Planetary Nebula Classification & Representative Images

Page 2

This page displays a number of thumbnail images of pn's that are representative of various sub-type pn forms and structures as discussed on the previous page. Again, these images are DSS downloads and are modified to show a negative image. Click on the thumbnail image for a larger image (300 x 300).
 
 Vorontsov-Velyaminov PN Types:
1. Stellar Image
2. Smooth Disk
    a. brighter towards center
    b. uniform brightness
    c. traces of ring structure
3. Irregular Disk
    a. very irregular brightness distribution
    b. traces of ring structure
4. Ring Structure
5. Irregular Form (similar to a diffuse nebula)
6. Anomalous Form
 
 

Type 2+2

IC4593

Hercules

Type 2+2a

IC3568

Cepheus

Type 2+3

NGC 6886

Sagitta

Type 2+3b

NGC 6210

Hercules

Type 2a+2b

NGC 6891

Delphinus

Type 2a+3

IC 4634

Ophiu- phus