Globular Cluster M3 (Carsten Krege)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 3 · NGC 5263 · NGC 5272

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Globular Cluster M3

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Globular Cluster M3

Globular Cluster M3 taken in 20/21 April 2021

20x180s

30x180s

20x Flat 1s, 20x Flatdarks

cropped

First acceptable image with new setup and new software.

The fist bummer for this project was that the first 30 shots of the object were really a bit defocused and therefore I wasted ~90min of data because I didn't really notice the FWHM values in SGP were a bit too high. Also struggled quite a bit with PHD2 before I got it running smoothly - I just had to recalibrate. I'm still learning with every session.

I admit it was also a major fight with Pixinsight until I got here (and still did the stacking with DSS despite of the new Weighted Batch Preprocessing 2.0 script in PI) and this is of course by far not the end. The book of Warren Keller and the YT videos of Adam Block, Chris Woodhouse, Daniel Nimmervoll, Dustin Gibson, Frank Sackenheim (astrophotocologne) and Christopher v Badengoth (astrovault) were a big help. Several times I was close to give up on Pixinsight, but I admit all the failures were a good practice to learn a few basics and I'm now a little more confident that I'll get a handle on the software.

The next step is certainly to do more photos and add an IR/UV-cut filter to the setup as I had massive problems to get colours empahsized in the final M3 photo. I hope this is going to be a lot easier in the future.

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	4464905
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Globular Cluster M3

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Image Index:

Contribution Index (beta):

Globular Cluster M3

Globular Cluster M3

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