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NGC 7023 (Cep)
Click on the image for a larger version
| Date/Site: |
18., 21., 24. Juli, 10. and 17. August 2023. Remote observatory on the AAR club's site in Presberg |
Exposure/
Filter: |
RGB: 48 x 300 seconds (-10°C),
L: 43 x 300 seconds (-20°C) |
Camera/
Optics/
Instrument: |
Touptek 294CP on 150mm f/5 Newton with 2" Skywatcher Comacorrector,
Moravian G3-16200 with VIP-3010 Paracorr on 10Micron GM1000 HPS |
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Data acquired remotely with N.I.N.A.,
Guiding: ASI120 attached to a 61mm-finder,
Focusing with Microtouch,
Calibration and processing: MaximDL 6 and PixInsight 1.8 |
NGC 7023 is called the „Iris-nebula“.
The field of view of the „Dual Rig“ is lareg enough to present the enormous dark clouds around the blueish glowing center of the Iris. Apparently the Iris is just a small part of the large gas- and dust-clouds of the „Cepheus Flare Molecular Cloud“.
Nowadays my 2016 image with not even two hours of imaging time would be called a short exposure:
NGC 7023 (Cep) 2016
Click on the image for a larger version
| Date/Site: |
31. August 2016, AAR-observatory in Presberg |
Exposure/
Filter: |
RGB each 12 x 180 seconds (-20°C) |
| Camera: |
QSI 632 with SBIG- and Baader-filters
off-axis-guiding with Lodestar |
Optics/
Instrument: |
10" f4-Newton on AP1200, RCC1 coma-corrector |
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Focusing with RoboFocus and FocusMax,
automatic image acquisition with CCD-Commander and MaximDL 6,
calibration: MaximDL 6, processing: PixInsight 1.8 |
This image is sort of a latecomer. I wanted to shoot this object five years ago with Hannes Schedler's FSQ 85 in his garden in Altaussee. But my camera broke down this very evening.
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© Friedhelm Hübner, last revision: 03.12.2023