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Jupiter

stoneill · 2011-09-30 19:01:39

Last night was ideal conditions to view Jupiter, tonight is well, less than adequate. at 19:54 - Jupiter will be just rising above the horizon at ENE. Pity the night is so ****e - would be good to have a look at it tonight.

30-09-2011 08:01PM

#1
stoneill

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Last night was ideal conditions to view Jupiter, tonight is well, less than adequate.
at 19:54 - Jupiter will be just rising above the horizon at ENE.
Pity the night is so ****e - would be good to have a look at it tonight.

Tagged:

jupiter

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#2 30-09-2011 09:54PM

ScrubsfanChris

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Except if you live in the south, where its been raining all week

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#3 14-10-2011 11:15AM

bc dub

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Saw Jupiter last night, first time ever to see/realise what it was.

Can anyone tell me is it true that to the naked eye it appears to wobble a couple of milameters? I could have sworn it was moving. My friend told me that due to it's distance to the eye, certain rays impact how you see it and give it a shaky look.

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#4 14-10-2011 03:07PM

novarock

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Took this last night, it really was stunningly bright..

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#5 14-10-2011 03:52PM

Iancar29

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My one from the phoenix park last night

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#6 14-10-2011 04:10PM

macpac26

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wow some nice photos lads. Finished college at 10 last night and the sky was clear got a great view of it. Stunning really. Ive got to invest in a telescope..

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#7 14-10-2011 04:15PM

Eramen

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Beautiful photos. Jupiter really was impressive last night, I hope we get more such pristine nights for observing it.

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#8 14-10-2011 04:45PM

SuprSi

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Wow, I thought that was the moon last night. It was really bright over here. Clear skies tonight so hopefully I'll get another look at it.

Any reason why it is so bright? It's way further out than the moon and although it's significantly bigger, surely its distance would mean the light coming back wouldn't be as strong?

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#9 14-10-2011 04:55PM

Fowler87

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Some great pics Shame it was pissing in Mayo last night to see anything

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#10 14-10-2011 04:56PM

coylemj

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SuprSi wrote: »

Wow, I thought that was the moon last night. It was really bright over here. Clear skies tonight so hopefully I'll get another look at it.

Any reason why it is so bright? It's way further out than the moon and although it's significantly bigger, surely its distance would mean the light coming back wouldn't be as strong?

You make a valid point, Jupiter's relative brightness as seen from Earth is helped by the fact that it's albedo (reflectivity) is 0.5 vs. 0.12 for the Moon.

So if Jupiter was made of the same material as the Moon it would be four times dimmer. As a gas giant it reflects back 4x more sunlight per unit of surface area than the Moon.

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#11 14-10-2011 06:54PM

WalterMitty

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Was in dublin city centre last night and the moon and jupiter were right above the spire when looking down mary street and henry street . Amesome, the juxtoposition of the terrestrial and the extra terrestrial.

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#12 14-10-2011 10:27PM

Gumbo

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Assuming jupiter is the star beside the Moon?

bought a new camera a few weeks ago, and still trying to get used to some settings, but hers mine from last night.

IMG_0368 by kceire, on Flickr

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#13 14-10-2011 10:35PM

Penfailed

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Iancar29 wrote: »

My one from the phoenix park last night

Very cool pic! It was cloudy here last night...:(

Gigs '24 - Ben Ottewell and Ian Ball (Gomez), The Jesus & Mary Chain, The Smashing Pumpkins/Weezer, Pearl Jam, Green Day, Stendhal Festival, Forest Fest, Electric Picnic, Pixies, Ride, Therapy?, Public Service Broadcasting, IDLES, And So I Watch You From Afar
Gigs '25 - Spiritualized, Supergrass, Stendhal Festival, Forest Fest, Queens of the Stone Age, Electric Picnic, Vantastival

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#14 14-10-2011 11:40PM

bc dub

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My effort...

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#15 14-10-2011 11:48PM

Calibos

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I don't mean to be critical but You know thats not in focus right?

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#16 15-10-2011 12:16AM

bc dub

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Its an effort at capturing it, not an entry to a competition.

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#17 16-10-2011 03:20PM

peterako

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Just to follow on on the 'not focused' comment....

If you look at the bottom right corner of teh shot below you'll see one of Jupiter's moons......

You'll also see that there are a number of concentric circles aroudn the moon.

You can use this moon (for example) to get near perfect focus....

Just focus the scope till the moon appears as a dot rather than concentric circles and Jupiter will be pretty much in good focus

You can then adjust gain etc on the camera and get nice (in focus) views/shots of Jupiter!

bc dub wrote: »

My effort...

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#18 16-10-2011 09:23PM

Calibos

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peterako wrote: »

Just to follow on on the 'not focused' comment....

If you look at the bottom right corner of teh shot below you'll see one of Jupiter's moons......

You'll also see that there are a number of concentric circles aroudn the moon.

You can use this moon (for example) to get near perfect focus....

Just focus the scope till the moon appears as a dot rather than concentric circles and Jupiter will be pretty much in good focus

You can then adjust gain etc on the camera and get nice (in focus) views/shots of Jupiter!

I thought this was a photo of 'The Moon' and Jupiter rather than Jupiter and on of 'its moons'??

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#19 17-10-2011 02:43AM

emo72

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I'm now officially confused

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#20 17-10-2011 08:22AM

peterako

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I really shouldn't stay up late unsupervised

Yep....the dot is Jupiter.

Sorry for the confusion....totally due to my stupidity....

For some reason (possibly cause I was taking some captures of Jupiter on Saturday night) I got mixed up in the thread.

My shots from Saturday (Need further procsesing when I have time):

Dot on top band is the shadow of one of Jupiter's moons. Splodge on the lower part is the GRS.

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#21 17-10-2011 11:34AM

macpac26

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Wow great photos peter. what equipment you use to get those shots?

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#22 17-10-2011 02:17PM

peterako

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PM sent so that I don't hijack the thread

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#23 17-10-2011 11:23PM

slade_x

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peterako wrote: »

PM sent so that I don't hijack the thread

I dont see how it would be considered hijacking as the topic of discussion is about observing jupiter

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#24 18-10-2011 08:05AM

peterako

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Thanks slade_x,

Equipment used:

Orion Optics Europa F4 200 (A UK mirrored 8" newtonian) with a Crayford focusser.
Celestron CG-5 EQ mount with drive on RA for tracking.
Revelation (GSO) 2.5x Barlow
Philips SPC900NC webcamera for capture.
wxAstroCapture as capture software
Registax 6 postprocessing

Rubber ball to throw for the dog to stop him knocking his tail against the mount while I was capturing the images......

I know there's more detail inthe captures to extratct, and that teh scope was not sufficiently cooled.

Hoping for a nice clear Winter (at night anyway ),

Clear skies,
Peter

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#25 18-10-2011 11:06AM

Rubecula

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Just wait until you get a decent shot of Saturn. That is a lovely sight.

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#26 18-10-2011 12:03PM

peterako

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My best Saturns thus far.

Was such a poor year for (me for) viewing and capturing Saturn

But...Jupiter's here and Mars will be up at a reasonable time soon too!

Will try and get a look at Uranus one of these nights.......

Quick rework of the captures with an earlier version of Registax:

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#27 18-10-2011 10:05PM

premiercounty

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Hi all,

Saw this thread and thought Id post up my effort from last night

equipment used

Meade Etx 70at
Phillips spc900nc web cam
wxastrocapture software for capture
registax 5 processing

This was my very first astrophotography effort, Im quite pleased with it:D I found out what equipment and software to use from online forums etc.

I also have a meade lx200 8 inch SCT with tracking
which Im hoping to get time and clear skies to use, Id like to get detail like your photos there peter.

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#28 19-10-2011 09:42AM

peterako

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Nicely focused! And gives a great perspective on the moons around Jupiter!

You should get at least as good pics as I have with the SCT if not better

I feel scope envy.....

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#29 21-10-2011 08:42AM

saltie

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Calibos wrote: »

I don't mean to be critical but You know thats not in focus right?

Jesus harsh. I think thats an excellent pic

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#30 22-10-2011 04:03PM

Calibos

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saltie wrote: »

Jesus harsh. I think thats an excellent pic

Eh, I wasn't trying to be harsh, I don't think I was harsh. The reason I posted my comment was due to the fact that it seems that the OP and now you too don't quite realise how out of focus the photo is.

This is a photo of the Earths moon and the planet Jupiter. It is not a photo of the planet Jupiter and one of is Gallilean moons like Ganymede which is what Peterako thought. If it were a photo of Jupiter and Ganymede it would be one of the best astrophotos of ganymede taken by an amatuer on earth.

Seeing as its a photo of our Moon and the planet jupiter I know its out of focus because at the focal length the picture was taken with the Moon the size it is in the photo, Jupiter would not be a disc that size. It should still look like a bright star near the moon in the photo.

In other words while the OP thought he photographed detail on the disc of Jupiter he was infact way out of focus. If you look closely at the 'Disc' of Jupiter you can see his Newtonian telescopes Spider vanes. A sure sign that the starlike point of Jupiter at that image scale is grossly out of focus.

Here is a photo showing Jupiters disc compared to the moon at the bottom of the page.

http://www.sas.org.au/astrophotography/renato/renato.htm

There is a difference between being pedantic and just nitpicking faults in something and pointing out a false assumption.

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#31 22-10-2011 04:37PM

3ndahalfof6

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Calibos wrote: »

Eh, I wasn't trying to be harsh, I don't think I was harsh. The reason I posted my comment was due to the fact that it seems that the OP and now you too don't quite realise how out of focus the photo is.

This is a photo of the Earths moon and the planet Jupiter. It is not a photo of the planet Jupiter and one of is Gallilean moons like Ganymede which is what Peterako thought. If it were a photo of Jupiter and Ganymede it would be one of the best astrophotos of ganymede taken by an amatuer on earth.

Seeing as its a photo of our Moon and the planet jupiter I know its out of focus because at the focal length the picture was taken with the Moon the size it is in the photo, Jupiter would not be a disc that size. It should still look like a bright star near the moon in the photo.

In other words while the OP thought he photographed detail on the disc of Jupiter he was infact way out of focus. If you look closely at the 'Disc' of Jupiter you can see his Newtonian telescopes Spider vanes. A sure sign that the starlike point of Jupiter at that image scale is grossly out of focus.

Here is a photo showing Jupiters disc compared to the moon at the bottom of the page.

http://www.sas.org.au/astrophotography/renato/renato.htm

There is a difference between being pedantic and just nitpicking faults in something and pointing out a false assumption.

I think if you had posted the explanation on the 1st post there would be no misunderstanding, very well explained and teaching us a lot about it, so thank you good reading.

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