Sight Calc 2.0
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Paid Version
Publisher Description
Speed through the tedious and error-prone calculations of your Celestial Navigation course with Sight Calc v.2.0! Approved for use in U.S. Power Squadrons® courses.
Sight Calc is a specialized calculator for calculating sight reductions via the "Law of Cosines" method. It does not use Nautical Almanac data, so you must first compute LHA (Local Hour Angle) and declination, and determine your approximate latitude. It is designed particularly for students learning celestial navigation, such as the Celestial Navigation courses taught by the United States Power Squadrons®. If you are unfamiliar with how to do sight reductions, some good resources are available from the United States Power Squadrons® at www.usps.org. In particular, this calculator is useful in conjunction with Form SR96a, www.usps.org/eddept/n/files/sr96a.pdf
Inputs may be entered as two numbers:
Degrees - left column
Minutes - right column
Or enter as decimal degrees (e.g., 44.48833).
Sight Calc will prompt you to enter six number in sequence:
LHA (degrees)
LHA (minutes)
Lat (degrees)
Lat (minutes)
Dec (degrees)
Dec (minutes)
In v 2.0 you may enter values in any sequence. Hc, Z and Zn are continuously computed and displayed.
Be sure to enter North Latitude as a positive number and South Latitude as a NEGATIVE number. Sight Calc will take the absolute value of Latitude in the law of cosines formula, but needs the hemisphere to calculate azimuth (Zn). Similarly, enter Declination as positive if North and negative if South. (Note: this differs from version 1.x of Sight Calc.)
If you want to do repeated calculations with some of the same numbers, just enter the changed numbers.
To start over fresh at any time, press "C" to clear everything. "CE" key clears the Current Entry. Optionally, use the "o" key to convert minutes to decimal degrees, add that to the degrees field, and clear the minutes field. This has no effect on the calculation.
Please report any bugs or suggestions to:
sightcalc@nuvocom.com
Jan 31, 2024
Version 2.0
• Simpler, more flexible user interface
• Fields can be entered in any sequence
• Declination entered as negative if South, positive if North
• New ° key converts minutes to degrees
• Minus key flips the sign of degrees fields
• Approved for use in United States Power Squadrons® courses
• v 2.0 is a complete rewrite in SwiftUI
• Supports Dark Mode
About Sight Calc
Sight Calc is a paid app for iOS published in the Recreation list of apps, part of Home & Hobby.
The company that develops Sight Calc is NUVOCOM INCORPORATED. The latest version released by its developer is 2.0.
To install Sight Calc on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2024-01-31 and was downloaded 5 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Sight Calc as malware if the download link is broken.
How to install Sight Calc on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the Sight Calc is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After Sight Calc is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
