Eyepiece projection with a webcam question

[John K]

Just wondering if anyone on this forum is doing eyepiece projection with a webcam to get a larger image scale?

If so, can you offer any advice equipment for this?

e.g. is a variable projection unit the way to go?

what eyepieces are most usefull and what focal length?

how do you attach the webcam to the eyepiece projection unit?

Look forward to comments!

John K

[davidpretorius]

my biggest nightmare.
newt 1250fl f5
from a previous thread

"my f5 10" fl1250 gs reflector with the 2" crayford refused to do any eyepiece projection with the toucam. could not get any focus at all.

Matt from T&A was at a loss as well. Seems to work well that eyepiece projection unit in refractors, but not my reflector.

Also the t thread adaptor for the toucam would not work with digi t to produce a focussed image. ie when you literally screw the t thread onto your eyepiece and then straight into the toucam without the lens.

No-one seems to know why, Matt has machined the t thread down and machined the eyepieces down to make sure that the lens of the eyepiece is really close to the ccd of the toucam, he offered me this, but every eyepiece i owned would have had to be machined!

I think it was bert that suggested going the other way, have 95 - 140 mm between eyepiece and ccd, but again starting to get expensive with an extension needing to be machined.

the williams optics digiscope at $69 gives me low mag for long exposures, and the prime focus adapter will give a 5 or 6mm fl for planets. I think i am covered!

......"

[seeker372011]

I think both Gary beal and Robby have done a fair amount of eyepiece projection work :poke:

[h0ughy]

I use the scopetronics Maxview 2", you can mount whatever you like on the end of it and put in what ever you want in the form of eyepieces