Astro-Physics AP130GTX First Light (wadeh237)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 63 · NGC 5055 · Sunflower Galaxy

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Astro-Physics AP130GTX First Light

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Astro-Physics AP130GTX First Light

This is the first light image for my new Astro-Physics AP130GTX refractor.

This was a short session, with just about 5.5 hours total exposure. It was also a torture test for the accuracy of my AP1600 mount with absolute encoders, due to poor conditions.

It was clear, with ok transparency, but the seeing was quite poor and the wind was blowing at about 25mph or so for most of the night, with gusts strong enough to rattle the windows on occasion. The exposures were all 10 minutes long, at about 0.8 arc seconds per pixel - and unguided with an APCC Pro tracking model of about 180 points. I did not discard any sub exposures.

I was mainly interested in the performance of the configuration, so image processing was minimal. After image integration, I spent about 25 to 30 minutes on it. The steps were as follows:

ImageCalibration with bias and flats (I don't use dark frames with this camera)

CosmeticCorrection

SubframeSelector to weight images (they all came out with about the same weight)

StarAlignment

ImageIntegration

DynamicCrop

MureDenoise

ChannelCombination

PhotometricColorCalibration

DynamicBackgroundExtraction

HistogramTransformation to make non-linear

CurvesTransformation to tweak color balance

ColorSaturation

I did not do any noise reduction (other than MureDenoise) or sharpening.

The capture details were as follows:

Telescope: AP130GTX

Mount: AP1600CGO-CP4 with Absolute Encoders, unguided

Camera: QSI 690-wsg8 with Astrodon RGB filters

Capture Software: NINA

Processing Software: PixInsight

Exposures: 11x600 Red, 11x600 Green, 10x600 Blue, all unbinned

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
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Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Star trails
Northern lights
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Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	4384090
PixInsight job	H3Q8UF7IRIX6UM4OSH13POAL8I3QUF1T
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h15m49s.532
RA (top/left)	13h17m53s.996
RA (top/right)	13h13m37s.529
RA (bottom/right)	13h13m46s.173
RA (bottom/left)	13h18m00s.475

Dec (center)	+42°01′53″.21
Dec (top/left)	+42°20′42″.27
Dec (top/right)	+42°18′52″.43
Dec (bottom/right)	+41°42′52″.70
Dec (bottom/left)	+41°44′45″.31

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Astro-Physics AP130GTX First Light

Astro-Physics AP130GTX First Light

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Image Index:

Contribution Index (beta):

Astro-Physics AP130GTX First Light

Astro-Physics AP130GTX First Light

Equipment

Acquisition details

Description

Comments

Sky plot

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