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Cederblad 51 (Ori)
Click on the image for a larger version
| Date/Site: |
5., 16. and 19. February 2025, e-EyE |
Exposure/
Filter: |
R: 26 x 180 seconds,
G: 21 x 180 seconds,
B: 23 x 180 seconds,
Hα: 68 x 300 seconds (-5°C) |
Camera/
Optics/
Instrument: |
ASI 2600MM Pro with Astronomik Type 2c-filter on 400mm f/5 Newton with 2" TS Comacorrector on AP1200 GTO |
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Data acquired remotely using N.I.N.A.,
Off-Axis-Guiding with ASI120,
Focusing with Microtouch,
Calibration with MaximDL 6, processing in PixInsight 1.8 using BXT and GraXpert |
This session too was hampered by high humidity and consequently dewing of the mirrors.
The central region of the reflection- and emission-nebula Cederblad 51 in the „head“ of the constellation Orion emits a strong Hα-signal, which could be captured in the nights of high humidity. The blue reflection-share had to be pushed harder to be visible.
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© Friedhelm Hübner, last revision: 02.04.2025