Talk:Cassegrain reflector

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[edit] Cleanup edits

Cleaned up problems created by wholesale moving of sections from other articles. Deleted Schmidt camera since it is not a cassigrain. Moved other types into organized sub types. Removed "VISAC" since it does not seem to be a distinct sub-type, an external review[1] states that it is basicaly a Richey-Chretien with an added a "field corrector lens" to correct field curvature in wide field applications. Moved it down to Commercially produced Cassegrains and moved extended info to its parent page Vixen (telescopes).Halfblue 04:25, 24 September 2006 (UTC)

[edit] Schmidt Cassegrain Field of View

The section on the Schmidt Cassegrain currently begins by stating that it is a 'classic wide field instrument' or words to that effect.

If you click on the link to the main Schmidt Cassegrain article and look at ITS section 'applications' you will see that it says the Schmidt Cassegrain is a narrow field instrument - a direct contradiction.

My own understanding is that the Schmidt Cassegrain has a limited (narrow) field of view i.e. the dedicated article is correct while the general cassegrain article is wrong on this point. I think the author may have got mixed up with the Schmidt Camera (a different instrument) which is classic and does have a wider field of view.

Propose to delete or amend the claim that the Schmidt Cassegrain is a wide field instrument.

To back up what I have said, look at: [2] a review of a very common and typical SCT (Schmidt Cassegrain Telescope). One of the 'cons' noted is 'narrow field of view'. Look at the first bullet point at the bottom of the page here: [3]; look at the last sentence of the first 'catadioptrics' paragraph here: [4]. —Preceding unsigned comment added by 83.67.127.181 (talk) 12:24, 12 September 2007 (UTC)