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NGC 6946 (Cep/Cyg)
Click on the image for a larger version
| Date/Site: |
8. August 2022, AAR-observatory in Presberg |
Exposure/
Filter: |
22 x 300 seconds, (-10°C) |
| Camera: |
ASI2600MC-Pro |
Optics/
Instrument: |
400mm f/5 Newton with Baader RCC1 on AP1200 GTO |
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Off-Axis-Guiding with Lodestar,
focusing with Microtouch,
data acquired remotely using Sequence Generator Pro,
calibration and processing: PixInsight 1.8 |
Sometimes I use the 400mm f/5 Newton (aka „The White Elephant“) to shoot an image via remote-control. Because of its sheer size it is possible to get a deep and detailed image fast. This galaxy on the border of the constellations Cepheus and Cygnus is almost hidden behind the stars of our milkyway.
An earlier image of this object:
NGC 6946 (Cyg)
Click on the image for a larger version
| Date/Site: |
September 25th and 28th, 2011, AAR-observatory in Presberg |
Exposure/
Filter: |
RGB each channel 3 x 900 seconds and 3 x 1200 seconds (-15°C) |
| Camera: |
SBIG ST10XME, CFW9 with SBIG LRGB-filters, AO-8 |
Optics/
Instrument: |
10“ f8-Ritchey-Chrétien on AP1200 |
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Calibration and deblooming: MaximDL 5,
processing with PixInsight 1.7 |
This galaxy shining through the outer layers of the milkyway was exposed more detailed (with longer focal length) and with greater depth (by longer exposures of 900 and 1200 seconds) than before. Because of the smaller field of view only the galaxy could be imaged; the aesthetic pairing with the open cluster NGC 6939 in Cepheus is shown in this wide field image.
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© Friedhelm Hübner, last revision: 03.12.2023