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Neptune and Triton

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#1 optinuke

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Posted 17 August 2014 - 01:04 PM

Last night I imaged Neptune with a C14 at f/11, primarily just for position relative to background stars.  On the subs I noticed a "star" next to the burned-out image of Neptune.  This morning I checked the POSS prints and ephemeris.  The "star" is in the corrrect location for Triton, and there are no background stars that bright at that location.

 

In the image, Neptune is the brightest object and Triton is to its upper right.  North is up. I didn't do too much processing on the image.

 

Triton should be well placed tonight also.

 

Jay

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#2 David Knisely

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Posted 17 August 2014 - 01:08 PM

Visually, I find Triton is often a little easier to see than the moons of Uranus.  It is kind of fun to track it down.  Clear skies to you.



#3 optinuke

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Posted 18 August 2014 - 02:21 PM

David,

 

Thanks for the visual note.  Last night I imaged Neptune/Triton again.  It was the last object, so after pulling the camera I stuck in an eyepiece and took a look.

 

At 444x (8.8mm eyepiece), I was able to hold Triton continuously with averted vision.  It was easier to see than fainter Pluto, even with relatively bright Neptune close by.

 

Jay



#4 azure1961p

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Posted 18 August 2014 - 07:54 PM

Jay,

 

Nice report. Ill be checking out Neptune tonight and Triton - a real challenge given the light pollution at my home.  Triton IS my fav outter planet moon . If even say in a way I find it more interesting than Pluto. 

 

Pete



#5 Rick Woods

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Posted 18 August 2014 - 09:25 PM

Jay,

 

Great shot! That's pretty much exactly how it looks in my M14.



#6 E_Look

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Posted 18 August 2014 - 10:16 PM

Lord willing, I'll try for Triton, Neptune, and Uranus tomorrow night, as the forecast is for a clear night here.  But it forecast the same tonight and it was visibly hazy from about 30°-25° down to the roof- and treelines.  Such as it was, even at 63x and 40x Saturn was undulating, so I didn't stay out for the outer two gas giants tonight.  I am soooo jealous of you guys who have that killer combo of big aperture and good seeing!... Eh, not really, just jealous of those with good seeing; I don't want to be in a position to be lugging out parts and setting up for a large aperture scope!



#7 azure1961p

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Posted 18 August 2014 - 10:39 PM

Ed,

 

You didnt miss any great seeing. I'm probably 65 miles from you as the crow flys and the seeing while not bad was poor considering how great summer seeing can be. Stars not too far from zenith - 45 degrees twinkled noticeably.  So anyway don't be jealous!

 

Pete



#8 optinuke

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Posted 19 August 2014 - 12:42 AM

Thanks all.  I've attached the pic from last night, taken 24 hours after the original one posted above.

 

Neptune can be seen to move relative to the stars, and Triton moved relative to Neptune.

 

No pics tonight...it's still monsoon season and clouds moved in.

 

Ed, your comments on lugging out parts and setting up a large scope are well taken and something I knew I had to contend with if I was going to use the C14.

 

A picture of my solution is attached.  Perhaps I'll write something up that is more detailed and post in the Mounts forum.

 

The C14 and 10" LX200 are attached to bases made of a leftover 5" x 12" beam.  I just wheel them out from the garage, align to marks, and plug them in.  It's an easier setup than my 80mm refractor.

 

Jay

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#9 azure1961p

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Posted 19 August 2014 - 08:18 AM

Jay,

 

You know what, if you took a series of images over many nights you could make a very interesting animate.

 

Pete



#10 E_Look

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Posted 19 August 2014 - 02:40 PM

Those are very nice pictures, both of Neptune/Triton and C14/fork/cart!  Very nice wood finish on the carts.



#11 optinuke

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Posted 19 August 2014 - 09:02 PM

Pete, good idea about doing an animation.  It will take a run of at least six clear nights.  I'll attempt it once we get into a drier pattern.  It's not like it takes a lot of exposure time...the first image was one minute and the second four minutes.

 

Ed, I used golden oak on the beams and ebony stain on the plywood, with a poly overcoat.

 

Jay



#12 tigerroach

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Posted 20 August 2014 - 08:55 AM

Cool photos! That must have been exciting when you realized what you had captured.

 

I would like to try for Triton visually - can anyone confirm if 14.5" is enough horsepower to get it, assuming decent seeing conditions?



#13 David Knisely

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Posted 20 August 2014 - 01:07 PM

Cool photos! That must have been exciting when you realized what you had captured.

 

I would like to try for Triton visually - can anyone confirm if 14.5" is enough horsepower to get it, assuming decent seeing conditions?

 

 

I have picked Triton up near its greatest elongation from the planet using my 10 inch f/5.6 Newtonian at my dark sky site.  At magnitude 13.5 or so, it is bright enough that it might be visible in slightly smaller apertures.  Clear skies to you. 


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#14 E_Look

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Posted 20 August 2014 - 01:22 PM

Tigerroach, your 14.5" should make it easy!  I have seen it several times in my 8" Newt.


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#15 azure1961p

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Posted 20 August 2014 - 08:25 PM

I've managed Triton with effort but consistently from my condo which is mag 5 sky's.  Here the limiting magnitude for my scope is not too much beyond that. Maybe 14 if I really try?  Anyway at 450x its routine to spot it under those sky's - just not too easy and at 200x Id probably miss it altogether.   From nice country sky's (6.2v) its faint but steady at 250x.

 

Pete



#16 optinuke

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Posted 20 August 2014 - 10:35 PM

Cool photos! That must have been exciting when you realized what you had captured.

 

I would like to try for Triton visually - can anyone confirm if 14.5" is enough horsepower to get it, assuming decent seeing conditions?

 

Brian,

 

Triton showed up on the 1.2-second subframes when I was positioning Neptune, and when I saw it I suspected it could be Triton, so I was fairly anxious to check an ephemeris and POSS images.  When I confirmed it was Triton, I was quite pleased.

 

I've only had the CCD camera (my first "real" one, a Celestron Nightscape) a few months - hot weather at that - so I'm still discovering what it can do with different optical systems.

 

Visually with the C14, my experince has been similar to Pete's; from my backyard at the edge of Las Vegas, Triton is easiest at higher power (444x), and more difficult at 279x though still visible once you know where it is.  It will also make things easier if you downliad the position of Neptune and Triton so you know where Triton will be relative to Neptune.

 

Good hunting!

 

Jay


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#17 Illinois

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Posted 21 August 2014 - 08:07 AM

Nice picture and nice set up!



#18 HellsKitchen

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Posted 22 August 2014 - 02:37 AM

I have seen Triton with my 8" newt on one night if particularly excellent seeing using 600x.

 

I was observing Neptune last night in decent seeing and caught it at 342x. It was not visible at 240x. Need higher mag to seperate it from Neptunes glare and datken the background sky.


Edited by HellsKitchen, 22 August 2014 - 03:44 AM.


#19 optinuke

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Posted 18 September 2014 - 01:41 PM

FYI,  I just posted a new topic "Neptune-Triton animations" over in Solar System Imaging and Processing.  Per Pete's suggestion, I was able to get twelve sequential nights of images and make a couple animations.

 

Thanks for your comments/suggestions and visual observing impressions.

 

Jay



#20 azure1961p

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Posted 18 September 2014 - 05:22 PM

Post a link! This is terrific what you did .

 

pete



#21 optinuke

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Posted 18 September 2014 - 05:30 PM

Pete, thanks for your suggestions.  I'm still a little new at CN.

 

Here's the link. 

 

http://www.cloudynig...ton-animations/

 

Jay



#22 star drop

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Posted 18 September 2014 - 05:53 PM

Wonderful animations!



#23 Kutno

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Posted 18 September 2014 - 06:42 PM

Nice work, Jay!



#24 E_Look

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Posted 18 September 2014 - 08:31 PM

Great job!  The second animation looks like a shotputter going through his paces!  I really like them all.



#25 payner

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Posted 21 September 2014 - 01:44 PM

Hey Jay (couldn't resist): Thanks for the images of Neptune and Triton. Very nicely done.

 

Best,
Randy







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