EMISSION NEBULA IC410, STAR CLUSTER NGC 1893, AND "THE TADPOLES"
HaRGB image taken from the backyard (click on image for larger size):
Image acquisition and processing details:
| Telescope: | William Optics Zenithstar 105mm APO refractor, f/5.6 with 0.8 FR/FF. |
| Mount: | Celestron CGE, remotely controlled with NexRemote and TheSky Professional. |
| Camera: | SBIG ST-10XME cooled to -25C, internal guiding. All images binned 1x1. |
| Filters, Exposure Times: | AstroDon Hydrogen-Alpha 320 min (32x10 min), Red 150 min (15x10 min), Green 100 min (10x10 min), Blue 180 min (18x10 min). Additional data was obtained but discarded. |
| Dates (Universal Coordinated Time): | 18/19/20/21-Oct-2007 |
| Moon Phase: | 49% - 79% |
| Location: | Xanadu Observatory, poolside |
| Software: | CCDAutopilot, MaximDL, TheSky, FocusMax, PinPoint, CCDInspector, CCDStack, Adobe Photoshop |
| Notes: | Notice the 2 small "tadpole" structures within the nebula, near the middle of this image. These are areas of cool, dense gas and are roughly 10 light-years long, and have been formed by radiative pressure from the stars in the cluster. |