Thingiverse
ZWO EAF adapter for Samyang 135mm lens by drhollen
by Thingiverse
Last crawled date: 3 years ago
This is an adapter system to mount a ZWO EAF electronic automatic focuser to a Samyang 135mm f/2.0 ED UMC lens for astrophotography.
This is similar to other popular EAF mounts for William Optics Redcat 51 telescopes, but specifically made to fit this lens. My design also is better balanced as the motor is symmetrical down the middle of the dovetail. The William Optics CAT-series mounting ring, as used on the Redcat 51, has an inside diameter of 70mm and is a perfect fit for the Samyang 135mm lens. My lens is a Canon EF-mount lens, but it should work on the Nikon F-mount lenses as well. The cinema lenses won't fit due to the aperture gear teeth. The aperture ring is covered by the mounting ring, so set it to the desired aperture before clamping it down or screw it aperture step-down rings to the front of the lens if you have those. This lens works so well, I've been shooting it fully open at f/2.0. Others prefer f/2.4 or f/2.8, which give you 18-point diffraction spikes on bright stars.
I've tried this on William Optics Dual-Sided dovetails, both 210mm and 245mm and it works well. I've also used it on a cheaper SVBony 210mm dovetail and it works equally as well, but the bolts are different length. Actually, the spacing of the SVBony dovetail gives more mounting option.
I chose to mount the ASIair pro on the end, but there isn't enough room on the William Optics dovetails to use the center 1/4" thread, so I used one of the four offset M4 threads, which needs one of the dovetail bushings to fit. The SVBony dovetail is shaped different and has a different part.
If you have a filter wheel, you can reposition the riser at the end of the dovetail to allow the filter wheel to freely rotate, and put the ASIair up at the front, but I didn't want the heat to rise up and affect the images. Also, I use a T-Link TL-WR902AC mini travel router to extend the Wi-Fi range and use Jaewook Chung's mount adapter https://www.thingiverse.com/thing:4621599 to attach the TP-Link router and power supply to the top the ZWO ASIair Pro. That would be too high if mounted in front. I've made my own mount for the TP-Link router up at the front, and use his clips to hold the router and power converter to my adapter.
The single-piece focus ring is a slight interference fit - carefully slide it on the focuser on the lens. There is adjustment on the EAF adapter, so once you slip the belt on, just slide the EAF down and tighten the bolts to tension it.
You will need the following parts to install this on your lens:
William Optics CAT-series mounting ring
William Optics CAT-series handle bar (optional)
2GT 16-tooth timing pulley with 5mm bore (20-tooth will also work)
2GT 308mm length x 6mm width timing belt
2X M4x8 socket head cap screws (SHCS) to mount EAF to adapter with or without washers. Screws come with EAF.
3X M6 hex nuts - two for EAF adapter and one for TP-Link adapter
If you use a William Optics Dual-Sided 210mm or 245mm dovetail plate, use the following bolts:
2X M6x60 SHCS for riser
2X M6x20 SHCS for EAF adapter
1X M4x16 SHCS for ASIair Pro
1X M6x16 SHCS for TP-Link adapter
I didn't use washers with the William Optics dovetails
If you use a SVBony Vixen-style dovetail plate, use the following bolts:
2X M6x55 SHCS for riser
2X M6x16 SHCS for EAF adapter
1X M4x12 SHCS for ASIair Pro
1X M6x12 SHCS for TP-Link adapter
I did use washers with the SVBony dovetail except for the ASIair Pro
I printed the riser with 100% infill and the other parts with 50% infill.
This is similar to other popular EAF mounts for William Optics Redcat 51 telescopes, but specifically made to fit this lens. My design also is better balanced as the motor is symmetrical down the middle of the dovetail. The William Optics CAT-series mounting ring, as used on the Redcat 51, has an inside diameter of 70mm and is a perfect fit for the Samyang 135mm lens. My lens is a Canon EF-mount lens, but it should work on the Nikon F-mount lenses as well. The cinema lenses won't fit due to the aperture gear teeth. The aperture ring is covered by the mounting ring, so set it to the desired aperture before clamping it down or screw it aperture step-down rings to the front of the lens if you have those. This lens works so well, I've been shooting it fully open at f/2.0. Others prefer f/2.4 or f/2.8, which give you 18-point diffraction spikes on bright stars.
I've tried this on William Optics Dual-Sided dovetails, both 210mm and 245mm and it works well. I've also used it on a cheaper SVBony 210mm dovetail and it works equally as well, but the bolts are different length. Actually, the spacing of the SVBony dovetail gives more mounting option.
I chose to mount the ASIair pro on the end, but there isn't enough room on the William Optics dovetails to use the center 1/4" thread, so I used one of the four offset M4 threads, which needs one of the dovetail bushings to fit. The SVBony dovetail is shaped different and has a different part.
If you have a filter wheel, you can reposition the riser at the end of the dovetail to allow the filter wheel to freely rotate, and put the ASIair up at the front, but I didn't want the heat to rise up and affect the images. Also, I use a T-Link TL-WR902AC mini travel router to extend the Wi-Fi range and use Jaewook Chung's mount adapter https://www.thingiverse.com/thing:4621599 to attach the TP-Link router and power supply to the top the ZWO ASIair Pro. That would be too high if mounted in front. I've made my own mount for the TP-Link router up at the front, and use his clips to hold the router and power converter to my adapter.
The single-piece focus ring is a slight interference fit - carefully slide it on the focuser on the lens. There is adjustment on the EAF adapter, so once you slip the belt on, just slide the EAF down and tighten the bolts to tension it.
You will need the following parts to install this on your lens:
William Optics CAT-series mounting ring
William Optics CAT-series handle bar (optional)
2GT 16-tooth timing pulley with 5mm bore (20-tooth will also work)
2GT 308mm length x 6mm width timing belt
2X M4x8 socket head cap screws (SHCS) to mount EAF to adapter with or without washers. Screws come with EAF.
3X M6 hex nuts - two for EAF adapter and one for TP-Link adapter
If you use a William Optics Dual-Sided 210mm or 245mm dovetail plate, use the following bolts:
2X M6x60 SHCS for riser
2X M6x20 SHCS for EAF adapter
1X M4x16 SHCS for ASIair Pro
1X M6x16 SHCS for TP-Link adapter
I didn't use washers with the William Optics dovetails
If you use a SVBony Vixen-style dovetail plate, use the following bolts:
2X M6x55 SHCS for riser
2X M6x16 SHCS for EAF adapter
1X M4x12 SHCS for ASIair Pro
1X M6x12 SHCS for TP-Link adapter
I did use washers with the SVBony dovetail except for the ASIair Pro
I printed the riser with 100% infill and the other parts with 50% infill.
Similar models
thingiverse
free
Samyang 135mm f/2.0 ED for astronomy with EAF by RomanHujer
... 16teeth/bore 5mm
4x m3x10mm imbus screew
4x self tapping screw 2x6
1x rj45 - pcb on easyeda
update
2021-01-01 add beld tensioner
thingiverse
free
Fine Focus for Samyang 135mm lens
... and hex nuts, also the holes for mounting require 6mm bolts or smaller.
feel free to modify and tweak to your own needs
enjoy :)
thingiverse
free
Vixen Dovetail Adapter for William Optics RedCat by Monsybaer
...his https://www.thingiverse.com/thing:3742835 and changed it.
supported the mounting screw hole for the guide scope a little bit.
thingiverse
free
Aperture ring for Samyang 800mm f/8 by goldensuneur
...ces the aperture helping with focus and sharpness.
the freecad file is included if one need to adapt this design to another lens.
thingiverse
free
ZWO EAF RAP2,5 Mount by K_Bahr
...e zwo eaf on the ts optics 2.5" rap draw tube
additional material used:
grub screws,
t5/200 belt
two thin but strong springs
thingiverse
free
ASIAir Pro + TP Link Holder (with space) by jaewookc
...router with 1cm space between devices. the space is added to prevent asiair pro from overheating. no screw is needed to assemble.
thingiverse
free
CEM70G - iGuider ZWO Replacement by Mcrapo
.... this will allow the zwo asiair pro to be able to see the camera and utilize the built in optics that are present on the mount.
thingiverse
free
Pentax K-mount to Pentax Q adapter by lister6520
...ture as described above.
the adapter does not have a tripod mount, something which i intend to do when i find some time for it.
thingiverse
free
guide scope adapter
...guide scope adapter
thingiverse
dovetail adapter for the williams otpics zenithstar 61 telescope and the zwo 30 mm guidescope
thingiverse
free
ZWO EAF mount for William Optics RedCat 51 (SpaceCat) by domino89
...extra stability. it is optional. two m4 screws are probably enough.
bracket is secured to the telescope mount by two m3x45 bolts.
Drhollen
thingiverse
free
Netgear Orbi Voice RBS40V bracket by drhollen
...oice model is a unique size and requires ventilation holes due to the speaker.
remix of:https://www.thingiverse.com/thing:4350894
thingiverse
free
EL flat-field panel for astronomy by drhollen
...th one screw so that it can neatly fit into the flat panel as shown in my photo.
these parts are interference press fit together.
Eaf
3d_export
$120
Ch47 EAF Helicopter 3D Model
...licopter desert transport military heavy lift tandem rotoa textures materials
ch47 eaf helicopter 3d model tartino 38054 3dexport
thingiverse
free
EAF Mount for C5 by green_spider
...eaf mount for c5 by green_spider
thingiverse
simple bracket to mount the zwo eaf onto a celestron c5
thingiverse
free
Dew Shield for ZWO EAF by Hackschnitzel
...dew shield for zwo eaf by hackschnitzel
thingiverse
dew shield for the zwo focus motor eaf
thingiverse
free
Zwo EAF 3D Model by icimdengelen
...zwo eaf 3d model by icimdengelen
thingiverse
zwo eaf 3d model
i did it to develop accessories on it.
thingiverse
free
Skywatcher 150750 EAF rack by reticyte
... skywatcher 150750 eaf-compatible with my astroberry. inspired by astroberry focusor: https://github.com/rkaczorek/astroberry-diy
thingiverse
free
ZWO EAF RAP2,5 Mount by K_Bahr
...e zwo eaf on the ts optics 2.5" rap draw tube
additional material used:
grub screws,
t5/200 belt
two thin but strong springs
thingiverse
free
EAF adapter for ES127 FCD100 focuser
... telescope. it only uses the original locking screw from the focuser for attachment, and allows access to the adjustment screws.
thingiverse
free
ZWO EAF RAP2,5 Mount by K_Bahr
...rub screws (to attach the gears)
2 long screws e.g. (60mm x 4mm) or 4 grub screws to attach the cover
2 small but strong springs
thingiverse
free
EAF bracket for Explore Scientific 102 Telescope by skislalom1
... addition, it provides a hole for the optional temperature sensor and a slotted hole for a wire tie to hold excess wire in place.
thingiverse
free
ZWO EAF adapter for Celestron C9.25 by latunen
...own in slicer to get right dimensions.
this model doesn't fit to c8 of edgehd8 but i will make models for these scopes soon.
Samyang
turbosquid
$10
Samyang AF 14mm F2 new
... samyang af 14mm f2 new for download as ma, dae, fbx, and obj on turbosquid: 3d models for games, architecture, videos. (1559504)
turbosquid
$24
Samyang 24mm f/3.5 ED AS UMC Tilt-Shift lens for Nikon
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
thingiverse
free
Samyang 35mm F2.8 lens hood- Sony by benjamindesign
...samyang 35mm f2.8 lens hood- sony by benjamindesign
thingiverse
this is a lens hood for samyang 35mm f2.8
thingiverse
free
Samyang Bower Rokinon 85mm lens hood by opnordahl
...samyang bower rokinon 85mm lens hood by opnordahl
thingiverse
85mm lens hood for rokinon/samyang/bower 85mm lens
thingiverse
free
samyang reflex300mm f6.3 lens mount fuji fx-mount by kosuyoung
...3 lens mount fuji fx-mount by kosuyoung
thingiverse
samyang reflex300mm f6.3
fuji fx mount
just test samyang reflex300mm f6.3
thingiverse
free
Samyang AF 35mm F2.8 FE Lens Hood by bostwickenator
...samyang af 35mm f2.8 fe lens hood by bostwickenator
thingiverse
a lens hood for the samyang af 35mm f2.8 fe.
thingiverse
free
Rokinon / Samyang 7.5mm MFT Lens Cap by dc5ezs
...ng 7.5mm mft lens cap by dc5ezs
thingiverse
lens cap that snaps inside a rokinon / samyang 7.5mm micro four thirds fisheye lens.
thingiverse
free
Lens Cap (for Samyang 14mm f/2.8) by walter
...lens cap (for samyang 14mm f/2.8) by walter
thingiverse
lens cap for samyang 14mm ultra wide-angle f/2.8 if ed umc lens.
thingiverse
free
Samyang 135 flatbox by multitror
...uchtfolie-weiss-100x100-mm-el-folie-1010ws-p45968.html?&nbc=1
the m3 screws and the threaded insert are not really necessary.
thingiverse
free
Samyang 8mm FishEye Lens Cap by Jonatrank
...samyang 8mm fisheye lens cap by jonatrank
thingiverse
just scaled up a bit
Zwo
3d_export
$10
gerb zwo rf
...gerb zwo rf
3dexport
emblem of the western military district of the russian federation
thingiverse
free
Finderscope to ZWO by Galvenize
...finderscope to zwo by galvenize
thingiverse
adapts a zwo to a skywatcher (and alike) stock finderscope
thingiverse
free
ZWO asi 120 mc by Maniaquera
...zwo asi 120 mc by maniaquera
thingiverse
scale model of the zwo camera.
thingiverse
free
Dew Shield for ZWO EAF by Hackschnitzel
...dew shield for zwo eaf by hackschnitzel
thingiverse
dew shield for the zwo focus motor eaf
thingiverse
free
Dovetail Camera ZWO ASI by dester
...dovetail camera zwo asi by dester
thingiverse
dovetail camera zwo asi without fan
thingiverse
free
ZWO ASI Nikon Adapter by andrea_carminati
...zwo asi nikon adapter by andrea_carminati
thingiverse
zwo asi nikon adapter with 1,25" filter
thingiverse
free
ZWO ASI 294 Pro support by Gh14Cc10
...294 pro support by gh14cc10
thingiverse
remix of the great swiss body support for zwo asi2600mc pro, modified for zwo asi294 pro
thingiverse
free
ZWO 2600MM Cable Support by tooth_dr
...zwo 2600mm cable support by tooth_dr
thingiverse
zwo 2600mc cable support updated with '2600mm' lettering.
thingiverse
free
Zwo EAF 3D Model by icimdengelen
...zwo eaf 3d model by icimdengelen
thingiverse
zwo eaf 3d model
i did it to develop accessories on it.
thingiverse
free
ZWO ASi 294MCPRO Halter Schelle_78mm by rabit9
...zwo asi 294mcpro halter schelle_78mm by rabit9
thingiverse
zwo asi 294mcprohalter schelle_78mm
135Mm
turbosquid
$25
135mm Telephoto lens
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$5
canon lens 18-135mm
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$21
Canon EF-S 18-135mm 3.5-5.6 IS
...35mm 3.5-5.6 is usm for download as ma, max, ma, dae, and fbx on turbosquid: 3d models for games, architecture, videos. (1547967)
3ddd
free
Lamp Wolseley
...eichholtz производитель: eichholtz _http://www.eichholtz.com _ модель: lamp wolseley размеры: w-135mm d-140mm,...
3ddd
$1
SLV Ovo ES111
...chrome material steel voltage 240 volt height 245mm diameter 135mm maximum wattage 75 watt lampholder gu10 lamp type es111...
3ddd
$1
Tom DIxon Pipe Light
...от tom dixon pendant light d=150mm, h=650mm wall light d=135mm h=420mm table light d=130mm,...
3d_export
free
monster truck wheel toy
...the model is made in fusion 360.<br>- sizes: diameter 135mm depth - 65mm.<br>- formats: 3ds max 2020, max 2017,...
3d_export
$19
Pancakes with Filling
...vertex with more than 5 edges: 0<br>object:<br>- dimension mm: 135mm x 168mm x 101mm<br>- dimension cm: 13.5cm x 16.79cm...
3d_export
$19
Reversible Set Up Office Desk
...vertex with more than 5 edges: 0<br>object:<br>- dimension mm: 135mm x 168mm x 101mm<br>- dimension cm: 13.5cm x 16.79cm...
thingiverse
free
KDM_Face Base 135mm
...kdm_face base 135mm
thingiverse
the face base!
its a 135mm base perfect for any large models!
Lens
3d_ocean
$16
Lens
...lens
3docean
camera film lens video widescreen
a standard camera lens with reflections.
3d_export
$15
Lens optical lens 3D Model
...odel
3dexport
lens optical accessories for the tablet accessories electronics
lens optical lens 3d model sergio108 76763 3dexport
turbosquid
$1
Lens
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
3ddd
free
Massive / Len
...massive / len
3ddd
massive , встроенный
светильник потолочный massive len
3d_ocean
$9
50mm Canon lens
...50mm canon lens
3docean
50mm canon foto lens photo
canon lens 50mm 1.8 the most practical affordable lens to start with
turbosquid
$20
Camera Lens
...osquid
royalty free 3d model camera lens for download as c4d on turbosquid: 3d models for games, architecture, videos. (1414988)
turbosquid
$2
Axicon Lens
...osquid
royalty free 3d model axicon lens for download as max on turbosquid: 3d models for games, architecture, videos. (1169215)
turbosquid
free
Camera Lens
...quid
royalty free 3d model camera lens for download as blend on turbosquid: 3d models for games, architecture, videos. (1546983)
turbosquid
$2
MAGNIFYING LENS
...y free 3d model magnifying lens for download as blend and fbx on turbosquid: 3d models for games, architecture, videos. (1633553)
turbosquid
$1
MAGNIFYING LENS
...y free 3d model magnifying lens for download as blend and fbx on turbosquid: 3d models for games, architecture, videos. (1633707)
Adapter
3d_export
$10
Adapter 3D Model
...adapter 3d model
3dexport
adapter
adapter 3d model mur 20260 3dexport
archive3d
free
Adapter socket 3D Model
...dapter socket adapter
adapter socket n090211 - 3d model (*.3ds) for interior 3d visualization.
turbosquid
$400
cell adaptation
...
royalty free 3d model cell adaptation for download as blend on turbosquid: 3d models for games, architecture, videos. (1701655)
archive3d
free
Adapter 3D Model
...ups pc equipment
adapter extron n180813 - 3d model (*.gsm+*.3ds) for interior 3d visualization.
turbosquid
$5
usb adapter
...royalty free 3d model usb adapter for download as ige and stl on turbosquid: 3d models for games, architecture, videos. (1582234)
turbosquid
$15
Power adapter
...free 3d model power adapter for download as max, obj, and fbx on turbosquid: 3d models for games, architecture, videos. (1510024)
turbosquid
$8
USB adapter
...e 3d model usb adapter for download as max, fbx, obj, and dwg on turbosquid: 3d models for games, architecture, videos. (1713542)
turbosquid
$30
adapter.3ds
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$15
Nokia Adapter
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.
turbosquid
$15
Universal adapter
... available on turbo squid, the world's leading provider of digital 3d models for visualization, films, television, and games.