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New active area coming into view north of AR2995
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Hi Lyn here is an image I took this afternoon Wed Apr 20 2022 13:25UT with 102mm Skywatcher startravel refractor and Canon 600D
PeterAttachments:
Great news Daryl let’s hope planets are found around Alpha Centauri A and B that would be three solar systems on our door step!
Really enjoyed the meeting which I watched on YouTube last night. The two Ladies who gave the talks on the Multiverse and the Winchcombe meteorite were excellent. I had to agree with Nick James on his sky notes wouldn’t it be great if the Hubble space telescope could be upgraded with new state of the art instruments, or would the cost be a bit prohibitive what with all the other upgrades it would need. I think I will hide under the stairs when launch day comes for JWST!
Peter
I performed Aperture photometry in IRIS on the G channel of the source AT2021afpi Wed Dec 1 2021 18:45UT. I used the 12.2 and 13.2 comparison stars on the AAVSO chart X27438A. I got the magnitude at 12.8m
Mon June 14 23:35UT I get the Nova at 9.0m using the 8.5 and 9.4 comparison stars IRIS was used for Aperture photometry
Peter
Hi Nick same here up in Sheffield I have got my 102mm star travel refractor and Canon 1100D set up ready to go lets hope for a few breaks
Peter
High resolution images of Betelgeuse are available on the ESO website showing before and after images of the surface taken with the Sphere instrument .Could it be dust that is causing the dimming. hears the link https://www.eso.org/public/news/eso2003/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+EsoTopNews+%28ESO+Top+News%29
Peter
Hi David
Its unbelievable that this has never been noticed by Amateurs. But like you say your wife spotted it. Its probable that we are so used to the bright star pattern of Orion that the arrow as gone unnoticed, I bet there’s lots of these asterisms to be discovered. I will have a look next clear night but might struggle with eta with the light pollution around here. Might take my wife out to a dark sight and see if she can spot anything!
Peter
Hi Kevin
The spectra are dynamic like you say, are the strong emission lines early on due to mass transfer from the red dwarf onto an accretion disk around the white dwarf, causing disk instability and increase in light. Or does matter impinge onto the surface of the white dwarf increasing the systems light output, or is it a bit of both. Probably am i right in saying its a little more complicated than that. Anyway nice piece of work
Peter
Is it possible that objects like Borisov, asteroids, comets, even free floating planets permeate the vast regions of interstellar space. So objects like Borisov and Oumuamua are like nomads of the Galaxy having chance encounters with other Solar systems. If this is the case wouldn’t it be difficult to pin down the home star of these objects. Would more of them have a tendency to enter the Solar system from the direction of the Solar apex, the 19.5Km/sec motion of the Sun through space.
Peter
Hi Martin
If you click the expand image button, and then click on the image itself you get a slightly zoomed view. Try it on your April 20th image of Mercury. it doesn’t seem to work on every image
Peter
I once used a scale to try to visualise interstellar distances, at least out to the Proxima Alpha Cen system. I would represent the Solar system as a sixteenth of an inch dot and call that 10,000,000,000 miles diameter, that’s out into the Kuiper belt. Of course we know the Solar system is vaster than this, this is just a rough estimate. The nearest star on this scale would be thirteen feet away, The Voyager spacecraft have just come off the sixteenth inch dot. I haven’t worked out how many tall Giraffes would fill the interstellar void, I don’t think I’ll bother!
