# FAQ

Frequently Asked Questions

# Questions

## General

1. What's Munipack?
2. What's the license of Munipack?

## FITS Format

1. What's FITS format ?
2. Why FITS, why not xxx JPG, PNG, etc.. ?
3. My frames has set the keyword XXX (for temperature, object identification,...) and seems to by unused by Munipack.

# Answers

## General

1. #### What's Munipack?

   Munipack is a general astronomical image processing software.

   Munipack is primary intended for any astronomical image processing.

2. #### What's the license of Munipack?

   Munipack is licensed under GPL version 3. This mean it is freely for any usage, modifications, redistributions etc.

## FITS Format

1. #### What's FITS format ?

   FITS (Flexible Image Transfer System) is a computer format intended to store astronomical data for simple and powefull data interchange. FITS has been initially used for radiotelescope data.

   See also: The FITS Support Office, FITS on Wikipedia.

2. #### Why FITS, why not JPEG, PNG, etc.. ?

   FITS offers such properties which are absolutelly necessory to store any raw (measured) data. While JPEG or PNG formats are primary intended for simple and flexible image storage and displaying.

   FITS has important advantages over usual computer data formats:

   - Sophisticated method for storing numerical data types.
   - Sophisticated store of optional parameters in headers.
   - Support for 4 and 8-bit integers as well as floats.
   - Multi-parts images (one file can contains more images/tables).
   - Tables can be stored as well as.

3. #### Different keywords

   See man_env.html to set the right name. (dodelat!!)