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| Catalogue and alternative designations | GGD 27 |
| Type | Reflection nebula |
| 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 = 200 minutes (unbinned) and R = G = 100 minutes, B=130 minutes (binned 2x2) |
| Description | GGD 27 is a complex star forming region about 5,500 light years away in Sagittarius that has been much studied. The central part of the nebula is dominated by a massive protostar now designated GGD 27-ILL. |