aperature stop

[fizzy123]

But is it ok to remove it. By removing it will I get a true clear 60mm aperture.

[MooEy]

usually manufacturers measure the size of the objective and the focuser before making the baffles. eyepiece come in 1.25inch and 2inch. so for a 2inch focuser, the baffles must be wide enuff to prevent vignetting. for 1.25inch focusers they can be made to block out more of the stray light(ie. smaller hole in middle).

the first few baffles(counted from the objective) usually has a bigger hole than the baffles at the focuser side.

to see if the baffle would cause any vignetting, just peep from the back of the scope and see if any part of the glass is being blocked.

~MooEy~

[rcj]

Hi fizzy,
The aperture stop if in the middle of the tube is probably there to funciton as a baffle or judging from the "minds" of departmental-store-mass-production scopes, to limit the usable aperture of objective to minimize optical aberrations. :-)
rcj

[fizzy123]

Hmm... I was thinking, why are baffles needed, wat purpose :?

[rcj]

Baffles within the optical tubes of telescopes like refractors are used to reduce internal light flaring that will cause a reduction in contrast of the image formed at the eyepiece end. Baffles are normally knife-edge thin and help to guide the light path "properly" into the eyepiece. Internals of the tube are also usually coated with matt black paint or flock paper to further minimize glare.
rcj