North American Nebula 6 Panel Mosaic in HaLRGBOIII (Dan Watt)

North American Nebula 6 Panel Mosaic in HaLRGBOIII

This was a rather large project I undertook out of nowhere. Started with just one panel of the Cygnus wall and then snowballed into a 6 panel mosaic covering the region. Ha and OIII data was taken from my backyard in Los Angeles, LRGB data was taken from a Bortle 2 site in the Inyo Mountains. Spent a week at Grandview campground gather the data and then another several days at home to process and here we are.

This was my first project using the QHY OAG and ZWO ASI174 Mini having previously used a ZWO ASI120mm - mini on a 60mm guidescope. And what a huge difference that made, I can easily do tons of 300s+ subs without having to throw any out due to tracking errors. Very happy so far.

Started using the photometricmosaic workflow in Pixinsight for this project. Finally, seemingly perfect mosaics! Without going into tons of detail (there are plenty of excellent guides online) my workflow is as follows: 1. Stack each panel on it's own the normal way as if each was it's own image. 2. Crop out each panels edges to get rid of low SNR regions from stacking 3. Gradient removal, either DBE or ABE. A light touch is key here 4. Plate solve each image using ImageSolver. Be sure to enable Distortion Correction. Default settings for Distortion Correction work fine. 5. MosaicByCoordinates using all your different panels. Defaults are fine except I'll make projection Gnomonic. I'm imaging around 600mm so this works fine, other field of views may require different projections but I'd only worry about that if you're going very wide with camera lenses. 6. TrimMosaicTiles. Manually inspect each panel to trim out low SNR regions. 7. PhotometricMosaic. I'll combine each row or column one panel at a time, then combine the different rows or columns together using this tool. Only setting I change is the the combination mode, I found average works best for me.

Original
Final
B

Fast Newtonians
SoCal Astrophotography
Cloudy Nights

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	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

	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

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	5994620
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

North American Nebula 6 Panel Mosaic in HaLRGBOIII

North American Nebula 6 Panel Mosaic in HaLRGBOIII

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

North American Nebula 6 Panel Mosaic in HaLRGBOIII

North American Nebula 6 Panel Mosaic in HaLRGBOIII

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

In these public groups

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

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information