An attempt to film Jupiter (5D2 + 12.8 meter Sigmonster)

ljfinger said:

Lee Jay said:

Thanks, LJ. I think I should've shot the second clip at ISO 6400 (instead of ISO 12.8H), 1/30 sec, f/128 at the same 12.8 meters focal length. This should have reduced the noise to manageable levels. Seems detail will still be ok even if I underexpose 1 stop. I'll retake the shot soonest and send you some frames for stacking.

Click to expand...

Okay. Try to get as many frames as possible. I usually use about 3 minutes of video. You can't do that because you don't have tracking, but get as much as you can.

Click to expand...

oldschool said:

That was very impressive, But don't you need some kind of a special permit to own that many teleconverters?

Click to expand...

Jackson22 said:

finding jupiter in a minute small angle of view is already a real task indeed. thanks romy for posting.

Click to expand...

Jackson22 said:

in a different topic, did you notice 7d having a tendency to misfocus to an obstruction that suddenly appear in front of your original target when in ai servo w/ c fn iii were set to preserve focus at hand. i always agree & treasure your valuable inputs. when you have the chance, pls see my thread about my issue with my new 4 day old 7d

http://forums.dpreview.com/forums/read.asp?forum=1019&message=33639396

any input will be highly appreciated.

Click to expand...

liquidstone said:

I should've shot this when the production 7D was loaned to me for a week. I might probably use "only" 8x TCs (3 TCs @ 2x TC) to get the job done.

Paul Feng said:

Very nice Romy... it will be interesting to see what you can do with the crop factor of a 7D (although with the high ISOs involved, I suppose it may not be a given that the 7D will do better than the 5DII in this application).

And, while we're trying to maximize the size of the image, Jupiter will next be at opposition (closest approach, when the Sun and Jupiter are on opposite sides of the Earth) next September, which gives plenty of time to get your technique down pat.

My 7D arrives tomorrow; hopefully I get a good one, and hopefully the sky is clear later this month when I have some decent ISS opportunities.

Click to expand...

--
Romy



PHILIPPINE WILD BIRDS
Photo Gallery - http://www.pbase.com/liquidstone
HD Bird Videos - http://exposureroom.com/members/RomyOcon.aspx/videos/

(Over 250 species captured in habitat, and counting.)

Click to expand...

liquidstone said:

José B said:

or video clips there

Great work as always.

Click to expand...

Thanks, Jose!

BTW, looks like you're having fun with your 7D. I'm still on the fence.... waiting if some new FW and/or RAW converter (perhaps the post-beta release of ACR) can mitigate the shadow noise at ISO 200 - 800. The AF of the new camera rocks at BIFs, and I can finally retire my 1D2 once I get comfortable with the 7D's noise.

--
Romy



PHILIPPINE WILD BIRDS
Photo Gallery - http://www.pbase.com/liquidstone
HD Bird Videos - http://exposureroom.com/members/RomyOcon.aspx/videos/

(Over 250 species captured in habitat, and counting.)

Click to expand...

liquidstone said:

What video format does Registax prefer? The 5D2 footage is of course in QT H.264, but I've to cut the end portions anyway (to reduce file size), so I might as well render it to the video file format that works well with the stacking software.

Click to expand...

liquidstone said:

Jackson22 said:

finding jupiter in a minute small angle of view is already a real task indeed. thanks romy for posting.

Click to expand...

Thanks!

liquidstone said:

in a different topic, did you notice 7d having a tendency to misfocus to an obstruction that suddenly appear in front of your original target when in ai servo w/ c fn iii were set to preserve focus at hand. i always agree & treasure your valuable inputs. when you have the chance, pls see my thread about my issue with my new 4 day old 7d

http://forums.dpreview.com/forums/read.asp?forum=1019&message=33639396

any input will be highly appreciated.

Click to expand...

I see that you have already set the tracking sensitivity to slowest, which is the setting I'd use when obstructions get in the way. The only other setting that I'd suggest is to use single point AF, as the expansion points cover a large area and can be easily distacted by obstructions. I'd imagine that even spot AF will work well in this case, since the subjects are large in the frame and quite contrasty, and their motion vector is more predictable than say BIFs. Such AF will be even more discriminating with its smaller AF area.

--
Romy



PHILIPPINE WILD BIRDS
Photo Gallery - http://www.pbase.com/liquidstone
HD Bird Videos - http://exposureroom.com/members/RomyOcon.aspx/videos/

(Over 250 species captured in habitat, and counting.)

Click to expand...

ljfinger said:

liquidstone said:

What video format does Registax prefer? The 5D2 footage is of course in QT H.264, but I've to cut the end portions anyway (to reduce file size), so I might as well render it to the video file format that works well with the stacking software.

Click to expand...

AVIs: http://www.astronomie.be/registax/aviformats.html

and limited MPEGs: http://www.astronomie.be/registax/previewv5-0.html

MJPEGs in an AVI are probably the best, but the biggest.

Click to expand...

liquidstone said:

Here's a single still exposure taken before I filmed the originally posted footage. I could see the three brighter moons in the viewfinder, but I couldn't see the fourth one (the faint dot right below Jupiter) with my eye at the VF before the shot. Not sure if that one is a moon, or a shooting artifact (noise or dead/hot pixel).

Click to expand...

ljfinger said:

liquidstone said:

Here's a single still exposure taken before I filmed the originally posted footage. I could see the three brighter moons in the viewfinder, but I couldn't see the fourth one (the faint dot right below Jupiter) with my eye at the VF before the shot. Not sure if that one is a moon, or a shooting artifact (noise or dead/hot pixel).

Click to expand...

It's Callisto. Really nice shot!

Enter the time of the shot in here to see:

http://www.shallowsky.com/jupiter/

--
Lee Jay
(see profile for equipment)

Click to expand...

liquidstone said:

Thanks for the link, LJ!

Looks like the moon IDs are as follows (top to bottom), right?

1. Europa
2. Io
3. Callisto
4. Ganyemede

Click to expand...

tknterry said:

Great image of Jupiter and a few of its moons
--
---Terry



http://www.wildworldphoto.net

Click to expand...

Brit said:

I was wondering about the 7D too…

Have you thought about trying out Saturn - and more extreme TC stacking?

Brit

Click to expand...

ljfinger said:

If you want to see just how good good can get with backyard equipment of more-or-less reasonable cost, check this out:

http://www.cloudynights.com/ubbthreads/showflat.php?Cat=&Board=Imaging&Number=3310997&Forum=,,,f57,,,&Words=ganymede&Searchpage=3&Limit=25&Main=3310997&Search=true&where=bodysub&Name=&daterange=1&newerval=&newertype=&olderval=&oldertype=&bodyprev=#Post3310997

That's right, he's got hits of surface features on the moons of Jupiter with a scope that costs around the same as the Sigmonster!!!

Click to expand...