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 Post subject: Nova
PostPosted: Mon Jul 31, 2017 1:54 pm 
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Joined: Mon Jan 18, 2010 9:25 am
Posts: 5127
2017 July 30 23.18UT
Time and positions uncertain as caught by surprise.
Clouds in north, transparent in west.
I discovered an unaided eye mag 1 white nova near Aldebaran.
~12 deg elevation ~ 260 or 265 deg azimuth.

Seemed unlikely, but I found one in Cygnus in 1975.

However, it eventually moved slowly.
Unaided eyes and 8x32 BA.

It brightened to mag minus 1 white then rapidly faded.
Lost at mag 6 in 8x32 BA at ~23.20.40 seconds.
It became clearly reddish in 8x32 BA as it faded.
Elevation ~30 deg. azimuth ~230 deg.

Was this ISS??

Regards,
David


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 Post subject: Re: Nova
PostPosted: Mon Jul 31, 2017 4:54 pm 
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Joined: Fri Dec 03, 2004 9:58 pm
Posts: 3271
Location: Wellingborough
Hello David.

I guess you meant to say "close to Arcturus" rather than Aldebaran?

Any way ISS was in the region of Arcturus at approximately 22.43/22.44 and again at 00.18 on the 31st. So probably not what you saw?

Regards,

_________________
Brian
52.3N 0.6W
Wellingborough UK.

254mm LX90 on Superwedge, WO ZS66SD, Helios 102mm f5 on EQ1, Hunter 11x80, Pentax 10x50
ASI120MC Toucam Pros 740k/840k/900nc mono, Pentax K110D
Ro-Ro roof shed


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 Post subject: Re: Nova
PostPosted: Mon Jul 31, 2017 6:09 pm 
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Joined: Mon Jan 18, 2010 9:25 am
Posts: 5127
Hi Brian,
Thanks.
I slept badly, so I probably meant Arcturus?
With the many buildings around here and severe light pollution almost no stars were visible.

If your timing of 00.18 is BST then it was the ISS.

Best wishes,
David

P.S.
Yes I meant Arcturus.
I used a tiny planisphere in the dark and misread it.
A larger planisphere in daylight and I read it correctly.

The object passed maybe 5 to 10 deg left of Arcturus, but initially seemed stationary.
It came up from the horizon I thought going overhead but went a quite different way.

P.P.S.
I was actually watching an urban fox standing on hind legs pulling plastic bags out of the overflowing street bin. He went around both sides.
I got my camera and took two blurred photos, exposures one second hand held.
I think the bright autofocus lamp scared him and he ran off.
He had no luck with the bags as there was no food in them.

I have seen magpies or crows tearing the bags apart for food.

They don't empty the bins till Monday.


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 Post subject: Re: Nova
PostPosted: Tue Aug 01, 2017 6:23 pm 
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Joined: Mon Jan 18, 2010 9:25 am
Posts: 5127
I think that the times in Heavens Above are local times not UT.

So I think I saw the ISS.

Regards,
David


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 Post subject: Re: Nova
PostPosted: Tue Aug 01, 2017 8:49 pm 
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Joined: Fri Dec 03, 2004 9:58 pm
Posts: 3271
Location: Wellingborough
Yes David. My times were BST, taken from SkyMap Pro pass predictions.

Regards,

_________________
Brian
52.3N 0.6W
Wellingborough UK.

254mm LX90 on Superwedge, WO ZS66SD, Helios 102mm f5 on EQ1, Hunter 11x80, Pentax 10x50
ASI120MC Toucam Pros 740k/840k/900nc mono, Pentax K110D
Ro-Ro roof shed


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