AR2394 Variations

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AR2394 variations
Taken by Bill Hrudey on August 3, 2015 @ Cayman Islands

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Still attempting to get a decent image of AR2394 in white light. Observing conditions were better today which helped. The following images are variations in post-processing to see subtle differences. TS 115 mm APO triplet; Baader wedge; ASI120MM; 3X Barlow; FireCapture 2.3; Registax 6; PSP7. East/West not reversed. Best viewed in enlarged window with dark background.

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Hi my friend,
Please acknowledge that your image is a bit too much processed ;-)
OK ?
Is the ASI120MM shooting at 120 frames per second ? I dont know.
Which is the pixel size of this camera ?
Bernard.

Posted by astrofrenchy 2015-08-03 15:20:06

Hi Bernard;

Yes, you are absolutely correct regarding processing. It was part of an exercise to explore enhancement options to compensate for limitations in raw image quality. Did you like it ? ;

Posted by whrudey 2015-08-03 18:37:06

Hi Bernard;

Somehow, the first attempt to post a reply was truncated - heres the complete post:

Yes, you are absolutely correct regarding processing. It was part of an exercise to explore enhancement options to compensate for limitations in raw image quality. Did you like it ? ;

Posted by whrudey 2015-08-03 18:40:02

Hi Bernard;

Yes, you are absolutely correct regarding processing. It was part of an exercise to explore enhancement options to compensate for limitations in raw image quality. Did you like it ? ;

Posted by whrudey 2015-08-03 18:40:31

The reply was still incomplete - Ill try again with this one:
Hi Bernard;
Yes, you are absolutely correct regarding processing. It was part of an exercise to explore enhancement options to compensate for limitations in raw image quality. Did you like it ? ;

Posted by whrudey 2015-08-03 18:42:27

Hi Bernard;

I think the reason the former posts failed was due to an emoticon after the second sentence. Will try again no without it.

Yes, you are absolutely correct regarding processing. It was part of an exercise to explore enhancement options to compensate for limitations in raw image quality. Did you like it ?

The ASI120MM uses a CMOS sensor with a 1280 x 960 array of 3.75 um pixels. At full resolution, I can get up to 35 fps. Its a great little device at a reasonable price but does suffer from Newtons rings in hydrogen alpha when using a Barlow. I do have a DMK41 CCD but its quite slow on capture and doesnt always run well with FireCapture 2.3.

I dont have a SSM - rather I use my OEB (aka Old Eye Balls) which have certain limitations.

Do appreciate your comments.

Cheers,

Bill ;

Posted by whrudey 2015-08-03 18:44:59

Ah OK for the ASI120MM ! It looks like the sensor of the Basler 1300-30 (1280x960 @3.75um).
For the Newtons rings I have the same issue with a Daystar Quark which includes a barlow 4.3x
An expert told me I had to make a plate to slightly tilt the camera and that was the solution to eliminate them. Ill have to try that...
For the DMK41, yes it is limited by the 20fps maximum rate. You should try to use their software IC Capture. It works quite well...
Cheers.

Posted by astrofrenchy 2015-08-04 21:48:11

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