I woke up early this morning and I've been attempting to make a spreadsheet to calculate the ideal Paracorr tunable top setting based solely upon the field stop location of the eyepiece, and although in its present state it appears to give correct answers for all of the 2" TeleVue eyepieces, it gives incorrect answers for all of the 1.25" TeleVue eyepieces. I've attached it here. It was generated in UNIX, and not using Excel, but I saved it in an excel format, so I hope it looks normal on your computer. If not, please let me know. Feel free to massage or alter it at will, as you may find a better solution than I have found, and you may just solve the 1.25" eyepiece problem as well. So far the only way I have gotten 1.25" eyepieces to read correctly is to multiply the added height from the 1.25" adapter by a factor of 3. This modification however is not present in the spreadsheet as given here, as it seems to have no reason for being so.
The only permitted user input is for:
1) Field Stop location in inches (remember to apply the proper +/- sign for this value)
2) 1.25" eyepiece adapters added height in inches (zero for no adapter, as with 2" eyepieces)
Once you have entered these two parameters, read the spreadsheets calculated value for your eyepiece on the extreme right hand side. Then compare this value with the nominal values provided for the various Paracorr settings, and choose the Paracorr setting for which the provided value most closely matches the value as seen on the extreme right for your eyepiece.
-------------------- My philosophy, in essence, is the concept of man as a moral being, with his own happiness as the moral purpose of his life, with productive achievement as his noblest activity, and reason as his only absolute.
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Re: List of Paracorr settings for all brands of EP
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