SQM 21+ for three minutes?

Last night, the SQM meter could record during a short clearing in the clouds a value of SQM 21. It seems too good to be thru! If the data is correct, it’s probably not spectacular, but symbolically a milestone in our fight around local light pollution. Major sources of pollution, like the Hoegaarden InBev brewery and the Tienen sugar refinery have reduced their output significantly over the years. In addition the local town has switched off public lighting after midnight during the week. Now also the public lighting is modernized towards LED, with fixtures that have a much better light distribution. Also unnecessary light points were removed.

Update 29/10: again the SQM meter went over SQM 21 last night. So now it starts to be a little suspicious! SQM 21,19 seems to high a value. Will check!!

Mars, 19 October 2020

Very bad and cloudy weather is persistent in th elow countries, occasionally showing Mars in short breaks between clouds and rain. I managed to capture one IR+ G session in between and through clouds (no blue).

This was the clearing in between the cloud deck 🙂

Mars in the morning of September 6th

For the night of September 5th to 6th, predictions were not that good: clouds passing over, some jetstream that started increasing. I had the scope outside and collimated using the tri-Bahtinov on a star of the Pegasus square in the evening, it then cooled all night .

After a few hours of sleep, I woke up to see that Mars was high in the sky looking very bright & pretty next to the Moon. It was just freed up of a cloud band that barely cleared the beautiful duo.

When I started imaging, it was obvious that the seeing was fairly good. The larger albedo structures on the planet were steadily visible on the laptop screen.

The first series prooved to be the best. it was composed of

  • IR 120s @62FPS 7509 frames CM 207°
  • B 120s @22 FPS 2730 frames CM 207.1°
  • G 120s @40 FPS 4831 frames CM 206.6°
  • R 120s @76 FPS 9188 frames CM 206.1°

with a classic C11, a unbranded 2″ barlow, a Starlight XPRESS 1 1/4″ 7-position automated filter wheel with Baader filters, an Esatto 2″ focusser and the ASI290MM

Altitude 45°
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