QHY 268C Image Test (Alex Roberts)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: IC 5070 · NGC 6989 · NGC 6997 · NGC 7000 · North America Nebula · Pelican Nebula · The star 56Cyg · The star 57Cyg · The star ξCyg

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QHY 268C Image Test

Link: https://alexroberts.smugmug.com/Alex-Roberts-Astrophotos/

Powered byPixInsight

QHY 268C Image Test

Link: https://alexroberts.smugmug.com/Alex-Roberts-Astrophotos/

This is the first successful test image of my new QHY 268C. Out of the box, the default gain of this camera was set to 100. This made focusing in SGP nearly impossible, because the stars were so blown out. After some trial-and-error, I found that reducing the gain to 26 for broadband and 56 for narrowband imaging works well. I set the offset to 30 in both cases. I settled on "Photographic" mode because "High Gain" mode was too noisy for my tastes.

I am impressed with the low read noise and dynamic range of this camera, once I got the settings right. The Optolong L-eXtreme seems to be a great match for this camera. An HOO broadband image like this with a mono camera would normally take two nights to finish. With the QHY 268C and the L-eXtreme filter, about 4 hours of acquisition time gave me the results above.

Original
Final
B

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
Top pick nominations

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
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

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	Basic success
Started	...
Astrometry.net job	3869052
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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QHY 268C Image Test

QHY 268C Image Test

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Image Index:

Contribution Index (beta):

QHY 268C Image Test

QHY 268C Image Test

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

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