TS-Optics M4 knurled screw for secondary mirror adjustment, length 45 mm
Set of three knurled screws allows collimation of the Newton secondary mirror without tools
♦ Continuous thread M4 with a length of 45 mm
♦ The tip of the thread is milled to avoid pressure points on the secondary mirror mount
♦ Unintentional twisting of the secondary mirror during collimation is avoided
♦ Grippy knurled head made of plastic with a diameter of 12 mm, so the screws are also suitable for smaller secondary mirrors
€23.90
(VAT incl.)
Reference:
M4Rändel
TS-Optics knurled screws for secondary mirror collimation
Adjust the secondary mirror without tools, precisely and without the risk of a key or screwdriver falling on the primary mirror, for example.
Compared with normal small collimation screws, TS knurled screws have a number of advantages, such as flat milling surface. If there is a burr on the screw, it will dig into the aluminum secondary mirror mount. The collimation accuracy decreases. Also, the secondary mirror can twist during collimation. Therefore, a precise adjustment is impossible.
The screws fit, among other things, on all Newtonian telescopes from GSO, TS-Optics or Skywatcher and on all telescopes where the secondary mirror is fitted with M4 screws.
Especificaciones:
| Thread: | M4 thread with 45 mm length |
| Thread material: | Steel |
| Knurled head: | Diameter 12 mm, made of plastic |
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