Colomation

[Tommo72]

Hi all, sorry if this is answeared elsewhere but, does the skywatcher 127 mak need colomating and if they do how do you know:icon_scratch:

total newbee

[barkis]

I believe collimation of this scope, is by push and pull screws on the rear mirror cell. Collimation is usually well held in this type of telescope, but if collimation does get out of kilter, it will be obvious in Image deterioration. Stars will exhibit tails, like a small comets.

Planetary and lunar detail will suffer too.

If you study a star image inside and outside focus, you will see a flaring of the light circle in the eyepiece as you approach image focus.

Looking through the focuser without an eyepiece in place in daylight, all the reflections you see, should all be perfectly concentric circles.

Now, someone who actually owns one of these, will enlighten you a bit more probably.

Ron.

[Astro_Baby]

Maks generally hold collimation well.

Easy test is to get a star into the centre of the eyepiece view and then defocus. If the image turns into something that looks like a series of concentric circles then all is well. If sky conditions arent good then the concentic circles will blur into a kind of Polo mint shape.

Take a look at the pic below - this is an ideal view more usually unless the sky is very clear you circles will blur.

[Tommo72]

thanks for the replies.