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 Post subject: Comet Catalina
PostPosted: Sat Nov 14, 2015 3:24 pm 
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Ross,
Will comet Catalina be abled to be observed and pictured by you using the robotic telescope and then your home comet capture system.
Peter.


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 Post subject: Re: Comet Catalina
PostPosted: Sat Nov 14, 2015 3:40 pm 
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Yes Peter, and hopefully you'll be able to take your own pictures of it too!

It's approaching perihelion at the moment, and then should be visible in the second half of December and early January. It may just reach naked-eye visibility (from a dark site).

There will be more details in my comet update in our next newsletter.


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 Post subject: Re: Comet Catalina
PostPosted: Tue Dec 08, 2015 8:12 am 
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If by any chance the sky is clear tomorrow morning (Weds 9th), then this is where to look: low in the SE before dawn. It will be around 20 degrees above the horizon, and Venus aind Iota Virginis will help to star-hop to it:
Attachment:
File comment: Comet Catalina just before 7am on 9-Dec
catalina.png
catalina.png [ 76.34 KiB | Viewed 4661 times ]
Attachment:
File comment: Close-in view showing comet's position relative to Iota Virginis
catalina2.png
catalina2.png [ 57.65 KiB | Viewed 4661 times ]

Here's a wide-field picture taken last week from Germany:
http://kometen.fg-vds.de/pix/2013US10/2013US10_28112015.htm
And a lovely one from the previous week which shows the dust and ion-tails pointing in opposite directions:
http://kometen.fg-vds.de/pix/2013US10/2013US10_1_24112015.htm


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 Post subject: Re: Comet Catalina
PostPosted: Mon Dec 21, 2015 7:32 am 
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I saw the comet quite clearly this morning, through my 15x70 binoculars.

Seeing that the sky was mostly clear, I went out just before 7am and with my binoculars fitted to a tripod and the help of my Nexus7 running SkySafariPlus as a "head-up display" I quickly star-hopped from Spica through Virgo to find it.

This morning it was higher in the sky than when I glimpsed it a fortnight ago, so it was much easier to see the coma, and I could even detect a vestige of the ion-tail (pointing away from the Sun).
It appeared to me to be slightly fainter than a couple of nearby 7th-magnitude stars:
Attachment:
File comment: Cartes du Ciel chart showing comet Catalina on 21-Dec.
catalina.png
catalina.png [ 80.4 KiB | Viewed 4537 times ]

Then I had a quick look at Venus, Mars and Jupiter before packing away.


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 Post subject: Re: Comet Catalina
PostPosted: Wed Dec 23, 2015 11:46 am 
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This morning the clouds cleared shortly before dawn, so I managed to grab an image of the comet from my back garden:
Attachment:
File comment: Comet Catalina on 23-Dec. 26x 18-sec using Pentax K110D on 70ED operating at f/4.1.
c2014us10_23dec.png
c2014us10_23dec.png [ 488.63 KiB | Viewed 4518 times ]


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 Post subject: Re: Comet Catalina
PostPosted: Sat Dec 26, 2015 5:05 pm 
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There may be a clear spell around dawn tomorrow (Sunday 27th).
If so, this is where to look - around 45 degrees up in the South-South-East:
Attachment:
File comment: Comet Catalina at 7am on 27-Dec
catalina.png
catalina.png [ 75.09 KiB | Viewed 4494 times ]
It's around 8 degrees South of the bright star Arcturus (Alpha Bootes).


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 Post subject: Re: Comet Catalina
PostPosted: Fri Jan 15, 2016 10:32 am 
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The comet is now tracking into Ursa Major, and last night was close to Alkaid.
So it's very low in the sky in the early evening, but rising to almost overhead just before dawn.

I managed to capture it in the early hours through my window, as it rose above the trees:
Attachment:
File comment: Comet Catalina from indoors on 15-Jan. 72x 1-min using HX916 on TS70ED at f/4.1, rescaled by 0.75x.
c2013us10_15jan.png
c2013us10_15jan.png [ 212.23 KiB | Viewed 4610 times ]
I had my little 70mm refractor on a Celestron LCM alt-az mount clamped to the windowsill, and then took out the field-rotation in the post-processing (hence the cut-off corner).

The broad dust-tail is curving downwards, and there's a trace of the narrow straight ion-tail around the two o-clock position.


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 Post subject: Re: Comet Catalina
PostPosted: Fri Jan 15, 2016 2:14 pm 
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The forecast is for clear skies tomorrow (Saturday) morning.
If anyone fancies a look, the comet will be almost overhead at 6:30am, and easy to locate from the stars in the handle of The Plough:
Attachment:
File comment: Comet Catalina at 6:30am on Sat 16-Jan. The circle shows the 4-degree field of 15 x 70 binoculars.
catalina_16jan.png
catalina_16jan.png [ 151.9 KiB | Viewed 4603 times ]


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 Post subject: Re: Comet Catalina
PostPosted: Sat Jan 16, 2016 9:44 am 
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It was a little hazy this morning (but very cold and frosty), however I did manage to image the comet before breakfast:
Attachment:
File comment: Comet Catalina on the morning of 16-Jan. 25x 30-sec using Pentax K110D on TS70ED at f/4.3
2013us10_16jan.png
2013us10_16jan.png [ 274.76 KiB | Viewed 4598 times ]

With the target directly overhead, I found my right-angle viewer invaluable for aiming the camera:
http://www.boltonastro.co.uk/forums/viewtopic.php?f=4&t=425


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 Post subject: Re: Comet Catalina
PostPosted: Wed Feb 03, 2016 7:31 am 
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Now that the comet has tracked into the Northern sky, it's visible in the evening (and then all through the night). So yesterday evening I got my clearest view yet, with it high up in a dark sky. It was easy to find quite close to Polaris, and I could easily see the coma with a 130P reflector, but ther was no sign of the tail(s).
With the patchy cloud, I only managed to capture a couple of images before the sky filled in - and then it started to rain!
Attachment:
File comment: Comet Catalina on 2-Feb. 2x 1-min with HX916 on TS70ED at f/4.3.
c2013us10_2feb.png
c2013us10_2feb.png [ 378.25 KiB | Viewed 4445 times ]


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