Friday, November 18, 2016

helped at star party (Collingwood)

Helped Ian W with a private school star party gig. While he delivered his astronomy presentation I set up the solar observing equipment. Roadie.

Atop an equatorial mount, I added an ED100 Sky-watcher 900 mm OTA with Nagler Type 5 eyepiece and Kendrick solar full-spectrum filter. Piggybacked a Coronado PST with Pentax 10.5mm.

In white light, sun spot group 2610 was visible (I had looked it up yesterday). I noticed another group. The big spot was at the 5 o'clock position; the small group was at 11. I tried to flip things in my brain given the mirror diagonal.

In the office, I checked the Spaceweather web site. The new group was not yet numbered.

SDO image of Sun in hydrogen alpha

The view in the PST was surprisingly dim. Partly due to the wispy clouds. Still, I could see filaments and proms! Nice.

Later, I spotted a ring! All right: parhelia! It was coloured too. Sweet.

A faint sun dog on the left briefly appeared.

Beautiful weather. Almost shirt-sleeve. 17°!

The students (and teachers) enjoyed the show.

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