UZ Boo

[Dr Paul Leyland]

Jeremy Shears wrote:

Good to see this coverage of UZ Boo and especially to see the appearance of SH’s. Hopefully these will grow.
The sky here last evening was dreadful: I could only see Vega, Altair and a very coppery Moon.

Nothing from me tonight because of the strong calima. Vega and Arcturus are obvious, Deneb and Altair with some difficulty. The moon is rising. Na light pollution from El Paso / Los LLanos about 2-5km away is visible, as is that from Santa Cruz on the other side of the island with a 1500m high ridge between us. Remember that La Palma has strict regulations against emitting light upwards and they are obeyed by and large, especially municipal street lighting.

One of the worst nights I’ve seen in a long time, and I haven’t even mentioned the thin patchy cloud.

[Magnus Larsson]

Hi!

Another series from my backyard in Malmö, Sweden. No clear humps here…

Magnus

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   2024-08-19_UZ_Boo.png
   

[Mr Ian David Sharp]

Hi all,

A real drop in brightness, much fainter tonight. Here are 50 more measurements from here in the UK.

Cheers
Ian.

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   UZ-Boo-20240820.jpg
   

[Gary Poyner]

UZ Boo had faded to 16.66C by last night, so now we’ll be looking for rebrightenings over the next few days.

Gary

[Magnus Larsson]

Hi!

I captured something of a series yesterday night from my backyard. 5 min exposures now and considerable error bars so the movements are possibly noise.

Magnus

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   2024-08-23_UZ_Boo.png
   

[Mr Ian David Sharp]

Hi all,

I managed 26 x 180s images last night – see attached. I concur with Gary and Magnus that it is down at about mag. 16.2 in V.

Cheers
Ian.

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   UZ-Boo-20240824.jpg
   

[Gary Poyner]

Minimum is around mag 20, so it’not over yet!

Gary

[Dr Paul Leyland]

V= 16.27 +/- 0.02 at JD2460547.3847 ~= 20240824-21:13Z

[Magnus Larsson]

Hi!

Unless there is something seriously off with my routine, I captured it at around magnitude 13 yesterday. Here is a series designed for mag 16 (Clear filter, 5 min exposures).

Magnus

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   2024-08-26_UZ_Boo.png
   

[Mr Ian David Sharp]

Magnus Larsson wrote:

Unless there is something seriously off with my routine, I captured it at around magnitude 13 yesterday. Here is a series designed for mag 16 (Clear filter, 5 min exposures).

That’s amazing Magnus!

Poor weather here last night, but I reckon there’s a decent chance I’ll be able to get it again tonight.

Cheers
Ian.

[Jeremy Shears]

Nice catch on the rebrightening, Magnus!

[Gary Poyner]

Fine work Magnus. I’ll add this to the CVnet page now!

Well done,
Gary

[Mr Ian David Sharp]

Hi all,

Poor, hazy conditions from here last night, but I managed 8 images and they are swinging around an average of 15.07 in V.

Cheers
Ian.

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   20240826_UZ-BOO_V_Ham-Observatory-Selsey-UK_IDS_plot_lines_check.png
   

[Magnus Larsson]

Hi!

Thanks 🙂

I had it at 14.6-ish last night, C-filter.

Magnus

[Mr Ian David Sharp]

As of a few minutes ago, it’s back down to 16.1 in V again.

Ian.

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   UZ-Boo-20240827.jpg
   

[Denis Buczynski]

Observations tonight 20240827-28
Uz Boo

#LOCATION=57 50 41.9N 03 47 53.8W H35m
#NAME DATE MAG MAGERR FILT TRANS MTYPE CNAME CMAG KNAME KMAG AIRMASS GROUP CHART NOTES
uz boo 2460550.423 16.133 0.055 v NO STD 144 13.882 121 11.561 na na X37580AA na
uz boo 2460550.424 16.127 0.053 v NO STD 144 13.893 121 11.576 na na X37580AA na
uz boo 2460550.425 15.986 0.053 v NO STD 144 13.924 121 11.584 na na X37580AA na
uz boo 2460550.426 16.248 0.066 v NO STD 144 13.907 121 11.576 na na X37580AA na
uz boo 2460550.427 16.013 0.054 v NO STD 144 13.943 121 11.606 na na X37580AA na
uz boo 2460550.428 16.046 0.056 v NO STD 144 13.922 121 11.604 na na X37580AA na

Observations uploaded to VSS Database
Denis

[Magnus Larsson]

Hi all,

Another re-brightening in progress – I have it at 13.65 with Clear filter just now.

Magnus

[Mr Ian David Sharp]

Magnus Larsson wrote:

Another re-brightening in progress – I have it at 13.65 with Clear filter just now.

Yes, I agree, I’m getting an average of 13.66 in V over 11 measurements.

Cheers
Ian.

• This reply was modified 2 months, 1 week ago by Mr Ian David Sharp.

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   UZ-Boo-20240828.jpg
   

[Mr Ian David Sharp]

Hi all,

14.65 V last night.

Cheers
Ian.

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   20240829_UZ-BOO_V_Ham-Observatory-Selsey-UK_IDS_plot_lines_check.png
   

[Denis Buczynski]

observations tonight at Tarbatness of UZ BOO show the star has faded to 16.11 measured in Astrometrica 6x60s v band 20240830.87872
Denis Buczynski

[Author]

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