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M86 (Vir)
Click on the image for a larger version
| Date/Site: |
17. and 19. April 2023. Remote observatory on the AAR club's site in Presberg |
Exposure/
Filter: |
RGB: 22 x 300 seconds (-10°C),
L: 16 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 |
Elliptical galaxy M86 sits in the middle of this part of the chain of galaxies, called „Markarians Chain“. The tidally disturbed galaxies NGC 4438 and NGC 4435 look more interesting.
There were setbacks during the change to N.I.N.A., which was forced by the installation of the „Dual Rig“. N.I.N.A. has a plugin enabling synchronized sequences (and synchronized dithering) of multiple parallel setups.
Of 40 luminance- and 46 RGB-frames I had to discard 42 altogether because focus was missed or the synchronization failed and elongated or double stars were produced. It was a fight with N.I.N.A., with the result of better programmed sequences afterwards.
Synchronized dither still sometimes is unstable.
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© Friedhelm Hübner, last revision: 03.12.2023