Messier 16 (Daniel.P)

Celestial hemisphere: Southern · Constellation: Serpens (Ser) · Contains: Eagle nebula · IC 4703 · M 16 · NGC 6611 · Sh2-49 · Star Queen nebula

Powered byPixInsight

Messier 16

Powered byPixInsight

Messier 16

This is my attempt to image the famous "Pillars of Creation" from HST ...

The object was low on the horizon but the result was OK even I struggled quite a lot with guiding.

I also took 10 x 600s exposure without the LPV4 filter on 1 august.

The contrast was not as good. So I decided to use only the 6 x 1800s subs with LPV4 filter.

I only used the "no filter" subs for balancing the star colors using a mask.

I also replaced the L channel with the Red channel in the stacked image. The R channel is equivalent to an Ha filter with 18 nm width with the LPV4 and OSC imager. It allowed me to reduce noise as most of the signal is in Ha. I used the other channels for color information only.

Pre-processing done in Pixinsight :

- overscan area offset correction

- bias correction

- dark correction using 7 x 1800 s darks

- flat correction

- hot pixel correction

- debayer

- registration

- stack

Processing done in Pixinsight :

- replacing the L channel with the Red channel

- backgroung color neutralisation

- color calibration using nebula

- deconvolution masking low levels and using a "deringing" mask to protected bright stars

- non linear image creation

- color saturation boost masked

- SCNR noise reduction

- TGV denoise (no mask)

- final color adjust

- balancing star color (mask) using the color infomation from the 10 x 600s unused subs acquired without the LPV4 filter.

Final image :

- jpeg calibration done in Mac Photo (levels adjust, further saturation boost and enhancing local contrast)

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	Advanced success
Started	...
Astrometry.net job	1311067
PixInsight job	1VMUVMLJWEAXETJJ6DCTOR2NP0E0DDUS
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h18m46s.453
RA (top/left)	18h20m01s.517
RA (top/right)	18h17m23s.141
RA (bottom/right)	18h17m31s.194
RA (bottom/left)	18h20m09s.883

Dec (center)	-13°50′43″.75
Dec (top/left)	-13°36′23″.84
Dec (top/right)	-13°39′24″.33
Dec (bottom/right)	-14°05′02″.100
Dec (bottom/left)	-14°02′02″.88

Image Index:

Contribution Index (beta):

Messier 16

Messier 16

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Messier 16

Messier 16

Equipment

Acquisition details

Description

Comments

Sky plot

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?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information