Catalogue
and alternative designations |
Trifid
Nebula, M20, NGC 6514
|
Type |
Emission
and Reflection nebulosity |
Position |
18
02 25, -22 59 00 |
Constellation |
Sagittarius |
Camera
and Telescope |
STXL6303
and 36.8cm Ritchey Chretien |
Focal
Ratio |
F9 |
Exposure
Details |
LRGB
with special purpose Astrodon
infrared filters. L is
"infrared luminance"
which excludes anything less
than 700nm. Red
is assigned to a band peaking at
about 850nm, Green peaking at
about 830nm and Blue at
750nm. Exposure times were
L = 75 minutes (unbinned) and R
= G = B = 50 minutes (binned
2x2)
|
Description |
The
Trifid nebula is one of the best
known deep sky objects in the
sky. This near infrared
image shows many stars that are
obscured in visible light shots
and also indications of other
structures.
|