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Mars - Neptune conjunction

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#1 macdonjh

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Posted 06 December 2018 - 08:52 PM

Did anyone get to observe the Mars - Neptune conjunction tonight?  The skies for a hundred miles around my house are 100% clouded over, so I'll miss it this time.  It's a good thing I have a Bussard Ramjet in the garage.  I few months at relativist velocity and I'll catch the next one sometime in the early 2200s.  See all of you soon.


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#2 RyanSem

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Posted 06 December 2018 - 09:00 PM

Clouds cleared just in time before they disappeared behind the trees on my property. Felt really neat to see them that close together. 

 

Can't wait to see it again in 200 years :)


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#3 agmoonsolns

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Posted 06 December 2018 - 09:05 PM

How close are they? It's clear here, was just getting ready to set up a scope.



#4 RyanSem

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Posted 06 December 2018 - 09:15 PM

Looked to be about 1/4 degree or less!


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#5 agmoonsolns

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Posted 06 December 2018 - 09:21 PM

Awesome! I am off to set up a telescope, thank you!


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#6 agmoonsolns

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Posted 06 December 2018 - 11:37 PM

OMG, I saw it! Thank you so much for posting about this, I would never have known if it hadn't been for you all. Thank you so much!

 

It looked very close to what SkySafari showed, everything was about in the right place. It was just so cool to see two planets so close in the FOV. Great big orange-tan Mars and tiny little blueish Neptune.

 

Thank you, you are so terrific for posting this!



#7 Napp

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Posted 06 December 2018 - 11:43 PM

Clouds moved in and prevented observing tonight.  Got a good view last night through 15x70 binoculars at a dark sky site.



#8 Dave Mitsky

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Posted 07 December 2018 - 12:18 AM

Mars (magnitude +0.1) will be 0.04 degree north-northwest of Neptune (magnitude +7.9) at 15:00 UT or 10:00 a.m. EST today.


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#9 RyanSem

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Posted 07 December 2018 - 07:57 AM

Mars (magnitude +0.1) will be 0.04 degree north-northwest of Neptune (magnitude +7.9) at 15:00 UT or 10:00 a.m. EST today.

That will be closest approach right?

Can't wait for daylight filters to come out so we can see these things while the sun is up!



#10 mikerepp

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Posted 07 December 2018 - 09:57 AM

Observed it last night in the AT115 and 8mm 82* ES eyepiece. Mars was a blob but Neptune was a nice bluish dot.  



#11 macdonjh

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Posted 07 December 2018 - 11:08 AM

That will be closest approach right?

Can't wait for daylight filters to come out so we can see these things while the sun is up!

We installed a solar switch at our house.  Now whenever there's a "sky event" at an inconvenient time for us, we set up during the day and about fifteen minutes before we start observing flip that switch and turn the sun off.  That extra fifteen minutes gives us a chance to dark adapt.


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#12 macdonjh

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Posted 07 December 2018 - 11:10 AM

Mars (magnitude +0.1) will be 0.04 degree north-northwest of Neptune (magnitude +7.9) at 15:00 UT or 10:00 a.m. EST today.

Yes, for them what missed last night, Mars and Neptune are supposed to be close again tonight (Dec. 7).  I'll miss tonight, too.  Last night's clouds were Nature's preparation for tonight's storms.  0.04o is 2.4 arc-minutes (144").



#13 dscarpa

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Posted 07 December 2018 - 01:27 PM

 We had much needed rain last night so no. We take a look tonight though. David



#14 Dave Mitsky

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Posted 07 December 2018 - 06:05 PM

That will be closest approach right?

That's correct.  Mars and Neptune were nicely placed for observers in Asia around that time.


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#15 John Kocijanski

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Posted 07 December 2018 - 07:16 PM

Just got in from viewing it in my XT4.5.  Pretty easy to see the color of Neptune but not much of a disk due to poor seeing using a 3-6mm Nagler zoom.  Very cool sight to see both in my 7mm Nagler T6.



#16 Qwizatzhaderach

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Posted 07 December 2018 - 07:36 PM

Yes just got to see it prior to clouds rolling in near Boston! First time viewing Neptune! Basically a blueish fuzzy dot, maybe even a disk, in my 8” dob.

Won’t see this conjunction again for 200 years someone mentioned? Glad I made a point to check it out. If your weather permits it’s out there again tonight; go check it out!

#17 NYJohn S

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Posted 07 December 2018 - 08:29 PM

I viewed them tonight. I could just make out Neptune in my 10x50 binoculars with averted vision. I viewed them with my XT8 at 75x. The pair together looked great. Mars a bright orange ball of fire and Neptune a small cool blue disc. 81 Aquarii was about the same distance from Mars as Neptune to the north. A very nice view with the other fainter surrounding stars.

#18 Jeff B

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Posted 07 December 2018 - 08:48 PM

Yes, right now in fact.  What a treat!  In the same FOV and both are disks.



#19 Dave Mitsky

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Posted 07 December 2018 - 08:50 PM

My wife and I observed Mars and Neptune not too long ago with our newest telescope, a 6" f/10 Celestron NexStar Evolution SCT, and an 8-24mm Baader Planetarium Hyperion Mark III zoom eyepiece (63 to 188x).  Mars and Neptune were separated by approximately 16 arc minutes at the time.

 

We also viewed Uranus, 61 Cygni, M2, M29, and M39 as clouds began to cover the sky.

 

Dave Mitsky

Attached Thumbnails

  • Neptune and Mars December 7th.JPG


#20 macdonjh

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Posted 07 December 2018 - 08:56 PM

Yes just got to see it prior to clouds rolling in near Boston! First time viewing Neptune! Basically a blueish fuzzy dot, maybe even a disk, in my 8” dob.

Won’t see this conjunction again for 200 years someone mentioned? Glad I made a point to check it out. If your weather permits it’s out there again tonight; go check it out!

Obviously you were able to use the power of Shai Hulud to keep the clouds away just long enough for you to be an eye witness to the conjunction.



#21 NorthernlatAK

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Posted 07 December 2018 - 09:19 PM

I've got rain up here in alaska, yes rain. The weather is just completely uncooperative and unseasonable. Can't see a gosh darn thing for almost a month (it briefly clears when moon is out). No sign of clear skies either. Missing all the sweet events this season, aaarrrrgggghh!

#22 dscarpa

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Posted 07 December 2018 - 09:44 PM

 Was able to easily frame them in a 13 Ethos for 200X and barely in a 9 WO101 for 300X in my C9.25! Seeing was fairly good with Mars showing a cap and decent detail and Neptune's disk easy to see. Thanks for the post I would have missed it. David


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#23 Jeff B

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Posted 07 December 2018 - 11:02 PM

Not to change the subject but Uranus is very well placed for observing right now too.

 

A lot of fun tonight seeing comet 46P , Uranus and the surprise treat of the Mars & Neptune Show.

 

Jeff



#24 JOEinCO

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Posted 07 December 2018 - 11:03 PM

Just came in.  

 

I really like it when objects present themselves so we get some sense (however meager) of scale.  If my math is right, the light took 10 minutes to get to my eye from Mars. That amazing, perfect-blue coming from Neptune took 4-1/2 hours.  Right there together, yet that wee blue disc is moving in it's arc SO far behind the orange disc. Love it!

 

Capped off the session with some Comet 46P time.  It's also been fun watching that take jumps northward when the clouds break every day or three.



#25 Jim1804

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Posted 07 December 2018 - 11:47 PM

Last night, clouded out. Tonight - clouds were closing in from all sides - but there was Mars shining bright(ish) in the SW - some guerrilla astronomy with my C90 and a 25mm Plossl. Lots of tube currents, since the threatening clouds didn’t allow time for acclimation.
But there it was - bright boiling Mars and small, very blue, almost stellar Neptune. Not one of those “oh wow” moments - until you realize what you’re seeing and how long it will be before it happens again. Shared the view with the wife and kids - not too impressed with the view, but they thought the rarity of it was cool.
And just like that the clouds closed in. Glad to have seen it - yet something else I would have missed had I needed to set up a bigger scope.


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