FIT File Extension

What is FIT file?

A .FIT file format is used to store astronomical related data that is captured through telescope for research and scientific purpose.  The FIT file format is a standard format that is used for scientific imaging and approved by both NASA and International Astronomical Union (IAU). The FIT data is saved in binary or ASCII format as separate datasets, which can be further processed with digital processing applications to deliver a standard image.

Programs which support FIT file extension

Programs that can handle FIT files are as follows. Files with FIT suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Updated: 11/13/2019

How to open file with FIT extension?

Problems with accessing FIT may be due to various reasons. Fortunately, most common problems with FIT files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with FIT files.

Step 1. Get the AVIS - FITS Viewer

Problems with opening and working with FIT files are most probably having to do with no proper software compatible with FIT files being present on your machine. This issue can be addressed by downloading and installing AVIS - FITS Viewer or different compatible program, such as XnView. The full list of programs grouped by operating systems can be found above. One of the most risk-free method of downloading software is using links provided by official distributors. Visit AVIS - FITS Viewer website and download the installer.

Step 2. Verify the you have the latest version of AVIS - FITS Viewer

You still cannot access FIT files although AVIS - FITS Viewer is installed on your system? Make sure that the software is up to date. Software developers may implement support for more modern file formats in updated versions of their products. This can be one of the causes why FIT files are not compatible with AVIS - FITS Viewer. The latest version of AVIS - FITS Viewer should support all file formats that where compatible with older versions of the software.

Step 3. Assign AVIS - FITS Viewer to FIT files

If you have the latest version of AVIS - FITS Viewer installed and the problem persists, select it as the default program to be used to manage FIT on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Change the default application in Windows

• Right-click the FIT file and choose Open with option
• Select Choose another app → More apps
• The last step is to select Look for another app on this PC option supply the directory path to the folder where AVIS - FITS Viewer is installed. Now all that is left is to confirm your choice by selecting Always use this app to open FIT files and clicking OK.

Change the default application in Mac OS

• By clicking right mouse button on the selected FIT file open the file menu and choose Information
• Find the Open with option – click the title if its hidden
• Select AVIS - FITS Viewer and click Change for all...
• If you followed the previous steps a message should appear: This change will be applied to all files with FIT extension. Next, click the Continue button to finalize the process.

Step 4. Verify that the FIT is not faulty

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the FIT file in question. Being unable to access the file can be related to various issues.

1. Check the FIT file for viruses or malware

If the FIT is indeed infected, it is possible that the malware is blocking it from opening. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. FIT file is infected with malware? Follow the steps suggested by your antivirus software.

2. Verify that the FIT file’s structure is intact

If you obtained the problematic FIT file from a third party, ask them to supply you with another copy. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. When downloading the file with FIT extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Ensure that you have appropriate access rights

Sometimes in order to access files user need to have administrative privileges. Log in using an administrative account and see If this solves the problem.

4. Verify that your device fulfills the requirements to be able to open AVIS - FITS Viewer

If the system is under havy load, it may not be able to handle the program that you use to open files with FIT extension. In this case close the other applications.

5. Verify that your operating system and drivers are up to date

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Flexible Image Transport System Format files. It is possible that one of the available system or driver updates may solve the problems with FIT files affecting older versions of given software.

Do you want to help?

If you have additional information about the FIT file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on FIT file.