LDN 1251 (milkywayrod22)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep)

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LDN 1251

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LDN 1251

The acquisition of the data for this image of LDN 1251 was especially prolonged over two years due to the untimely failure of both my imaging cameras. Service is now complete on the FLI 16200 CCD and I was finally able to complete the project. Thankfully the early data was carefully processed and saved until now. Great lessons were learned on finally adding data with two different cameras, acquisition times (600 and 300 sec) as well as different pixel sizes (6 and 3.75 microns). The best feature of the prolonged delay was the continued improvements in processing techniques which made the final image easy to process. Special thanks to lukomatico who presented Bill Blanshan’s excellent work (anotherastrochannel) on three methods on star reduction. Very complicated process but Bill provided the final pixinsight pixelmath equations which made the process simple. Easy to download the pixelmath equations. Highly recommended. Thanks also to Sarah Mathews (SarahMathsAstro) who nicely provided techniques for star transfer in her video on forax processing in NB imaging). Starnet 2 was also used to great advantage in creating starless images for processing. A very old tutorial on processing dust (How to enhance dust without pushing the stars) by Gerald Wechselberger using pixelmath was adapted to the Starnet processing of starless images. This technique was excellent and definitely worth another look for dust processing using pixelmath equations.

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	6364559
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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LDN 1251

LDN 1251

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Image Index:

Contribution Index (beta):

LDN 1251

LDN 1251

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