Visual review of flying objects

Sometimes there may be doubts about the validity of a meteor, for which it is very useful to be able to review the original image in which the flying object was captured, as well as the adjacent images.

Well, as you can see below, these review tasks can be done in Nebulb in a very simple, fast and effective way:

Review of the original image of a flying object

The most convenient and quickest way to check any meteor (or flying object in general) is as follows:

1. Select the "rectangle" mode of representation together with the "real image" mode.

In order to be able to review the meteors in case of doubt, it is best to first enable the "rectangle" mode of representation together with the "real image" mode (in order to be able to see the fusion of the real image of the meteor framed by the rectangle, as this facilitates its later selection and review).

2. Manually select the meteor to be reviewed.

To manually select a meteor: (1) click on the hand button and (2) select the desired meteor with the mouse.

3. Select the alignment according to the image.

By selecting the alignment according to the image the selected meteor (yellow arrow) is placed in the exact position it is in the image in which it was captured.

4. Zoom in on the meteor for a better view.

Right-click on the meteor to enlarge the image and get a better view of the meteor.

5. Click on the image review button (or press "Ctrl + R").

By pressing the review button (red arrow) the original image of the last selected flying object is displayed on the screen, confirming in this case that the flying object is definitely a meteor (by its color). In this way, it is very easy to check any meteor in case of doubt.

Review of the images close to the original image of a flying object

Occasionally there may be some doubt as to whether a potential meteor may actually be a satellite. In such cases, in addition to reviewing the image, it is also possible to perform a second check in order to try to definitively resolve the doubts.

The most effective method to verify whether a doubtful meteor may actually be a satellite is to visually check the images before and after the image in which the meteor was captured. In this way, it is possible to visually check if there is any trail (even if very faint) following the direction of the suspected meteor in any of the adjacent images, which would confirm that the meteor is indeed a satellite.

In Nebulb it is very easy to do this verification by following these steps:

1. Select the doubtful meteor.

During stacking Nebulb performs an automatic classification of the meteors according to the main radiant detected. However, there is some meteor in the central area that, although its direction passes through the radiant area, seems to be a little bit off, so it could actually be a satellite. To select the flying object you want to check, you have to: (1) click the hand button and (2) select the desired flying object with the mouse.

2. Select the "rectangle" mode of representation.

The "rectangle" mode of representation is selected to make it easier to visually check the flying object later on.

3. Select the alignment according to the image.

When selecting the alignment according to the image the flying objects are rendered in the image position in which they were captured. Note in this case how the position of the selected meteor has changed (white rectangle).

4. Zoom in on the selected flying object.

Right-clicking on the selected meteor zooms the image to view that region in more detail.

5. Click on the original image review button (or press "Ctrl+R").

By clicking the review button (red arrow) Nebulb displays the original image in which the selected meteor was captured. And by doing so you can see the faint trail of light from this flying object.

6. Press the left cursor key (◀) or the right cursor key (▶) to display the image before or after the current one. That is, by using the cursor left/right keys you can go through the images close to the image in which the meteor was captured and, thus, verify if that flying object is really a satellite.

Pressing the left cursor (◀) displays the previous image on the screen and, in this case, there is a faint trail in the same direction as the supposed meteor. Therefore, this meteor is actually a satellite.

And in case you press the right cursor (▶) the following image is loaded and you can also see in this case a slight trail, confirming this without any doubt that it is a satellite.

IMPORTANT 1: The cursors can be pressed several times (either left or right) to display as many adjacent images as desired.

IMPORTANT 2: In the case where, as in this example, it is confirmed that the doubtful meteor is in fact a satellite, simply click on the "manual classification as satellite" button to have it classified correctly.

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