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Software Vault: The Gold Collection
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Software Vault - The Gold Collection (American Databankers) (1993).ISO
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cdr17
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optimax.zip
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OPTIMAX.DOC
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1993-05-01
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266 lines
PRESS [PAGE UP] AND [PAGE DOWN] TO SCROLL THROUGH HELP PAGES
PRESS ENTER TO RETURN TO THE MAIN MENU
-------------------------------------------------------
PAGE 1: THIS INDEX
PAGE 10: INFORMATION ABOUT THIS PROGRAM
PAGE 12: INSTRUCTIONS FOR USING OPTIMAX
PAGE 13: OPERATION OF THE PROGRAM
PAGE 14: EYEPIECE AND IMAGE SIZE CHART
PAGE 14: DIAGONAL SIZE CHART (AUTOMATIC MODE)
PAGE 17: CHART SHOWING RELATIVE AREAS
PAGE 18: DIAGONAL SIZE CHART (MANUAL MODE)
PAGE 20: USING THE "SLASH" COMMANDS
PAGE 21: FILE STRUCTURE
PAGE 22: DISPLAY PROBLEMS
Press ESCAPE to exit Help.
================================================================
OPTIMAX Page 10
Version 2.2
(C) COPYRIGHT 1992 by Max E. Klinger
All Rights Reserved
Program written by Max E. Klinger
NOTICE: This product is copyrighted and is not public
domain software.
If you would like to contact the author with questions or
comments about the program, write:
Max E. Klinger
3142 Folsom Street
Boulder, CO 80304
Page 11
This program consists of five files:
OPTIMAX.EXE
OPTIMAX.WKB (Data file)
OPTIMAX4.HLP
OPTIMAX.DOC (Copy of these Help Screens)
OPTIMAX.TXT (Detailed text and manual)
To print the documentation, for example from a floppy in the
A: drive, enter at a system prompt: "TYPE A:OPTIMAX.DOC >PRN"
and then press [ENTER]. To print the detailed text and
manual, for example from a hard drive labeled "C," enter at
the system prompt: 'TYPE C:\OPTIMAX.TXT >PRN" and then press
[ENTER].
================================================================
Page 12
Instructions for Using OPTIMAX
This program is a compiled spreadsheet with two different
command systems. Most basic functions in the program can be
performed with one of three commands.
ALT-M invokes a menu system that controls most of
the program features.
ALT-C when in the Automatic diagonal calculation
screen, after entry of the data, will
calculate the diagonal size.
ALT-D when in the Manual diagonal calculation
screen, after entry of the data, will
determine the results of the diagonal
entered.
Page 13
OPERATION OF THE PROGRAM
Basic operation of the program consists of four different
components.
1. Eyepiece and Image Size Chart
2. Diagonal Size Chart (Automatic Mode)
3. Chart Showing Relative Area of Diagonals
4. Diagonal Size Chart (Manual Mode)
Component # 4 is an alternative to ## 2 & 3.
1. Eyepiece and Image Size Chart
This chart will determine the four characteristics of
eyepiece performance shown in the four columns on the right side
of the screen for up to 17 different eyepieces. To use, merely
[Press Page Down for continuation]
================================================================== Page 14
insert the size of the objective mirror (in inches) and the
focal ratio at the top of the chart and the focal length and
apparent field size for each eyepiece in the two left columns.
When this data has been entered, entering the information
called for in the first two columns on any line will
cause the characteristics in the last four columns to be
calculated automatically.
2. Diagonal Size Chart (Automatic Mode)
In this mode, the program will make a series of
determinations about the optimum diagonal size as well as about
the performance of various readily available commercial
diagonals. To use this feature, enter the objective mirror size
in inches, focal ratio, desired linear image size in inches, and
the desired distance from the center of the diagonal (optical
axis) to the focal plane (in inches). Then press ALT-C.
Page 15
The method of calculating the diagonal size is based upon
the method described by William Peters and Robert Pike in "Sky &
Telescope," March 1977 p. 220. Under this method, the "%
Illumination" represents the amount of vignetting at the edge of
the field as a percentage of full illumination. When this
percentage is 63%, it represents a .5 magnitude light loss at
the edge of the field, which is usually unnoticeable for
most purposes under the Peters-Pike method. An asterisk in the
column marked "Unsuitable Diag." means that the diagonal size
shown is smaller than the theoretical minimum size diagonal.
For diagonal sizes or F/ ratios that are at the extremes
for a given configuration, the formulas used for these
calculations to become indeterminate. This has several
consequences. For extreme F/ ratios (e.g., smaller than F/3 or
larger than F/12) with small mirrors, the formulas may produce
[Page Down to Continue]
================================================================== Page 16
odd results. Similarly, for diagonal sizes that are much
larger or smaller than the optimum size, the results may
occasionally be spurious. None of these problems arises
with reasonable and usual F/ ratios and diagonal sizes.
When the results for a given diagonal size appear as
"Indeterminate -- Indeterminate" this indicates a diagonal
size that is smaller than the optimum size, and the formulas
indicate that the % of Illumination is negligible while the
magnitude loss becomes extreme.
For comparison purposes, the diagonal size determined under
a more traditional formula can be determined on the screen
for MANUAL DETERMINATION of the diagonal size. After pressing
ALT-M, select "M" or "Manual Diagonal."
Page 17
3. Chart Showing Relative Area of Diagonals
After using part 2, go to the Chart in Part 3. This will
show, for the diagonals determined in Part 2, the relative area
of each diagonal in relation to the size of the objective mirror
Optimally, a diagonal larger than about 5-6% of the area of the
objective mirror may increase diffraction and cause a loss of
contrast.
==================================================================
Page 18
4. Diagonal Size Chart (Manual Mode)
This part allows the manual determination of the
performance of a given diagonal size or a manual search for the
optimum diagonal size. To use this feature, enter the objective
mirror size in inches, focal ratio, desired linear image size in
inches and the desired distance from the center of the diagonal
(optical axis) to the focal plane (in inches). Then enter a
diagonal size in the space shown. Press ALT-D and the program
will display the results.
The percentage illumination and magnitude loss (as
explained above) as well as the relative area of the selected
diagonal are shown. To determine manually the optimum diagonal
size under the Peters-Pike method mentioned above, keep
substituting different diagonal sizes (each time pressing ALT-D)
until the magnitude loss equals .5.
Page 19
The warning that a diagonal is "too small" means that
the diagonal size entered is smaller than the theoretical
minimum diagonal, without regard to considerations of
vignetting. Under no circumstances would such a diagonal
be suitable, no matter what size magnitude loss is
shown.
The listing for Diagonal Size (Traditional) shows
the diagonal size determined under one of the traditional
methods, here using the formulas developed by Ralph Dakin.
In using this chart, it is important to remember the
limitations imposed by the mathematics used for these
calculations. See Pages 15-16 above.
==================================================================
Page 20
"SLASH" COMMANDS
To invoke the menus and options indicated across the
top of the screen, press the Forward Slash key [/].
Then select the desired item from the list. While
using these "slash" commands will give you greater control
over the program, it is not necessary to use any of these
commands in order to take advantage of the features of the
program.
These "slash" commands are similar to those used in
LOTUS 1-2-3, but not all of the features listed in the
menus will be available in this program. These commands
can be used, for example, to control printer settings, such
as margins and the like. DO NOT attempt to add or delete
rows or columns or otherwise to change the basic layout of
the charts. The program may freeze if these are attempted.
[Page Down to Continue]
Page 21
FILE STRUCTURE
You may save the data you have entered into the program in
a data file (with .WKB extension) by entering a new file name
when prompted by the "save" menu option or when you press
/fs. These data files can be reloaded into the program by
using the "file get" [/fg] commands under the File menu.
To clear all data from the program, press slash (/) then
select "worksheet" and "erase" from the menus. Answer "yes"
when prompted. Then press F-9 to clear the screen. All data
will be cleared and lost, unless you have first saved it in
a new data file.
================================================================== Page 22
DISPLAY PROBLEMS
If your monitor is not displaying the program correctly,
try selecting the video option after pressing the forward slash
[/]. From this menu you may select from one of three different
display modes, i.e., color, black & white, monochrome, and to
change the size of the display.
Press [Page Up] to reread the Help Screens
Press [Escape] to exit from Help
[ END OF HELP PAGES ]