NGC 7000 One-Shot Color vs. RGB

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Dennis Persyk - 28 Nov 2004 16:16 GMT

I am fortunate to have on loan to me two StarlightXpress cameras, the
SXV-H9 and SXV-H9C. They are identical except that the H9 is
monochrome and the H9C is one-shot color. I have been experimenting
with both on the same scope/piggyback camera lens and targets.

On my New Images page I illustrate the images I obtained with the two
cameras using a $40 used Pentax 50 mm lens at f/5.6. One is one-shot
color, the other is RGB, Take a look at the comparison images and draw
your own conclusions.

Comparison images at
http://home.att.net/~dpersyk/new.htm

My sincere thanks to Jeff Terry http://mrmac.mr.aps.anl.gov/~astronut/
for the loan of the cameras and for initial processing the H9C image
with his custom Mac software http://www.iccd.us/ .

Thank you for visiting my site. Feedback always welcomed.

Clear skies,

Dennis Persyk
Igloo Observatory Home Page http://dpersyk.home.att.net
Hampshire, IL

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John Hyde - 29 Nov 2004 04:14 GMT

> I am fortunate to have on loan to me two StarlightXpress cameras, the
> SXV-H9 and SXV-H9C. They are identical except that the H9 is
[quoted text clipped - 20 lines]
> Igloo Observatory Home Page http://dpersyk.home.att.net
> Hampshire, IL

Nice Pictures.

Do you know much about these cameras? I've a question for someone with
"hands on" experience. I understand that the Starlight express line has
anti-blooming as a feature and are therefore non-linear; a problem if
you want to yse the camera for research purposes. (eg. variable star
observing) Can the anti-blooming be turned off?

Just wondering if you know.

Regards,
John

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Dennis Persyk - 29 Nov 2004 16:53 GMT

Hello John,

I cyberfriend of mine in Australia uses his MX716 for astrometry and
has made extensive measurements on the linearity. The SX cameras are
linear to about 75% of well depth for critical astrometry. I can
supply you with his email address if you contact me via email.

Clear skies,

Dennis

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Space Forum / Astronomy / November 2004

NGC 7000 One-Shot Color vs. RGB