A photographer has used his 3D printer to create a powerful 900mm reflector telescope that’s so easy to place collectively that “it’s like assembling furnishings from IKEA.”
The design, which Jonathan Kissner refers to as “Hadley,” has a 114/900mm reflector with a spherical major mirror housed in principally 3D-printed elements.
Kissner additionally says that his Hadley telescope can do double obligation as a terrestrial scope for watching wildlife and whilst a gradual f/8 zoom lens for pictures.
Capturing Images Via the DIY Telescope
Kissner takes photos by the telescope with a Google Pixel 4a cell phone. To fight the atmospheric turbulence that wreaks havoc on long-exposure photos, he opted to shoot a video at 60 frames per second.
“Any given body was worse than what we’d see on the eyepiece,” Kissner tells PetaPixel. “Our mind does a variety of work making sense from a loud picture, and compositing on the fly. This course of, known as ‘fortunate imaging,’ can produce outcomes far past what the attention sees, however this wants higher information.
“Ultimately, I’ll be utilizing an astrocam with the 3D-printed telescopes, however one step at a time.”
As soon as saved, Kissner imports the movies he captures into an app known as the Planetary Imaging PreProcessor (PPIP) after which aligns them with one other known as Registax. Each are freeware accessible on-line. Then, after some extra picture processing utilizing GIMP, and he finally ends up with a usable picture that’s worthy of sharing on-line.
Kissner hopes to have a digicam attachment designed for future use. He additionally has one other telescope design on his website in addition to a focuser and a Newtonian mirror cell for a reflector telescope.
Creating the DIY Telescope
Kissner determined to create his DIY telescope because of the plethora of what he calls “pastime killer” scopes within the $100 to $200 vary, which can be troublesome to make use of with shoddy elements.
“It’s my hope that by releasing this, extra individuals will discover an open door to planetary statement and entry-level astrophotography,” wrote Kissner on his Printables construct log.
Hadley is definitely his second try at 3D printing a workable telescope. His first one was extra of a pathfinder to refine his design. That scope was a lot bigger, being a 152/1300mm giant crimson reflector telescope that Kissner admits was very exhausting to construct. Nevertheless, with the teachings realized in that design, he was capable of create a common design that was each accessible and sensible, whereas being straightforward to duplicate.
The essential design is centered round elements which can be printed on a typical FDM 3D printer. Every mannequin has been positioned in its strongest orientation and with out the necessity for wasteful helps which may add time and value to the prints. There are a complete of 27 totally different elements to 3D print. The design additionally makes use of one type of screw (in various lengths) and nuts to maintain issues easy, and in line with Kissner, both metric or imperial works.
The largest problem for Kissner was the mirror itself. A standard parabolic mirror present in giant telescope arrays would have been prohibitively costly for a telescope this measurement. However Kissner discovered that with the focal size he was going for and its ratios, a spherical mirror was a cheaper stand-in. Kissner additionally found in his analysis that many commercial-built scopes make an analogous compromise.
Kissner was capable of finding mirror units for a 114/900mm spherical major and elliptical secondary pair on eBay or AliExpress for about $20, though he mentioned that that is vulnerable to fluctuation. There may be additionally an inventory for the same mirror set on Amazon. Add to that the $100 in printing supplies and different elements, plus a very good set of eyepieces for $50, and you’ve got a fairly efficient telescope for below $200.
A whole listing of elements and plans for constructing the telescope can be found on Printables.
The design additionally lends itself to customizations, with add-on starburst results together with the six spike type of the brand new James Webb telescope, the 4 spike type of the Hubble House Telescope, or perhaps a diffraction spike free look.
Picture credit: All images by Jonathan Kissner.