Mercury Transit

5 days 23 hours ago #107924 by flt158
Mercury Transit was created by flt158
Hi everybody.

We all know what is happening on Monday 11th November 2019.
We are going to have a Transit of Mercury!
It starts at 12.35 UT.
And I'm setting up my William Optics 158 mm apochromatic refractor on top of a grassy mound across the road from my house.
My wife Valerie is joining me.
The weather seems reasonably promising.
So I should see some part of the transit before the Sun sets behind local houses at about 4 pm - give or take.

It will be my 3rd Mercury transit. It will be nice to make the hat trick!
I am viewing it by image projection and I'm perfectly happy with that.
I have an old 28 mm eyepiece which I will use.

Why not give it a go yourselves?
It is the last one until 2032.

Thank you very much.

Best regards and clear skies from Aubrey.
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5 days 22 hours ago #107925 by Fermidox
Replied by Fermidox on topic Mercury Transit
Yes the big day is here Aubrey. Glorious bright moon in the sky now but the forecast for Limerick is so-so. You might get luckier in the East. I'll zoom in x50 on a filtered camcorder and that should be enough if haze is absent. Missed out in 2016 but great memories of Venus in 2004. Clear skies!

Finbarr.
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5 days 22 hours ago #107927 by Until_then-Goodnight!
Replied by Until_then-Goodnight! on topic Mercury Transit
Hi Aubrey, 

Very many thanks for the 'heads-up'. And I hope you and your wife enjoy the event.

All going well I'm hoping to get out to the Papal Cross for the Mercury Transit  - there is a group of IAS members hosting a viewing for the general public. 

Clear skies, 

Darren. 
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5 days 10 hours ago #107928 by JohnONeill
Replied by JohnONeill on topic Mercury Transit
Hi,
 I (and my wife Sara) saw 1st and 2nd contact from Rush. Nice to see the tiny disc (high contrast) on the Sun. The poor seeing masked any accurate timings. 85 mm refractor used. Now clouds covering Sun, but gaps on horizon moving it.

Good luck with the weather.

John
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5 days 9 hours ago #107929 by lunartic
Replied by lunartic on topic Mercury Transit
At work, work, the curse of the astronomy classes, brought my 12x60 solar binoculars and have to dash out now and then to get a look.  The seeing conditions are not great, but I can clearly see the black dot of Mercury against the solar disk when seeing allows.

Programming today is a race between software engineers striving to build bigger and better programs, and the universe trying to produce bigger and better idiots. So far, the universe is winning.

Rich Cook
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5 days 8 hours ago #107930 by jeyjey
Replied by jeyjey on topic Mercury Transit
I missed first contact (I was looking at the wrong side of the sun like an idiot), but I did catch second and the black drop.  My wife said "it looks like a bullet hole in the sun".

I'm still in shock that the weather actually cleared for it....

Cheers,
Jeff.

Nikon 18x70s / UA Millennium                              Colorado:
Solarscope SF70 / TV Pronto / AP400QMD             Coronado SolarMax40 DS / Bogen 055+3130
APM MC1610 / Tak FC-125 / AP1200GTO               Tak Mewlon 250 / AP600EGTO
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5 days 8 hours ago #107931 by Fermidox
Replied by Fermidox on topic Mercury Transit
Skies cleared from 12.55-13.15 here in south Limerick and there she was, 3 arcminutes onto the Sun's surface and 1/194th the diameter. Pretty dang cool :D



Finbarr.
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5 days 6 hours ago - 5 days 6 hours ago #107932 by JohnONeill
Replied by JohnONeill on topic Mercury Transit
Hi,

The cloud and rain were off and on, but some clear spells.  Image through my 85 mm refractor at 12:49 UT. The seeing at this low altitude was poor. Mercury is the small disc at left.



John
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5 days 3 hours ago - 5 days 2 hours ago #107933 by flt158
Replied by flt158 on topic Mercury Transit
One of the best transits I have ever seen!!
I thank you all for sending in each of your reports.
Hearty congratulations to those of you who took the time to publish the most spectacular images.
Irish astronomy must be at an all time high!

It took some time for me to put my William Optics 158 mm f/7 apochromatic refractor into the back of my car in bright sunshine.
I was only planning to crawl around one corner to set up my equipment on a grassy mound.
My wife Valerie joined me opposite some neighbours' houses and we viewed Mercury transiting our Sun for 1.5 hours.
We used a large A2 pad for our image projection scheme and that pad was placed on my Berlebach observing chair.
My very old 28 mm 1.25" RKE eyepiece behaved brilliantly throughout. The Sun was constantly shining right through it when we had sunshine.
We finally were ready at 12.39 exactly.
We only missed the first 3 minutes; but Mercury was a tiny but full black disc on the chromosphere.
Eventually 2 ladies appeared not knowing what was going on.
Then another lady with 3 children and a dog called Scout joined us.
We observed the transit until precisely 3 pm when the Sun with Mercury was still on the face of the Sun.
At that point our nearest star went behind one of the aforementioned houses.
But we went home very happy.
Thankfully that was just around the corner.

Here are my figures for this extraordinary event:

Weather temperature: 5 degrees C. (In South Dublin)
Mercury magnitude: +6.7.
Distance from Earth: 101,000,000 kms.
Angular Diameter: 10",
True Diameter: 4878 kms.

There were no sunspots or solar flares.

Thank you for reading. 

Aubrey. 
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5 days 3 hours ago #107934 by jeyjey
Replied by jeyjey on topic Mercury Transit

flt158 wrote: There were no sunspots or solar flares.


I did notice (in h-alpha) that the chromosphere was impressively uniform and quiet.

Cheers,
Jeff.

Nikon 18x70s / UA Millennium                              Colorado:
Solarscope SF70 / TV Pronto / AP400QMD             Coronado SolarMax40 DS / Bogen 055+3130
APM MC1610 / Tak FC-125 / AP1200GTO               Tak Mewlon 250 / AP600EGTO
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5 days 2 hours ago #107935 by flt158
Replied by flt158 on topic Mercury Transit
Yes, Jeff. 
The Sun was extremely large on my A2 pad. 
The tiny disc of Mercury had very sharp focus. 
I had no problems in that regard. 

Hydrogen Alpha filters are the business. 
Well done!

By the way, Jeff, where did you observe the transit? (What location?) 
I'm just wondering. 

Aubrey. 

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5 days 2 hours ago #107936 by jeyjey
Replied by jeyjey on topic Mercury Transit
County Louth, near Dunleer.

I've a "post" in the grass outside my observatory that I use for solar:




Nikon 18x70s / UA Millennium                              Colorado:
Solarscope SF70 / TV Pronto / AP400QMD             Coronado SolarMax40 DS / Bogen 055+3130
APM MC1610 / Tak FC-125 / AP1200GTO               Tak Mewlon 250 / AP600EGTO
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5 days 28 minutes ago #107937 by flt158
Replied by flt158 on topic Mercury Transit
Excellent setup, Jeff!

Thank you. 

Aubrey. 

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4 days 23 hours ago #107938 by Fermidox
Replied by Fermidox on topic Mercury Transit
Classic report Aubrey, really enjoyed it. Love the idea of the two old dears showing up with nary a clue what you were up to :D
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4 days 9 hours ago #107939 by Until_then-Goodnight!
Replied by Until_then-Goodnight! on topic Mercury Transit
Very many thanks Aubrey, John, Paul, Jeff, and Finbarr for detailing your observations. In the end, I was unable to make it out to Phoenix Park so I missed the event. Thanks to your reports though, I got a great sense of what it must have been like to watch the Transit of Mercury. Fingers crossed for 2032!

All the best and clear skies, 

Darren. 
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4 days 7 hours ago #107940 by flt158
Replied by flt158 on topic Mercury Transit

Fermidox wrote: Classic report Aubrey, really enjoyed it. Love the idea of the two old dears showing up with nary a clue what you were up to :D


Well, Finbarr, they weren't quite "old dears" but I know what you mean!
By the way, we observed the transit for 2.5 hours. 
We needed hot soup after it all and Vitamin C.  

Those images from John O'Neill and you Finbarr are truly out if this world. (Pun intended!!)

One last thing, Finbarr, I need to ask. 
How the Dickens did you get the emoji?
They just won't appear for me. 

Aubrey. 
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4 days 2 hours ago #107942 by Fermidox
Replied by Fermidox on topic Mercury Transit
I would have seen the entire transit today Aubrey but I'm not complaining with the half hour I did get yesterday. As for that emoji I just typed a colon followed by a capital D. I think quite a few of the functions of this website have gone away unfortunately.

Finbarr.
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