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M15 and IFN (Peg)
Click on the image for a larger version
| Date/Site: |
4., 5. and 7. September 2021. Remote observatory on the AAR club's site in Presberg |
Exposure/
Filter: |
R: 27 x 300 seconds,
G: 21 x 300 seconds,
B: 23 x 300 seconds,
L: 96 x 300 seconds (-20°C) |
| Camera: |
Moravian G3-16200 with Astronomik Type II-filters |
Optics/
Instrument: |
250mm f/4,7 Newton with VIP-3010 Paracorr on 10Micron GM1000 HPS |
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Guiding: ASI120 attached to a 61mm-finder,
focusing: Microtouch and FocusMax,
data acquired remotely using CCD-Commander, PHD_Broker with PHD2/multistar-guiding and MaximDL 6,
processing: MaximDL 6 and PixInsight 1.8 |
The center of the globular cluster M15 suffered a core collapse and therefor is extremely compact.
The right part of this image shows some "galactic cirrus". Dust and molecular clouds between the stars and above the galactic disk. They don't glow by themselves but reflect the integrated light of the stars of our galaxy, and are therefore also called "Integrated Flux Nebula".
This framing was inspired by the outstanding image by Bart Delsaert.
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© Friedhelm Hübner, last revision: 03.12.2023