 |
| Click on image for large
version |
| Subject |
M17 |
| Date |
6th June 2005 |
| Telescope
or Lens |
TEC APO 140 with AP 0.75 focal reducer |
| Mount
|
Paramount ME |
| Camera |
ST2000XM |
| Filters |
Schuler 10nm Ha, TT RGB |
| Total Exposures |
L |
120 min |
R |
60 min |
G |
60 min |
B |
60 min |
| Sub exposure |
6 x 20 min |
6 x 10min |
6 x 10 min |
6 x 10 min |
| Binning |
1x1 |
| Field
of view and resolution |
Approx 58 x 43 Arcminute. 2.18 Arcsec
/ Pixel |
|
| Comments |
|
| It has taken me a
long time to get an image of M17. This nebula is only available to my observatory
around June and July due to its low position and my topography. Even then
I can only image it successfully for just under 90 minutes. During the image
gathering I was dogged by poor seeing as it is literally skimming the top
of my garage, which takes time to cool. The RGB was gathered during June
2005 over five nights, while the Ha used as luminance is from June 2004.
I failed to get enough good weather at the right time last year to get the
colour. There is some slight deformation in the stars but not enough to
worry about. At least I got it this time round. |
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