Star Cluster - Messier 7 (NGC6475)
| Image Details | 20070831 Messier 7 (NGC6475). |
| Telescope |
Observatory mounted 12-inch f/5 Newtonian telescope
on Losmandy Gemini G-11 equatorial mount and custom pier. |
| Guiding | Autoguided with SBIG 402 on 4.5-inch f/9 guidescope using CCDSoft. |
| Camera |
Canon EOS 300D Digital ( Hα enabled ) focused with DSLR Focus. |
| Exposures | 20-minute exposure (4 x 5 min. sub-frames) @ ISO200 |
| Filter/equipment |
2" Baader Multi-Purpose Coma Corrector
(MPCC). 2" Baader UV/IR Rejection Filter. |
| Sky Conditions | Seeing: 6/10. Wind: 2/10. Moisture: 1/10. Moon rising, bright sky |
| Ambient Temperature | °C |
| Image Processing | Image Stacking and Calibration in Iris, Final touching in Photoshop. |
(C) Copyright 2007 Paul Mayo.
paulm@skylab.com.au