Hey! This thing is still a Work in Progress.
Files, instructions, and other stuff might change!
EF Mount Module to 1.25 inch telescope focuser
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Published on August 21, 2011
Derived from
EF Mount Module
by AlexEnglish
Description
Simple modification of this great EF mount. Thank you, AlexEnglish!
I did not believe it at first, but it really does fit tightly.
With this you can take photos through any telescope, as long as you reach focus (No problem with a 102/1300 Maksutov, could not get in far enough on a 76/300 newton-dobson though).
These adapters usually cost ~€20 ($28) from a telescope shop, and this probably 5% or less, depending on material, support and setting.
The Mak does have a T2 mount, but for using a barlow, this is a quick and inexpensive solution! :-)
Needs fixing in the future:
Spacer, so tightening the tube into the focuser is easier (now the focuser screws are pressing directly against the EF mount disc)
(Sidenote for the DailyEarring project: It'll be back. Sorry for the hiatus. In the mean time, enjoy the printer live-cam at up.no-ip.org:8888 untill my site is back up :-) )
I did not believe it at first, but it really does fit tightly.
With this you can take photos through any telescope, as long as you reach focus (No problem with a 102/1300 Maksutov, could not get in far enough on a 76/300 newton-dobson though).
These adapters usually cost ~€20 ($28) from a telescope shop, and this probably 5% or less, depending on material, support and setting.
The Mak does have a T2 mount, but for using a barlow, this is a quick and inexpensive solution! :-)
Needs fixing in the future:
Spacer, so tightening the tube into the focuser is easier (now the focuser screws are pressing directly against the EF mount disc)
(Sidenote for the DailyEarring project: It'll be back. Sorry for the hiatus. In the mean time, enjoy the printer live-cam at up.no-ip.org:8888 untill my site is back up :-) )
Instructions
###UPDATE NOTE 4.JULY 2012:
2- Future ideas: Ad a tube at the base of the 1.25" so the telescope does not rest against the camera mount, else tightening the telescope eyepiece screws is tedious.
1- For dailight use (450D on a Skylux 70/700 refractor) I painted the white part on the top disk and inside the small tube with a "Nail Polish Matte" (ebay ~€3) but any other laquer should work. Without the contrast and sharpness suffers greatly.
Attention! Achtung!
When printing on an pp3dp UP, scale to [[[ 0.99 ]]], else it will not fit!
My first print did not, and I was affraid it would damage my EF mount...
Then I printed it successfully with 0.3mm layer and FAST setting (usualy I use fine/0.2mm), and oriented the 1.25" tube upwards...
Needs fixing in the future:
Spacer, so tightening the tube into the focuser is easier (now the focuser screws are pressing directly against the EF mount disc)
Other Ideas:
-turn around for more support material but smoother EF mount).
-Use black ABS or paint black (nailpolish...) to avoid ambient light problems
On a Cupcake you may want to print the thing in two parts and glue it together, but I don't really have a clue. Please share your experiance
2- Future ideas: Ad a tube at the base of the 1.25" so the telescope does not rest against the camera mount, else tightening the telescope eyepiece screws is tedious.
1- For dailight use (450D on a Skylux 70/700 refractor) I painted the white part on the top disk and inside the small tube with a "Nail Polish Matte" (ebay ~€3) but any other laquer should work. Without the contrast and sharpness suffers greatly.
Attention! Achtung!
When printing on an pp3dp UP, scale to [[[ 0.99 ]]], else it will not fit!
My first print did not, and I was affraid it would damage my EF mount...
Then I printed it successfully with 0.3mm layer and FAST setting (usualy I use fine/0.2mm), and oriented the 1.25" tube upwards...
Needs fixing in the future:
Spacer, so tightening the tube into the focuser is easier (now the focuser screws are pressing directly against the EF mount disc)
Other Ideas:
-turn around for more support material but smoother EF mount).
-Use black ABS or paint black (nailpolish...) to avoid ambient light problems
On a Cupcake you may want to print the thing in two parts and glue it together, but I don't really have a clue. Please share your experiance
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License
EF Mount Module to 1.25 inch telescope focuser by Schorhr is licensed under the Creative Commons - GNU GPL license.
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Excellent work, this is exactly the kind of thing I hoped to see the EF mount used for. Your photos look great.
In your instructions you mention printing in two parts and gluing. This is what I am doing for my microscope adapter. I have the part that will fit into the eyepiece socket on the microscope, which will nest into the EF mount and will be bonded with acetone. I should have it finished tomorrow,
then I can test and publish.
Also, I'm curious to hear more about the scaling you had to do to the mount. Does that have to do with the printer you're using, something with its settings, or an issue with the model? Mine was printed on a TOM at 100% and while very snug, didn't have to be forced at
all.
Thank you :-) The photo's turned out allright (just shot through the dirty window here :-) )
Looking forward to see your microscope results!
I am in luck, with the UP!+ I can just print it in one part.
Scaling: I think the UP!+ tends to create prints which are a bit thicker; Also if printing holes they sometimes end up beeing ~0.3mm smaller...
But it also depends on the settings (fast/normal/fine, 0.2mm-0.4mm layer thickness).
Usualy it's a bit better on 0.2/fine, but that's just the result of d
ifferent printers I suppose.
No clue if this is just the case with my printer, as I reset the calibration to default.
:-)