Astrojohn

Bexhill 2nd May 2024 is ‘How do they get those pretty astronomy pictures’.
Maybe I should get a batch of images together for those without telescopes?

The lecture on technical challenges of measurement in astronomy went well and loads of interesting questions. All started from the slow (15years) of looking for exoplanets round V470 Cam. Easily visible reduction in the errors over the time I have been making measurements. Some of the error reduction techniques I have used.

Now loaded on arXiv.org Cornell University Archive.

1. arXiv:2206.06919  [pdf, ps, other]  astro-ph.SR astro-ph.EPEclipse timing variations in post-common envelope binaries: Are they a reliable indicator of circumbinary companions?
2. Authors: D. Pulley, I. D. Sharp, J. Mallett, S. von Harrach
3. Abstract: Post-common envelope binary systems evolve when matter is transferred from the primary star at a rate that cannot be accommodated by its secondary companion. A common envelope forms which is subsequently ejected resulting in a system with a binary period frequently between 2 and 3 hours. Where circumbinary companions are predicted, it remains unclear whether they form before or after the common en…
4.  ▽ MoreSubmitted 14 June, 2022; originally announced June 2022.Comments: 16 pages, 8 figures, 7 binary systems and 163 observations

Astroart 8.0 is now available from the MSB-Astroart.com

Many improvements and better accuracy in some functions.

All major cameras, telescopes, filter wheels and focusers are supported by Astroart. Updated plugins are released for free.

Astroart is also an open system with plug-ins and development kit for C++, C#, Pascal, Visual Basic. Fully compatible from Windows 10 to Windows XP. Compatible with WINE for image processing.

Now being used in Woodland Observatory.

So much space pollution being caused deliberately by Elon Musk. My research could become more difficult as it will for anyone wanting to look beyond the earth. Over 11000 satellites to be launched…your joking, We only have a small percentage so far..

It wrecked my measurement of distant binary systems last night..

https://phys.org/news/2020-05-costly-collateral-elonmusk-starlink-satellite.html