CTB1, Abell 85 "Knospe im All" (AstroAchim)

CTB1, Abell 85 "Knospe im All"

CTB1 alias ABELL 85.
Abell 85 ist ein großer Supernova-Überrest (SNR), der sich im Sternbild Kassiopeia befindet. Der südliche Teil der Supernova-Blase schaffte es auch in den Lynds Bright Nebula Catalogue als LBN 576. Ursprünglich von George Abell als Planetarischer Nebel katalogisiert, wurde schnell klar, dass es sich um einen SNR handelte. Abell 85 wurde auch als Radioquelle anerkannt und erhielt die Alternativbezeichnung CTB 1.
Da der Supernova-Überrest ziemlich lichtschwach ist, habe ich Einzelbelichtungen von 15 Minuten für die Filter HAlpha, OIII und SII gemacht. Insgesamt ca. 25h Schmalband Aufnahmen, jedoch musste ich ein paar Bilder wegen Nachführproblemen oder Wolken entsorgen. So waren es am Ende nur noch 20:20h Schmalband. Für die Sterne habe ich noch 02:15h RGB Daten gesammelt.
Ich hoffe ich habe es in der Nachbearbeitung nicht übertrieben

Aufnahmedaten (Gain 139, Offset 21, T=-20°C):
Gesamtbelichtung 22,5h:
Ha 43x900sec = 10:45h;
SII 11x900sec = 01:50h;
OIII 31x900s = 07:45h
je R, G, B 10x180sec = 3 x 00:45h;
Flats, Darkflats, Darks, Bias
Hardware:
Lacerta Newton 200/800, EQ6-R Pro, ZWO ASI 1600MMC, Baader Filter 7nm OIII + SII + Ha + LRGB, MiniPC mit N.I.N.A + PHD2 + Stellarium
SW: Astro Pixel Prozessor, PS, Starnet++, Topaz Denoise AI

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	n/a
Started	n/a
Astrometry.net job	n/a
PixInsight job	n/a
PixInsight queue size	n/a
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