|
Object |
M20-
The Hour Glass/ Trifid Nebula |
|
Info |
M20 Nebula-
is
located in the constellation Sagittarius. It is a
cloud of dust and gas where stars are forming. The red
portion of this complex is light from new born stars
that make the hydrogen gas glow. The blue area is caused by star light
reflected from dust grains. The double star to
the centre of the nebula, HN 40
excites
the HII area.
It is approximately 5,200 L.y. away. |
|
Date |
Lum-17/ 5/
07 &18/6/07 and RGB data
19/ 6/ 07 |
|
Location |
BayTop
Observatory- Streaky Bay South Australia |
|
Instrument |
Home built 10" Newtonian (Bob
Royce primary) and an Antares 1/20th wave
secondary with MPCC
coma corrector. System working
@ native f4/
1016 FL 1.35 arcsec/pixel- FOV
23.3x29.4 |
|
Mount |
Celestron CI700 controlled by a Mel
Bartels Goto Control System
with Vexta PK264m-01b motors with a pulley and belt system |
|
Camera (CCD) |
Starlight
Xpress HX916 monochrome CCD with Atik manual
filter wheel. |
|
Exposures |
L: 33' R:12' G:12' B:12'
[1' sub exposures all unbinned] No dark frames removed.
|
|
Guiding |
Orion
80ED refractor F7.5 with a Starlight Xpress HX516 CCD.
Mounted via a side by side accessory plate. |
|
Filters |
Astronomik
typeII clr RGB filter set |
|
Notes/ Conditions |
Conditions- Taking the Lum on the 17th of May the seeing
was a little average but the transparency was
excellent. Very similar conditions when adding to the lum on the 18th of
June. Average FWHM 1.2 (2xs binned). Taking the colour channels conditions
were quite poor due to the low altitude when beginning the run. Was trying
to beat the clouds that didn't come :)... This was the first real test run
with my new improved composite tube and other mods. |
