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Sh2-91 (Cyg)
Click on the image for a larger version
| Date/Site: |
18. July 2018. Remote observatory on the AAR club's site in Presberg |
Exposure/
Filter: |
OIII: 32 x 300 seconds
Hα: 18 x 300 seconds (-20°C) |
| Camera: |
QSI 632 with Astronomik Type II-Filters |
Optics/
Instrument: |
250mm f/4 Newton with Baader RCC1 on 10Micron GM1000 HPS |
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Guiding: Lodestar attached to a 61mm-finder,
focusing with Microtouch and FocusMax,
data acquired remotely using CCD-Commander and MaximDL 6,
calibration: MaximDL 6, processing: PixInsight 1.8 |
The camera's orientation is just not right for this filament.
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© Friedhelm Hübner, last revision: 03.12.2023