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Re: Longhand Sight Reduction
From: Hanno Ix
Date: 2014 Jun 16, 16:07 -0700
From: Hanno Ix
Date: 2014 Jun 16, 16:07 -0700
Greg,
aha! Very nice, designed for readability. And lots of unused space.The one I was talking about was designed for compactness.
See first attachment. I talked about it before. For a physical demonstration of compactness see second attachment. There are other features of this table
that make it compare well with the sin() | cos() ruler design you sent.
Yes, and there are downsides.
See first attachment. I talked about it before. For a physical demonstration of compactness see second attachment. There are other features of this table
that make it compare well with the sin() | cos() ruler design you sent.
Yes, and there are downsides.
Re: this table
PLUS:
- high density, 2 pages only
- 4 digits for all listed angles.
- 4 digits for all listed sin() | cos().
- separate fonts for angles and cos() | sin(), avoids confusion
- Calculations in sexagesimal format ( XXdeg , xx arcmin) eliminated
MINUS:
- Angles in multiples of 2 arcmin only.
- Conversion by user required - no matter how easy,
- Dense. Can be confusing.
- Small font.
We are used to small fonts. They commonly appear on slide rules and in other tables.
The 2 arc min step size is a compromise. However, since interpolation by division by 2
is such a simple operation I thought this choice was acceptable. Try it, and you will agree.
My ultimate goal is the "Zen" version of sight reduction.
My ultimate goal is the "Zen" version of sight reduction.
Hanno
On Mon, Jun 16, 2014 at 2:11 PM, Greg Rudzinski <NoReply_Rudzinski@fer3.com> wrote:
Hanno,
Here is the 9°/80° of tables
http://fer3.com/arc/m2.aspx/Longhand-Sight-Reduction-HannoIx-jun-2014-g28046
Attached File:
(Trig-Table-9-80-Degrees.jpg: Open and save)
File:
File:
