Dumbbell Nebula (M27) (Wenhan Guo (Danny))

Dumbbell Nebula (M27)

'What do you expect?' he murmured, 'Time passes.'

'That's how it goes,' Úrsula said, 'but not so much.'

When she said it she realized that she was giving the same reply that Colonel Aureliano Buendía had given in his death cell, and once again she shuddered with the evidence that time was not passing, as she had just admitted, but that it was turning in a circle. (One Hundred Years of Solitude)

Regardless of whether time is linear, relative, circular, spiral, Borges’s mesh-like, or multi-dimensional, I am always moved for grasping the moment of flowing time. For me, astronomy is connected with literature: both are an exploration out of the everyday world, both possess an ancient power and the awe of eternity. I think it is my great honor to be able to record the history of the cosmos amidst the noise of human voices.

I still encountered various problems this trial. ST4 was broken, so guiding became impossible. After that, the Dec board did not respond for an hour, delaying the actual exposure to about three o'clock. The astronomical twilight in Chongming started at 3:30. I took a big gamble to take RGB until 4:30 so that at least one hour of color exposure could be accumulated. Yet the battery went on strike after ten minutes and I was only able to take 1 exposure for each RGB channel... During the exposure time of GB, thin clouds was covering M27, causing the overwhelming red noise in the picture and making white balance a tragedy. But anyway, this is the first near-successful HaRGB picture!

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 pending
Started	...
Astrometry.net job	4827330
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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