 10x and internal baffles for Thorlabs 3" tubes . I have contacted Nathan who made one and is willing to pass on his 3D printer file (as well as for the internal baffle tubes) but have ...

I have the Raynox 5320 and I would be interested in knowing whether it is worthwhile adding more of the diopters to get different tune lens focal lengths with a Mitty 10x.

Zeiss part 39 25 33. 120W. Any reasonable offer accepted. Located in UK.

Part number 39 25 24. 0 - 8V. 30VA. Located in UK. Any reasonable offer accepted.

I don't think that either Protostar or Beetle Black are available in or from the the UK easily.

Whilst researching flocking materials I came across this paint

http://stuartsemple.com/projects/black- ... -material/

The moon made a brief appearance in the Welsh sky last night and I found that it was in focus at 196.5mm from the sensor to the back of the 5320. Now I am searching for some suitable flocking material for the SM3 tubes. Genbro has this https://www.firstlightoptics.com/telescope-flocking-material.htm...

I have the 5320 onto a bellows and now it is obvious when the image comes into and out of focus. Distance I have come with at the moment is 192.79 from the sensor to the back of the 5320.

I will run another test when the moon can be seen!

I am wondering though whether the 5320 should be reversed?

The helicoid is this one https://www.thorlabs.com/newgrouppage9. ... up_id=3403 which gives 22.6mm of adjustment.

Should the 5320 be reversed and then the distance from the back of the Raynox to the sensor should then be 170mm as per the example given on this page where the distance from the front of the Raynox to the subject is 170mm? http://www.raynox.co.jp/english/dcr/dcr5320pro/index.htm I've tried Rik's su...

Hi Mike Yes, I have the Raynox 150 and 250 as well but there is big difference in size of glass between these and the 5320 which really feels like a quality lens. Nathan's review also prompted me to go for the 5320. Looks like a good option to use a combination of the x2 and x3 diopters to get diffe...

The info on the Raynox site gives: +2 diopter 486mm +3 diopter 311mm +5 diopter 170mm where these distances are from the top of the lens to the surface of the object when the lens is set at infinity. So what should the distance be from the D810's sensor to the front of the 5320 couplet? They also su...