This page (revision-57) was last changed on 07-Dec-2016 14:14 by David R Williams

This page was created on 09-Jul-2008 07:16 by David R Williams

Only authorized users are allowed to rename pages.

Only authorized users are allowed to delete pages.

Page revision history

Version Date Modified Size Author Changes ... Change note
57 07-Dec-2016 14:14 17 KB David R Williams to previous
56 15-Jul-2008 13:54 17 KB David R Williams to previous | to last
55 15-Jul-2008 13:27 16 KB David R Williams to previous | to last
54 15-Jul-2008 13:19 16 KB David R Williams to previous | to last
53 15-Jul-2008 13:19 16 KB David R Williams to previous | to last
52 15-Jul-2008 13:18 16 KB David R Williams to previous | to last
51 15-Jul-2008 13:18 16 KB David R Williams to previous | to last
50 15-Jul-2008 13:14 16 KB David R Williams to previous | to last
49 15-Jul-2008 11:43 14 KB David R Williams to previous | to last
48 15-Jul-2008 10:05 14 KB David R Williams to previous | to last
47 15-Jul-2008 10:02 14 KB David R Williams to previous | to last
46 15-Jul-2008 09:53 14 KB David R Williams to previous | to last
45 15-Jul-2008 09:39 14 KB David R Williams to previous | to last
44 15-Jul-2008 09:36 13 KB David R Williams to previous | to last
43 15-Jul-2008 09:23 13 KB David R Williams to previous | to last
42 15-Jul-2008 09:06 13 KB David R Williams to previous | to last
41 15-Jul-2008 08:19 12 KB David R Williams to previous | to last

Page References

Incoming links Outgoing links
EisXstudy
EisXstudy

Version management

Difference between version and

At line 1 removed 2 lines
[{ALLOW edit EISMainUsers}]
[{ALLOW view Anonymous}]
At line 202 removed 3 lines
\\
\\
----
At line 201 added one line
At line 207 changed one line
The most critical part of the raster description that __isn't__ summarised in the ''Raster Title'' is the Line List. This is because the line list is too variable to easily summarised. So, it gets its own panel in the raster description.
The most critical part of the raster description that ''isn't'' summarised in the ''Raster Title'' is the Line List. This is because the line list is too variable to easily summarised. So, it gets its own panel in the raster description.\\
At line 209 removed 3 lines
Note that, like studies and rasters, line lists have and ID and acronym.
\\
At line 221 changed one line
You'll see that, like the raster, a Line List has a one-line so-called ''Title'' string associated with it. Since this is truncated, it doesn't serve much purpose, and we'll skip it here.
You'll see that, like the raster, a Lin
At line 225 removed 2 lines
Again, fairly self-explanatory\\
:-)
At line 228 removed one line
One point to perhaps reiterate, though, is that you can use a line list created by anyone else in your study. All line lists, rasters, and studies in the OSDB are there to be re-used and cannibalised by anyone wanting to propose an observation.
At line 230 removed one line
At line 232 removed one line
There can be up to 25 spectral windows in a line list, but the minimum is normally three: the core lines. The core lines are
At line 234 removed 4 lines
||Ion||Wavelength (Å)
|Fe XII |195.12
|Ca XVII|192.82
|He II |256.32
At line 239 removed one line
At line 241 changed one line
Each spectral window can have a width that is an integer multiple of 8, from 8 to 1024 (half a CCD width), and there can be up to 25 windows, each with independent widths. In the example image above, you can see that most windows have a width of 24 pixels (a little over 0.5 Å), which is usually adequate. But a few windows are wider (32, 40 or 48 pixels). Wider windows often (but don't necessarily) indicate that the line list author was trying to capture other lines by using a wider spectral window.
Each spectral window can have a width that is an integer multiple of 8, from 8 to 1024 (half a CCD width), and there can be up to 25 windows, each with independent widths. In the example image above, you can see that most windows have a width of 24 pixels (a little over 0.5 Å), which is usually adequate. But a few windows,
At line 243 removed 2 lines
This also helps to explain why the core lines of {{Fe XII}} (195.12 Å) and {{Ca XVII}} (192.82 Å) aren't explicitly included in this line list: they are already covered by the {{Fe XII}} window at 194.91 Å and the {{O V}} window at 192.84 Å, respectively.
This page (revision-57) was last changed on 07-Dec-2016 14:14 by David R WilliamsTop