Celestron SSAG self-centered and self-autoguided beta test: globular NGC2808 with EdgeHD11 on CGX-L 0.28" / pixel (Freestar8n)

Celestial hemisphere: Southern · Constellation: Carina (Car) · Contains: HD309637 · HD79548 · NGC 2808

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Celestron SSAG self-centered and self-autoguided beta test: globular NGC2808 with EdgeHD11 on CGX-L 0.28" / pixel

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Celestron SSAG self-centered and self-autoguided beta test: globular NGC2808 with EdgeHD11 on CGX-L 0.28" / pixel

This is a beta test image of southern globular NGC 2808 that was centered and guided by a Celestron SSAG guidescope/guider with plate solve and multi-star guiding ability.

The mount was aligned and polar aligned using the routines in the SSAG, and then the target was centered using precise goto of the SSAG (with centering based on local plate solves). At that point I commanded the SSAG to begin guiding - and then began to take exposures for one hour total in R, G, B with exposures of 60 seconds.

The image has not been cropped so you can see the centering performed by the SSAG and its plate solves. The only processing on the image was a gradient removal in PI (I am in Bortle 8 with 18.5 mag/arc-sec^2) and stretch in photoshop.

The resulting fwhm's are around 1.7"

There is some chromatic blur in the corners due I think to focus shift in the Astronomik filters. I don't normally use these filters and did not apply focus shifts per filter.

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	7627276
PixInsight job	RSBEUEQMX6C1SRRI8IT7Z1QT2XCMPUHR
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h12m05s.981
RA (top/left)	09h10m19s.240
RA (top/right)	09h13m43s.103
RA (bottom/right)	09h13m51s.984
RA (bottom/left)	09h10m29s.858

Dec (center)	-64°52′31″.70
Dec (top/left)	-64°59′56″.44
Dec (top/right)	-65°01′19″.86
Dec (bottom/right)	-64°45′01″.95
Dec (bottom/left)	-64°43′38″.78

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Celestron SSAG self-centered and self-autoguided beta test: globular NGC2808 with EdgeHD11 on CGX-L 0.28" / pixel

Celestron SSAG self-centered and self-autoguided beta test: globular NGC2808 with EdgeHD11 on CGX-L 0.28" / pixel

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Image Index:

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Celestron SSAG self-centered and self-autoguided beta test: globular NGC2808 with EdgeHD11 on CGX-L 0.28" / pixel

Celestron SSAG self-centered and self-autoguided beta test: globular NGC2808 with EdgeHD11 on CGX-L 0.28" / pixel

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