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It will be interesting to see how Peter’s data turns out and whether LED streetlights are generally a good or a bad thing. The fact that road lighting levels with LEDs are so much higher, even in residential streets, seems highly unnecessary to me and I don’t know if there is much we can do about it. There is also a problem for imagers in that the LED light is broadband and much more difficult to filter than sodium.
In Chelmsford many residential streetlights are turned off after 1am (it was midnight but the local, environmentally friendly, LibDems kicked up such a fuss that the Council changed the time). Despite the local paper predicting mass murder as a result (“Chelmsford returns to the dark ages…”) recent crime stats have shown a reduction. It certainly makes a big difference to my skies.
Nick.
Indeed, and I had some hair then too…
Great videos, although very few contain Martin himself. I have some old videos too and may need to retaliate.
Nick.
Hi Andy,
Depending on what you are doing it may not be relevant here but I’ve always found it much better to put a cheap headless PC by the telescope pier. You can then connect all of the telescope/camera USB cables to this directly and remote desktop to it over a network from anywhere.
Nick.
If you are logged in you can download the audio of Tony’s talk from here (18MB, MP3).
Hi Michael,
I have an audio recording of the full meeting but Tony didn’t want his slides/videos to go online. I do have slides for the other talks though, particularly Denis’ George Alcock lecture and they will go online as soon as I’ve completed the edit.
I can post an MP3 of the audio from Tony’s talk if you are interested.
Nick.
Paul,
That’s a nice image. I had a similar view in the early evening. It really does demonstrate how much fainter Jupiter is compared to venus. Here’s my picture from last night.
Nick.
I did, but visual observing is so hard compared to imaging!
I only have a C6 for visual use mounted on a Vixen Sphinx mount. It found the field without problems and I used around x150 but the conditions were so grotty that I could only see down to mag 12.5 or so (I could clearly see AAVSO star 111 but star 125 was right on the limit). I started to observe around 2240 UT and initially I couldn’t see V404 Cyg. It then gradually became visible until around 2320 when it disappeared over a period of a few minutes even though stars of similar brightness were still there. Ten minutes later it was back and brightening but I had to go to bed…
I must admit it was very nice to see photons from a black hole jet with my own eyes but it made me realise how good CCDs are for imaging things in light-polluted places!
Nick
I’ve been doing an Ic Band run on V404 Cyg tonight with 30s exposures. The conditions are dreadful with drifting cloud and haze but the star is currently varying rapidly. It has just dropped from Ic=9.7 to Ic=11.6 in 12 minutes!
I did another run of 4 hrs last night and V404 Cyg was at around Ic=10.2 with variation of around 0.3 mags. We seem to be getting the boring bit of the lightcurve at our longitudes as you can see from the attached AAVSO Ic lightcurve. My observations are the ones in blue.
It’s definitely worth keeping this object under close observation.
I’m observing V404 Cyg again tonight this time using 30s exposures in Ic. The lightcurve so far tonight is attached. The mean Ic mag is around 10.4 and there are variations of a few tenths of a mag. Nothing like as spectacular as a few nights ago.
Richard,
The McDonald data is very nice. It shows what can be done with a 2.1m telescope and a specially designed photometer running with a 2s cadence. The Argos photometer is described here.
I managed a very short run of less than an hour last night in a short clear patch. There was a lot of variation (> 1 mag). Peak mags were 9.8 in Ic, 11.8 in V.
Michael,
I’ve never seen an eclipse from an aircraft but it clearly gives a completely different perspective on the various wide-angle phenomena, particularly the shadow. Thanks for posting these images. It looks like you had clear windows. I know that some of the eclipse flights had real problems with ice on the windows.
Nick.
Just listened to it. It sounded like a radio adaptation of the early part of Martin’s book with several of the facts changed for dramatic effect. I liked the quote “Does anybody actually read the BAA Journal?”. It’s not every day that you get something like that on Radio 4!
And he did a very good Radio 4 adaptation of Steven Baxter’s alternative history of the Apollo programme, Voyage. I’ve set my recorder for Monday afternoon.
Council on Wednesday agreed that the BAA should produce a DVD of this eclipse. This will include video and stills of the total and partial. We would particularly like to have material from groups around the country who set up public events to observe the partial.
I’ll make a more detailed announcement shortly which will include details of how to submit material.
Nick.
Mike,
That’s a great interview. Do you think they worked out the acronym for your travel group’s name? Remind me to get an autograph next time we meet!
I agree that the shadow bands were very prominent. I did help that there was a very large expanse of white “sheet” to see them on but I’m sure that the very clear atmospheric conditions helped too.
Nick.
Thanks Grant and Gary. It does seem that it was rather hit and miss in the UK but many people saw it.
I’ve just watched my recording of the BBC’s Stargazing Live coverage. I wonder if I can charge them for the cleaning bills that resulted from me throwing stuff at the TV. It seems to me that it would be a good idea for the BBC to actually have someone who knows something about what you see during a total eclipse so they can explain it to the audience rather than having celebs sprouting total nonsense. Perhaps that is too radical an idea?
I’ve spent the day processing my video and stills. Here are some links to stills and video captured in Svalbard on Friday. I apologise for the commentary on the video. It was -21C or so and my brain had died. I do get the impression that the eclipse was “incredible” or “amazing” though.
Nick.
