The prominence observed yesterday shot out a huge plasma streamer overnight. Some of it remained today
Spot 2713 is also showing some nice structure.
This time of year since, it does not get really dark, it isn’t easy to image DSOs. However, Jupiter’s Great Red Spot was supposed to be transiting at about 12:40 so I set up to see if I could get an image. I have found it difficult to get a decent image of Jupiter this year because of its low altitude, and last night was no exception. After some extensive processing, you can at least see the red spot, and if you look hard there are other blobs and features. Coudn’t see any sign of Nick’s GRS streamer though. I managed to miss Callisto too – it is off-stage to the left!
Globulars seemed to be a reasonable bet in the circumstances, so here is M10 and M12.
Then on to NGC 6309, a planetary nebula (the Box nebula)
Finally on to M107 a small globular in Ophiuchus.
I also observed NGC 5746, 5846 and 5850, but the images aren’t really worth posting.
Then it started to get light – – –
After a bit more work processing NGC5746, I managed to recover something, even though it is not brilliant. Just shows, you can see DSOs in the summer twilight!
Following some recent complaints from RAG members concerning the lack of solar features (you know who you are), I decided to talk to my friend Amun-Ra, with whom I have a “special relationship”, about this. Mr Ra protested that he had been “ripped off” for years by people with cheap telescopes on window-sills without any reciprocal concessions, when everyone knows you have to go outside with expensive optics in order to pay Him full respect. However, he agreed to making some small features visible for a limited time only, as he had to rush off to negotiate with a minor god of the underworld to try to de-nuclearise the solar system.
So I quickly got these (relatively poor) images early this morning when the sun was at a very oblique angle to the double glazing. I felt it necessary to do this before finding out Mr Ra had changed his mind on his twitter-feed.
(For those unfamiliar with ancient Egyptian gods, Ra was the sun god, Amun was the king of the gods, and they were later merged to become Amun-Ra. I’m sure there can’t be any modern parallels – – – )
The moon phase, nearly full, wiped out any prospect of DSO observing tonight, but it seemed ideal to do a bit of dome spotting.
Domes tend to be small, and that stretches the poor little window-sill ST80 to the limit.
Anyway, for what its worth here is an image of 3 of the Gruithuisen domes. Mons Gruithuisen, Gruithuisen gamma and Gruithuisen delta. You can tell that they are raised domes as their shadows are reversed to those of craters.