NINA Log analyzer

For astrophotographers who rely on automation to capture images overnight, it’s common to wake up with either hundreds of sub-exposures or a disappointing trickle of data. This unpredictability is exactly what led astrophotographer Brian Carter to develop a free online tool called the NINA Log Analyzer, which transforms the dense, hard-to-read logs from the NINA sequencing software into visual summaries that help users diagnose what went wrong, and what could go better.

NINA Log analyzer: Optimize your imaging time

NINA (Nighttime Imaging ‘N’ Astronomy) is a powerful astrophotography suite that controls sequencing, focusing, slewing, and image capture. But when things go awry during a night’s session, the only record of what happened is stored in its verbose log files. These logs contain everything from autofocus triggers to dithering pauses, but sifting through them manually is time-consuming and highly inefficient.

Carter, like many other NINA users, often sets up imaging runs before bedtime and doesn’t interact with the setup again until morning. When problems occur, like a power cable coming loose at 2:00 AM, the logs are technically informative but practically useless without the right tool to interpret them.

The NINA Log Analyzer is a browser-based tool that provides a clean, structured view of what your telescope was doing all night. Users can simply upload their log files, and the app will generate a Gantt-style timeline that maps out every major sequencing event throughout the session.

This timeline allows astrophotographers to immediately identify downtime, inefficiencies, and recurring issues. Events such as exposures, target acquisition, meridian flips, autofocus runs, and filter changes are visually separated so users can get a quick overview of how their system performed.

Carter designed the tool to reduce log clutter and focus only on meaningful events. Several categories are automatically grouped to simplify the output:

• Meridian Flip Activities - All tasks performed during a meridian flip (focusing, slewing, centering, etc.) are combined into one block.
• Target Acquisition Tasks - Slewing, rotating, and centering are grouped together, whether or not a rotator is used.
• Zero-Duration Events - Events that register with no actual duration are omitted from the display to avoid unnecessary noise.
   

This consolidation creates a more digestible chart that emphasizes time spent capturing data versus time spent on transitions, adjustments, or unintended idle states.

One of the core values of the NINA Log Analyzer is its ability to help users reclaim wasted imaging time. In Carter’s case, a review of his logs revealed that although filter changes only took about two seconds each, performing hundreds of LRGB exposures per night added up to a surprising chunk of time. By tweaking his sequence setup, he was able to reduce the number of filter swaps and reclaim 15 minutes of otherwise lost exposure time.

The analyzer is a lightweight web app that requires no installation, registration, or login. It doesn’t store user data or keep any uploaded logs, which makes it appealing for privacy-conscious users who don’t want their astrophotography sessions exposed to third-party tools or cloud analytics.

Additionally, Carter is considering future enhancements, such as integrating subframe analysis and per-exposure stats, though he notes that it would require users to upload more data, something he’s currently trying to avoid to maintain the tool’s simplicity.

This project was developed with community feedback in mind. Carter has encouraged testers to try it out and report bugs or suggestions. As it stands, it’s a clean, effective tool that serves one purpose very well, helping astrophotographers get more out of their imaging time by learning from what happened overnight.

NINA Log Analyzer specifications

• Software Name: NINA Log Analyzer
• Developer: Brian Carter
• Platform: Web-based, no installation required
• Usage: Upload NINA log files directly in browser
• Output: Gantt-style event timeline
• Event Categories Visualized:
• Sub Exposures
• Target Slew/Center/Rotate
• Autofocus
• Dithering
• Meridian Flip
• Flat Frame Capture
• File Handling: No logs stored, full user privacy
• Future Features (Planned): Optional sub-exposure stats if users opt to upload additional files

 

NINA imaging analysis

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