Magna Calc 4+

Name: Magna Calc
Price: 0.99 USD
Rating: 1.5 (2 reviews)
Author: Greg Paskal

Greg Paskal

Designed for iPhone

- 1.5 • 2 Ratings

- $0.99

iPhone Screenshots

Description

Great for amateur astronomers.

Astronomers often need to calculate the magnification derived from their telescope focal length and eyepiece. MagnaCalc provides an easy way to calculate this value for both amateur and professional astronomers.

Additionally, Magna Calc provides a 2x to 5x Barlow lens option.

Whether you're an amateur or professional astronomer, you'll find Magna Calc helpful in your everyday passion for astronomy.

Magna Calc Features...

- Telescope Focal Length (in Millimeters)
- Eyepiece Focal Length (in Millimeters)
- Barlow Lens Option (1x, thru 5x)
- Magnification Calculation

Jul 14, 2025

Version 2.3

Redeveloped from scratch with added barlow lens settings.

1.5 out of 5

2 Ratings

Not really happy with it

Its simple and the key pad is a good idea. But this calculator requires you know your f ratio in millimeters. I can figure that out, but I think a good calculator should not require you provide some of the calculating yourself. Any scope owner would know their mirror size in inches and focal length f ratio, calculating from those figures would be more useful.

Terrible

Don't waste your dollar. If you've updated your phone since 2011, then the app will not even open. Shame on the developer for not keeping the app updated, and shame on Apple for not removing the app from the App Store. If I could I'd rate this app -5 stars.

The developer, Greg Paskal, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.