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Tampo-san (SAAO) writes:
“PNV J19450648+1822422 was originally discovered by the NMW-TexasTech
survey. Its position coincides with a known eclipsing binary candidate
in Gaia, with an orbital period of 9.9011 d. Thus, time-resolved
observations may reveal eclipses during its decline as the photosphere
recedes.”It turns out that there was a false signal and this is not eclipsing. Sebastian Otero has updated the VSX entry accordingly
I estimate V = 8.32 (2026-08-27T06:09). Free moon image from the 11in RASA in Utah (iTel T68).
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Hi David,
Very nice image. It will be interesting to see the colour change over the next few weeks.
Before I saw your post here I noticed that your image (in the Gallery) was mirrored so I flipped it round to give the correct view. Hope you don’t mind?!
Sometimes happens with some combinations of iTel telescopes and image processing software.
Mike.I don’t mind at all Mike: this makes complete sense. The 11 in RASA at UDRO does produce nice OSC images; and this stack was with the moon interfering too (about 40-45 deg angular sep from recollection). The file sizes of the subs are massive.
A quick image of the nova this morning before moving on to Nova Tauri. No chance for a spectrum as it was too low.
The latest ATel#18014 suggests that the spectrum is changing rapidly.Exactly as Mike said, the spectrum is changing very rapidly. This is my observation from last night August 27.88
https://britastro.org/specdb/data_graph.php?obs_id=21392&obs_validated=&obs_observer_id=HAL&r_c=1&f_c=0&o_comment=&plot=PlotAttachments:
Hi all, I took this image but new to spectroscopy and not sure if anything I’ve done is correct. Nova image taken on the 28th August. C11 @ f6.3, Star Analyser 100 and Zwo Asi 678mm camera.
Hi Nigella,
Looks good to me, you’ve got the strong H alpha emission along with H beta and some iron lines (I think). Also the atmospheric absorption bands in the red/IR. If you are new to spectroscopy that’s a great start!The latest Astronomer’s Telegram, ATel#18021 reports the rapid evolution of the spectrum over just a few days and the fact that this is a “Fast” nova. So take a look at every opportunity before it gets too faint.
Mike.Two images of the spectrum of the nova tonight in very difficult conditions. Just a handful of images possible through gaps in the cloud so not great.
But wow!…what a change in just a few days. A very boring continuum on 26th and now really wide and bright emission lines. [They get wider towards the blue end (H gamma) due to the non-linear dispersion of the prism].
Mike.
(20cm diameter, 9 degree prism on the 12 inch F/3.6 telescope. 15 x 10 second exposures).Hi Nigella,
Looks good to me, you’ve got the strong H alpha emission along with H beta and some iron lines (I think). Also the atmospheric absorption bands in the red/IR. If you are new to spectroscopy that’s a great start!The latest Astronomer’s Telegram, ATel#18021 reports the rapid evolution of the spectrum over just a few days and the fact that this is a “Fast” nova. So take a look at every opportunity before it gets too faint.
Mike.Thanks Mike, yes I’m completely new to spectroscopy. Bad weather here at the mo but I’d like to follow up with another image.
A recent Astronomer’s Telegram, ATel#18033, gives details of the latest photometry and spectroscopy of the nova in early September.
Mike.
(This is also a test to see how the Forum is performing…still seems unpredictable to me).
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