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Going east from Anaxagoras I think you may be looking at craterlets in Goldschmidt – and then on to Barrow. Perhaps the northmost dark feature is Scoresby. There is indeed a ray between Barrow and Scoresby.
Very well deserved Merlin medal. (I missed the early bit of the YouTube stream, but have caught up with all of it now.)
Taken through a luminance filter only, with zeropoint from UCAC4 R mags, the SN comes out around R = 14.4
The timestamp is slightly wrong. I leave Astrometrica to take the start of exposures from individual FITS for track and stack (which is correct). It won’t automatically read the midpoint value put in the header by Maxim when I do a prior stack in that software. Of course I could input the midpoint manually into Astrometrica using the image parameters menu…
It is all very mysterious, Andrew. If I look at the thread on my laptop, Robin’s image is there to see (there’s a green circle around the transient, and red circles around photometric comparison stars). There is an empty box where the image should be when I look on my ipad, and no box at all when I look on my phone! And I initially thought your comment was a bit passive aggressive. I do apologise for my uncharitable – and fortunately private – reaction.
Congrats. It is at a nice northerly declination, so convenient for us. The transient is located near the Cyg-Cep-Dra intersection, which is halfway up the zenith for me at 2100 at this time of year. I’ll try to capture an image tomorrow.
Thanks Bill. Saw a nice meteor – probably sporadic – last night while setting up the scope late evening. Came from northern part of UMa.
It is in Crater now, isn’t it. I can only imagine how difficult it must be now to see visually. If there’s a clear spell tomorrow morning, I might get up before the streetlight switch on at 0500 and try to capture an image.
Cambridge goes to lim 6.5, S&T to 7.6. You mention an atlas which goes deeper, so these may not meet your requirements.
I really like my Sky and Telescope Pocket Sky Atlas – you could get the Jumbo version which is simply larger format. I also have the Cambridge Star Atlas fourth edition by Wil Tirion. If you want me to send you representative pics of the charts, let me know.
You could simply describe the spectrum and make attributions to chemical composition. Rather than go the whole hog to object ID. And post your comment under the pseudonym Urbain Le Verrier.
You are quite right. Had not looked at that section until your prompting. Oops. Ah – this had been noticed after printing. You can download the one page PDF with the corrections from this website. Click on the publications tab.
You probably know this but I’ve just put the coordinates and time into MPChecker and it doesn’t output Neptune. I guess it is in the name.
Ignore some of the mess ASIcap has put into the FITS header. I usually acquire using Maxim, but I was experimenting with camera settings last night, and it is much easier in ASIcap. Mono sensor ASI178MM. 2.4um pix, 1.26″px. FL 392mm. C8 Hyperstar. Sub exp = 20s.
?Meteor
https://1drv.ms/u/s!Agvxu8wNOxpAgQiU7zZ-xLYBmUDN?e=4iTdAI
?Trail
Yes, of course. I’ll prep the bias/dark/flat calibrated FITS for you. I have been experimenting with higher gain, so the dynamic range is terrible though! Just post if there’s any other info you need. Suffice it to say, I have decided 180 gain with the Hyperstar / ASI178MM config is not a good idea.
