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Luca
Unregistered guest
Posted From: 151.28.30.175
Posted on Tuesday, September 13, 2005 - 9:00 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

I've buy some 1000 line/mm diffraction grating to build the spectroscope. The ditance between the slit (made with two single edged razor blade)and the viewing hole is 23 cm about.....
....but lines of the spectrum are too much close themselves.

How can I obtain a larger spectrum, with more distance between the single lines?
Must I change the distance from the slit and the viewing hole, or the distance of lines is only determined by the 1000 line/mm diffration grating?
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Simon Quellen Field (Sfield)
Senior Member
Username: Sfield

Post Number: 676
Registered: 12-2004
Posted on Tuesday, September 13, 2005 - 9:45 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

If the lines are overlapping, the slit is too large.
If the lines are distinct, but you just want more distance between them
to see them better, make a simple telescope from two lenses and place
that on your side of the grating.

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