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Old 23-04-2006, 11:21 AM
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Lester
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First Jupiter, neximage

22 april took my first images with Neximager. Mounted at prime focus on Meade 14" SCT. Imaged at 30 f.p.s for 1 minute. Seeing was good.

Comments welcome.
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Last edited by Lester; 23-04-2006 at 12:01 PM.
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Old 23-04-2006, 11:29 AM
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asimov (John)
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At 30 FPS Lester? Theres no image here as yet to look at...
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Old 23-04-2006, 11:37 AM
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Sorry haven't been able to attach photo, been trying for ages. Its a Bitmap Image and size= 900KB
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Old 23-04-2006, 11:38 AM
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Striker (Tony)
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I also would like to see 30fps....has anyone taken this frame rate here before.
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Old 23-04-2006, 11:40 AM
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heheh 900kb...download infranview and turn it into a jpeg...limit for forum is 150KB...900 is way over.

http://www.irfanview.com/
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Old 23-04-2006, 11:40 AM
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Lester you will need to convert to Jpeg and reduce to under 150kb to post
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Old 23-04-2006, 11:47 AM
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Trying to post image of Jupiter
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Old 23-04-2006, 12:08 PM
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Thanks for jumping to my rescue the edited post at the beginning has image that can be enlarged. Still new to this.

Oh look at the time, and I haven't fed the pigs yet (joy of being a farmer)
I will go feed the pigs, will be back in 30 minutes.
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Old 23-04-2006, 12:15 PM
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Have fun with the pigs lester. They wouldn't happen to be Jpigs would they
See that tessellation/checkerboard pattern in you image, the most likely cause of that is compression. Try a slower fps,like 15 or 10 fps and adjust your exposure, gain, gamma etc based on those frame rates and see how you go.
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Old 23-04-2006, 12:26 PM
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Good one Paul! Jpigs!

Yes, all Lesters pigs names start with a J. We have jimmy-pig, James-pig, jack-pig......& not to mention that lil' terror Johnny-pig!
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Old 23-04-2006, 12:31 PM
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Rolling on floor laughing here! HELP!

& then we have julie-pig, Janet-pig..............

Ok, sorry 'bout all that! Compose yourself Asi!.......Yes, nice image Lester! Yup, lower the rate to 15 FPS maximum I reckon.
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Old 23-04-2006, 12:58 PM
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Thanks for responce, will try lower f.p.s.

Pigs will be glad to know that they have made the www
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Old 24-04-2006, 08:34 AM
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Hi Lester, great start and nice shadow transit action.

I'd be really interested to see what you can do with the Meade 14 with a barlow in place - you need at least F20 on Jupiter to really do it justice. As the guys say lower the frame rate, prob 10fps is optimum. You can cature for 90 sec max without smearing so you should have 900 frames to work with. If you stack say your best 300 should be a good start.

You might want to check too what your video format size is set to. I think with my neximage it defaulted to a 2x 2pixel 320 x240 frame and I got the sort of blocky pattern that your image shows. I now use 640 x480 all the time - uses more memory of course, but better images.

cheers,
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Old 24-04-2006, 08:39 AM
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iceman (Mike)
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Great first start Lester, but if Robert didn't beat me to it I'd recommend exactly what he says.

Use 5fps in GREAT seeing, otherwise use 10fps. It reduces compression. At 30fps, it's compressing the data horribly to shove it down the pipe fast enough, which I think is the cause of the artifacts visible on your image.

How did you process it? (registax, etc)? How many frames did you stack?
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Old 24-04-2006, 09:20 AM
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well done lester.
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Old 24-04-2006, 09:27 AM
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good stuff lester
i'd be stoked if i could get that
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  #17  
Old 24-04-2006, 11:58 AM
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You've got to be happy with that for a first image!
Well done.
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