Posts Made By: Alan Friedman

Jim -

A beautiful lunar journey!

Alan

Hi Wes -

I don't know where this is but it is very beautiful nonetheless!

Alan

I was able to catch some nice video of the event. Will take me a while to prepare the color images - here is a quick look through the red filter twenty minutes or so before ingress. I'll post a copy of the final color image when finished.

cheers -
Alan

Hi Chris -

I really like how you've processed this image - a superb result!

Your C8 image from June 1 is very good too. I imaged the exact same rotation position on May 31st as Ganymede was preparing to transit. Your image shows better resolution and will make a great reference for me as I process the RGB files.

best,
Alan

Thanks for the very interesting discussion.

The color Lumenera seems like a great camera - unfortunately my current Mac laptop does not have USB 2.0, nor is there a software choice at the moment to drive the camera in Mac OS. Fortunately the excellent webcam operation program Astro IIDC for Mac OS will operate all the DMK cameras. The firewire cameras that I have used do not require a separate power source other than the power supplied through the firewire cable. BTW, Apple makes it's own thin and flexible firewire cable which is a great upgrade from the usual thick rigid cables.

Funny thing - for this apparition of Jupiter the only way i have been able to capture decent images from my location (we kiss the air here when seeing is 6/10) has been with LRGB process, relying mostly on the red filtered images for luminance. I have settled on an exposure of 60ms which requires a download speed of 15fps. Even at this slow shutter and frame rate I have many more usable frames in red than in white light, despite the full spectrum advantage of faster shutter and download speeds.

Alan

Hi Roland -

I think it is superb seeing that let this resolution be realized.

In RGB Jupiter images from my location, the image is far more affected by seeing conditions in the blue than in the red with the green somewhere in between. I have not yet had an experience where the blue image did not serve to reduce the resolution of the final Jupiter image when I try to incorporate it into the luminance information.

This may be one reason why we are not seeing a big migration from Barbados to Buffalo?

Alan

Hi Paul -

Nice work! I was able to catch the Ganymede transit a little earlier in the evening - though the seeing declined just as the moon passed in front of the planet.

cheers-
Alan

Hi Wes -

It is always a pleasure to see your images - even the second string players
The resolution is extraordinary.

Alan

Hi Paul -

Nice sequence of images! I missed seeing this - thanks for sharing it.

Alan

Hi Ed -

A good result despite the conditions. The forcast here was for good seeing Saturday night but I had scheduled a public night viewing of Jupiter at our Science Museum. We had hundreds of folks turn out - I never got a long enough look to see whether the seeing was good or not!

Alan