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Posts Made By: Anthony Wesley

March 3, 2010 08:27 AM Forum: CCD Imaging and Processing/Solar System

Mars and Saturn, March 2

Posted By Anthony Wesley
Here are a couple of images from last night - Mars in pretty good seeing (for the low altitude) and Saturn a few hours later also in pretty good seeing.

This mars imags is IR(742nm) / G / B.

cheers, Anthony

March 23, 2010 05:00 AM Forum: CCD Imaging and Processing/Solar System

saturn, March 22 + Titan + Storm

Posted By Anthony Wesley
Hi All,

Here is an image from this morning at 1am local time (transit time) showing Saturn, titan and the current large storm system in the southern hemisphere.

1400 frames stacked per channel out of 2500, 14.5" Royce conical mirror

cheers, Anthony

March 26, 2010 03:56 AM Forum: CCD Imaging and Processing/Solar System

Saturn, 25th March, good seeing

Posted By Anthony Wesley
Here are some images taken last night in very good seeing...

Image #1

June 15, 2005 09:40 PM Forum: CCD Imaging and Processing/Solar System

ToUcam question

Posted By Anthony Wesley
John, I have seen this effect on a different camera - a firewire ccd camera using the same sensor - and was told by the manufacturer that it's caused by the dc reference voltage used in the A to D stage drooping when data is sent over the bus to the host pc.

Most likely it's a power supply problem, as suggested by the other poster.

regards, Anthony

June 21, 2005 10:07 PM Forum: CCD Imaging and Processing/Solar System

New 16 bit Atik cameras!!

Posted By Anthony Wesley
Mike Wirths said:

Hi all,

Just noticed that the new 16 bit cameras have been announced at Atik intruments.
http://www.atik-instruments.com
The one model ATK-16 has a ccd array 752x582 8.6x8.3 micron pixels. Its based on the Sony ICX-429ALL ExView CCD. The lowest shutter speed though is 1/1000th! So maybe too fast for lunar/planetary? Any of the techies out there have an opinion as to the usefulness of this new camera to us?

--Mike Wirths

Mike - I think they mean that the *fastest* shutter speed is 1/1000 second. They list the maximum shutter as "unlimited" which I guess means something like 1000 seconds or more (just a guess).

Two things will determine whether this camera is useful for planetary work, and these are the two things where most camera makers fall down:

- flexible exposure & framerate selection, with the shutter disabled. i.e. exposures selectable from 10ms up to 80ms in small steps (say 1ms) with the framerate automaticlly adjusting to 1/exp (up to a maximum of, say, 40fps) and the camera integrating light for the full length of each frame.

- real usb2 or firewire data rates to support framerates up to 40fps at full frame resolution.

There are very few cameras on the market that meet these 2 criteria, but these criteria almost define a good planetary camera. That's one of the reasons the Lumenera LU075 is a nice camera, I think it meets these 2 items.

regards, Bird

June 24, 2005 12:44 AM Forum: CCD Imaging and Processing/Solar System

Morning Mars June 23 2005

Posted By Anthony Wesley
That's a great image Wes! I notice you have a dark area in the polar cap - I saw this also a couple of weeks ago in one of my images.

Is there a consensus on whether this is a real feature?

regards, Anthony

June 25, 2005 01:16 AM Forum: CCD Imaging and Processing/Solar System

Lumenera Camera using Registax. Please Help

Posted By Anthony Wesley
I'd reccommend that you use virtualdub to split your AVI out into individual frames (BMP files) and then use Windows select-drag-drop to select these files and drag-drop them into registax.

This seems to be the most reliable way of loading data, and avoids many limits such as the avi filesize. I've successfully used this method to drag n drop about 10,000 files in one go, and I've been doing it this way for the last couple of years and never had a crash like you mentioned above. I've seen many other people report crashes when loading AVI's.

I think this process is much simpler for Registax to handle.

I hope you have a lot of spare disk space :-) Virtualdub is free, just google for it.

Alternately, if you can, capture your original data into separate frames to start with, and then you can avoid these conversion steps altogether. That's what I do, even though it burns up disk space like you would not believe :-)

regards, Anthony

July 6, 2005 06:27 AM Forum: CCD Imaging and Processing/Solar System

Mars and my last Jupiter of this season

Posted By Anthony Wesley
Paul Maxson said:

Hi all,

Here is likely my last Jupiter of this season and an image of Mars. Seeing was not good for either image. Can you believe that in a couple of months, Saturn starts to become observable again!!

Jupiter:
http://tinyurl.com/c4nw5

Mars:
http://tinyurl.com/b2kgr

Thanks for looking!
Paul Maxson
http://glory.gc.maricopa.edu/~pmaxson/index.htm

Good images Paul!

I'm waiting on Saturn to come back into the pre-dawn sky, since that's where I do all my imaging. In Canberra it's a waste of time trying to image anything before midnight :-)

regards, Anthony

July 18, 2005 10:34 AM Forum: CCD Imaging and Processing/Solar System

LU075/LU165 and streampix question

Posted By Anthony Wesley
Thanks to Paolo I have it solved. I had to "reset" Streampix to factory defaults.

I had earlier been using the LU165C colour camera, and it seems that Streampix has a bug where it stays stuck on colour until you reset it.

regards, Anthony

July 21, 2005 02:05 AM Forum: CCD Imaging and Processing/Solar System

DMK 31BF03 1024x768 arrived

Posted By Anthony Wesley
This camera uses the ICX204AL ccd, with 4.65u pixels and high sensitivity it makes a good candidate for astronomy. My only question would be about the framerate - 15fps is not really high enough for planetary work, there you would want 30, 40 or even 50fps. Can this camera get to those framerates with the region-of-interest feature, say restricting the field to 400x400 pixels?

regards, Anthony

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