Jeff and Dave. This camera really does not have antiblooming so that saturated that star in under two minutes.
Aubrey On Apr 26, 2018 1:19 PM, Astrophotography <
astrophotography@centexastronomy.org> wrote:
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> Jeff : I think that camera maybe does not have anti-blooming feature.
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> Dave
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> ---------- Original Message ----------
> From: "Astrophotography" <
astrophotography@centexastronomy.org>
> To: "
jde209@netzero.net" <
jde209@netzero.net>
> Subject: re: M92 with the PIXIS loaner <<$195526129359$>>
> Date: Thu, 26 Apr 2018 09:36:15 -0500
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> Willie,
> Were the exposures on the Club scope?
> There is one anomaly in the image. The bright star bottom center, HD 168521, has a downward spike that only appears on the Luminance exposure. It is not unlike the spike that appears if the scope is bumped during an exposure, but only shows on that star. That singularity may be because HD 168521 is by far the brightest in the image.
> I bring this up because if you used the observatory scope a “bump” is unlikely and it may be an indication of something else.
> For whatever it is worth, the images were pretty clean with only a minimal number of warm pixels and not too noisy for the limited number of stacked exposures. I processed the image using Nebulosity 4 and eliminated the warm pixels using the Adaptive Median Nose Reduction feature in that app. I then fine-tuned the color and contrast using Lightroom 5.
> Jeff
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> On Apr 23, 2018, at 8:34 AM, Astrophotography <
astrophotography@centexastronomy.org> wrote:
> I am providing 4 files for anyone who would like to process them. I would like to see what these produce but dont have the chance to try them myself. These are 60s x 3 LRGB using the loaner PIXIS camera from Princeton Instruments, binned 1x1.
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> Conditions were pretty good early this morning, but the last few images were near twilight. I calibrated the images with bias, darks & flats, aligned them and median combined them for these 4 masters.
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> The files can be found at this link.
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https://app.box.com/s/k30p0wr6h6xgh1h83f74o9fbzqk9dsj5 >
> Willie
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