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NGC 4725 (Com)
Click on the image for a larger version
| Date/Site: |
26. April, 2. and 17. May 2023. Remote observatory on the AAR club's site in Presberg |
Exposure/
Filter: |
RGB: 42 x 300 seconds (-10°C),
L: 51 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 |
After I cropped the tidal tail of the beautiful galaxy NGC 4747 in my image of May 2020 unfortunately, it was necessary to image the pair NGC 4725 its tidally interacting companion NGC 4747 again with more success. NGC 4712 fits in the larger field of the „Dual Rig“ too.
It was not the „next season“, but I did not forget it.
Here is the image from 2020:
NGC 4725 (Com)
Click on the image for a larger version
| Date/Site: |
16. May 2020. Remote observatory on the AAR club's site in Presberg |
Exposure/
Filters: |
R: 34 x 180 seconds,
G: 36 x 180 seconds,
B: 30 x 180 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: Microtouch and FocusMax,
data acquired remotely using CCD-Commander and MaximDL 6,
calibration and processing: PixInsight 1.8 |
Unfortunately I chose an entirely wrong framing. So the tidal tail of NGC 4747 was cropped.
Have to repeat it in the next galaxy-season.
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© Friedhelm Hübner, last revision: 03.12.2023