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M20 and M21 (Sgr)
Click on the image for a larger version
| Date/Site: |
June 29., 30. and July 8., 2016, Puntagorda, La Palma |
Exposure/
Filter: |
R: 6 x 300 seconds and 6 x 180 seconds
G: 5 x 300 seconds and 6 x 180 seconds
B: 7 x 300 seconds and 6 x 180 seconds
(all -20°C) |
| Camera: |
QSI 632 with SBIG- and Baader-filters |
Optics/
Instrument: |
4"-TMB of the AAR on Klaus Weyer's EQ6 |
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Guiding: Lodestar attached to a 61mm-finder,
focusing by hand with USB_Focus,
image acquisition, calibration: MaximDL 6,
processing with PixInsight 1.8 |
Producing this image was a major struggle against clouds, fog, seeing, hard- and software.
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© Friedhelm Hübner, last revision: 03.12.2023