| Nebular Component |
Type of Observation |
Instrument |
Wavelength Coverage |
Field Size |
Angular Resolution |
Velocity Sampling |
| Dust Grains |
Scattered Light Surface Photometry |
WISPa |
1400-1900 & 1900-2500 Å |
5.0 x 1.7 degrees |
30'' pixels, 2.5' PSF |
N/A |
| Burrell Schmidt |
3600-5200 Å |
WISP field mosaic (40 1.1 degree fields) |
4'' pixels (binned) |
| Thermal Radiation Surface Photometry |
IRASb |
60 & 100 µm |
All-Sky Survey data base |
5' PSF |
| DIRBEc |
60, 100, 140 & 240 µm |
0.7 degree field of view |
| Neutral Atomic Gas |
Single Dish Mapping Emission Spectroscopy |
Green Bank 140-ft. |
H I 21cm line |
171 square degree mosaic (6151 pointings) |
21' beam |
0.52 km/s channels |
| Array Mapping Emission Spectroscopy |
Very Large Array D-configuration |
2 x 2 degree mosaic (64 fields) |
1' beam |
1.3 km/s channels |
| Optical Absorption Point Spectroscopy |
Coudé Feed Echelle |
Na I D 5890 & 5896 Å lines |
48 sightlines over an 8 x 7 degree area |
< 0.002'' (stellar disk) |