Assess the image quality

After processing and alignment, review your images for quality (clouds, satellite trails, fogging, etc.).

1. Select the first image in the Image Manager.
   
   
   
2. Open Action → View Images (or press F3).
   
3. The Image Viewer opens with the image loaded.
   
   

Tips:

• Zoom out to see the entire field of view.
  
• Scroll through images by selecting them in the Image Manager.
  
• To flag bad images:
  Right-click the image in the Image Manager → Flag for Removal.

Examples of bad images:


Figures: Camera fogging (left), passing cirrus clouds (middle) and Artificial satellites (right)

Remove flagged images:

1. Close the Image Viewer.
   
2. In the Image Manager, go to List → Reset.
   
3. Then go to List → Remove Flagged.
   
4. Flagged images will be removed from the active list.
   

Stacking the images

Attach Comet Ephemeris

1. In the Image Manager, go to Ephemeris → Attach from JPL Horizons.
   
2. In the JPL Horizons interface:
   •    Set Lookup Type = Asteroid or Comet Name.
   •    Enter the comet’s name in the Target ID field.
   •    Click Check Object. 
   
   
   Example Output:
   

   [2025/09/06 15:54:35]: Ready.

3. Go to Ephemeris → Attach to Dataset.
4. The ephemeris data is now added to the dataset in the Image Manager.
   
   

Stack the Images

1. Select all images in the Image Manager.
   
2. Press F3 (or go to Actions → View Images).
   
3. In the Image Viewer, enable Dynamic Stacking and select Average as the stacking mode.