IC434 (Hermann Dresen)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Flame Nebula · IC 431 · IC 432 · IC 434 · IC 435 · NGC 2023 · NGC 2024 · Orion B · The star Alnitak (ζOri) · The star σOri

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IC434

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IC434

While fighting frost and technique trying to forge a narrowband image with an achromat and a DSLR... Orion rose in my back.

When I gave up my futile experiment, I just had to turn to IC434.

As the start of this night already, things didn't run all that well... In the morning I had some 35 Lightframes, half of wich showed dawn coming. Most of the lights, and all Darks and biases were lost due to a memory card failure. Only the flats went well in the morning.

When I realized, I wouldn't get more than 20 minutes of integration time, I just went creative: the camera went back to the cold morning shadows. Darks and Biases got re-shot. Then I picked the best ~7 Frames out (ISO640, 116sek.), copied them 4 times and used those lights and all calibration-Frames with Sirils wonderful stacking script, that even did the Preprocessing.

This may be a lot of 'no goes' - but in the end, the image was calculated from the data of about seven 2 3/4 minute-lights, plus 10 Darks and ~30 flats on ISO 640 with the achromatic skywatcher Startraveller 150/750.

What do you think?

Thanks for reading and CS 🤓🖖

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	4027642
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Image Index:

Contribution Index (beta):

IC434

IC434

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