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Clear skies - 17/10/22

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Clear skies - 17/10/22 was created by flt158

www.met.ie are promising clear skies for Monday night 17th October. 

It seems a good night to set up our refractors, reflectors, SCTs or binoculars. 
Whatever you have!   
With the Moon out of the way, I promise I will try and see V382 Cassiopeiae once and for all. 
If I don't - I won't bother with it again.
I'm firmly convinced that this carbon star is fainter than +13.0. 
I do have a printed Guide 9.1 DVD map at the ready. 

Clear skies, everyone, from Aubrey.  
 
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1 month 1 week ago #111538

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Replied by flt158 on topic Clear skies - 17/10/22

Winds will be light also!
1 month 1 week ago #111539

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Replied by Keith g on topic Clear skies - 17/10/22

Hi Aubery, let's hope for a clear one. I'd like to help you out with this star V382 Cas, I can image down to magnitude 14.5 on a really good night, i'll try to image the filed, let's see how I get on...

This is a very seldom observed star, the latest observation in the AAVSO database is from last December

AAVSO -- WebObs Search Results

Keith.
If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson
1 month 1 week ago #111540

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Replied by flt158 on topic Clear skies - 17/10/22

Excellent to hear from you, Keith!
I will be utterly delighted if you could produce an image of V382 Cas. 
I wonder if you could include 3 Tycho field stars. 
Here are the designations and their magnitudes. 

TYC 3662 2558: 11.0. 
TYC 3662 2542: 11.5.  
TYC 3662 2485: 12.3. 

There is another field star that has a very strange designation. 
It's called 3UC297-012796. It sits right next to V382. 
Its magnitude is 12.7 and I have observed successfully. 

Not to worry if you cannot, Keith. 
There is no pressure. 

You see, I firmly believe that V382 is fainter than any of the.above stars. 

Thank you for the AAVSO link. 
I am very familiar with it. 

Clear skies from Aubrey. 
1 month 1 week ago #111541

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Replied by Keith g on topic Clear skies - 17/10/22

Hi Aubrey, I got it ! Fortunately the skies cleared and the winds died down. I managaed to get a 30 second exposure at ISO3200 to go deep. I have used the AAVSO 'E' chart for this star, I reckon photographically it's at magnitude 11.9 !

So it could be brighter than you think. Unfortunately, my image hosting website at flickr is down at the moment so I can't post a full resolution shot, I'm afraid all I can do for now is show you a very much reduced crop

I have marked the star with an arrow

Keith.
If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson
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1 month 1 week ago #111542
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Replied by flt158 on topic Clear skies - 17/10/22

 Thank you, Keith, for your sensational image!
You definitely got the right star. 
Congratulations!

Sadly I looked and looked over and over again and again using each of my eyepieces - even my most powerful ones. My Radian 3mm gives 374x. 
But there was just no sign of V382 Cas. 

Maybe I will try again another time. 

However I had an excellent time observing Jupiter later in the night. 
And I promise I will inform everyone here as to what I observed. 

Very best regards from Aubrey. 
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Replied by Keith g on topic Clear skies - 17/10/22

Ah pity, I wonder is it that the human eye is least sensitive to red light? It is faint, and therefore maybe just too hard to see sub magnitude 12.

Keith.

 
If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson
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1 month 1 week ago #111544

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Replied by flt158 on topic Clear skies - 17/10/22

I know I have a cataract in my observing eye, Keith. 
But the experts say I'm nowhere near an operation yet. 
My non-observing eye is even worse. 
So it's no use using that one. 

I could see a 12.3 magnitude star very close to V382. 
So I would suggest the carbon star is fainter than that one. 

Clear skies from Aubrey. 
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1 month 1 week ago #111545

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Replied by flt158 on topic Clear skies - 17/10/22

Hello everyone. 

All eyes in my back garden were on Jupiter last Monday night (17/10/22). 

Jupiter's distance from Earth was a little less than 602,000,000 kms. 

I had my William Optics 158mm f/7 apochromatic refractor set up. 
You see, 2 moons of Jupiter were going to be occulted by the giant planet.
I got this information from www.skyandtelescope.com  

The first, Europa (5.2 mag) disappeared behind at 22.28 Irish Summer Time (IST). 

Then later at 23.54 IST it was the turn of mag 5.0 Io. 

Europa took 3 minutes to be fully occulted. 

The larger moon Io took 5 minutes to be occulted. 

Only Callisto (mag 5.8) and Ganymede mag 4.5) were left on the eastern side of Jupiter at midnight. Brilliant!

3 field stars were visible near Jupiter: TYC 4663 49 (mag 9), TYC 4663 151 (mag 10.9) and TYC 4663 771 (mag 8.2). That 3rd star has a sp. class of K2. And it did sport a nice orange tinge. 

I observed other features with the -2.9 Jupiter. 
At 225x I could see that the NEB was a bit darker than the SEB. 
Also the North Polar and South Polar regions were observed at 225x. 
The 2 narrow belts the STB, and the SSTB,were visible too below the SEB.  

Could this whole event be my number 1 of 2022?
Maybe. But there is a certain Partial Solar Eclipse next Tuesday!

Valerie and another girl, who is a church worker, was with me. 
There was no wind and the temperature was 8 degrees C and getting colder. 

We also observed the beautiful double star Almach and M45 the Pleiades. 

There could be clear skies again on Thursday 20th October. 

Talk to you all soon!
Aubrey.  
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Replied by Until_then-Goodnight! on topic Clear skies - 17/10/22

Hi Aubrey, 

It was great to read your from Monday night as your vivid descriptions of the occultations help me to relive those wonderful few moments.

Like you, I also took in 'The Seven Sisters' - They looked beautiful at 42X. I waited a bit to have my first look at Mars this year. As it was low in the East, I had to contend with poor seeing, but I did pull out some of its albedo features. I'm looking forward to observing the Red planet over the next couple of months.

I tried to observe Neptune too, but I failed to locate it. Maybe next time. Before finishing up I noticed Auriga appearing over the roof tops...it's always nice welcoming old friends back...roll on winter observing!

Here's to many dark and clear nights.

Darren.
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1 month 1 week ago #111548

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Replied by flt158 on topic Clear skies - 17/10/22

Hello Darren. 
It's always great to hear from you. 

Regarding Mars you might have a go at finding the red planet on the Sky and Telescope's website. 
Simply click on the (Astronomical) Tools and scroll down a short distance to Mars Profiler. 
Then put in your Universal Time. 
And away you go!

It was also super to have you on the phone yet again!

Clear skies from Aubrey. 
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Replied by Until_then-Goodnight! on topic Clear skies - 17/10/22

Hi Aubrey,  

Sorry for delay coming back to you, and thanks for suggesting the Sky and Telescope Mars resource...I must check it out.

Clear skies,

Darren.
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