| Catalogue and alternative designations |
IC 4406, Retina nebula |
| Type | Planetary Nebula |
| Position | 14 22.4, -44 09 |
| Constellation | Lupus |
| Camera and Telescope | STL6303E and 36.8 cm Ritchey Chretien (visible shot). The infrared used a STXL6303 camera. |
| Focal Ratio | F9 |
| Exposure Details | For visible (left) LRGB 70:40:40:40 Luminance 1x1, Colours 2x2 with Astrodon series 2 filters (visible and near infrared). For near infrared (right) LRGB 160:80:120:90. Red is assigned to a band peaking at 850nm, green 830nm and blue 750nm. The infrared luminance filter blocks all wavelengths shorter than 700nm. Both images are full resolution. |
| Description | This
planetary nebula is relatively
bright at magnitude 10.2 and
quite easy visually. It is
about 1.7 x 0.6' in size and is
sometimes known as the Retina
nebula because of its
resemblance to images of the
retina in the human eye.
The central star which is
visible in this image is
magnitude 14.7. Click here
for the latest Hubble view (not
LRGB)
|