Moon in Twilight Experiment 2 (Steve Lantz)

Contains: Solar system body or event

Moon in Twilight Experiment 2

This is my second experiment with converting a lunar image (waning gibbous) taken in relatively bright twilight to a dark sky background. The 15s video from which the final image was drawn was taken at 7:02 MST 4/11/2020 in very poor seeing. Rather than using a lucky capture algorithm, I manually scanned through the video and selected the very best frames, of which there were only four, to stack. In Photoshop, I created a background sky frame by using the color sampler to sample the blue sky and then the brush tool to paint an entire frame that color. One channel (RGB) at a time, I used the difference algorithm in the image calculations menu to obtain the difference between the respective R, G and B channels of the stacked moon frame and the sky background frame and used the three results to create an RGB, R, G, and B set of channels for a color image. I converted this to black and white and processed the dark sky image from there. The video was taken with 0.0025s exposures at about 64 fps.

The final image shows Mare Tranquillitatus (above) and Mare Nectaris (below). The mostly vertical black streak to the left of Mare Nectaris, Rupes Altai, is of interest in that it is the best preserved remnant, a crater rim, of the ancient impact basin in which the mare later formed.

Original
Final
C

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
Artificial satellite

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

AstroBin

AstroBin

Image Index:

Contribution Index (beta):

Moon in Twilight Experiment 2

Moon in Twilight Experiment 2

Equipment

Acquisition details

Description

Comments

Revisions

Histogram

		...
You have no new notifications.

AstroBin

AstroBin

Image Index:

Contribution Index (beta):

Moon in Twilight Experiment 2

Moon in Twilight Experiment 2

Equipment

Acquisition details

Description

Comments

Revisions

Histogram

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

Delete this revision?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Error

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information