The California Nebula (Stock DSLR) (RadMan24)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 46 Per) · California Nebula · NGC 1499 · The star Menkib (ξ Per

The California Nebula (Stock DSLR), RadMan24

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The California Nebula (Stock DSLR)

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The California Nebula (Stock DSLR)

Presented here is my first rendition of California Nebula (NGC1499). Although this was shot with a stock DSLR in RGB, I’m not certain this is a natural color RGB image – I’ve seen examples of more “pink” reflecting the different hydrogen emission lines and interstellar dust. This could be due to the daylight color balance in adobe camera raw; I need to stop being lazy and do a custom white balance and use rawtherapee to confirm this is the case.

Shown here is 1 hours and 40 minutes of exposure, using a 75mm aperture DSLR lens and stock DSLR camera. Specifically, a Canon 300mm f/4 at f/4 and a Canon 90D with exposure settings of 20 seconds and ISO 800. Skies were Bortle 4/5.

Manually located using viewfinder of DSLR with help from the Stellarium app for star hopping.
Tracking was via a Fornax Lighttrack ii on top of a carbon fiber tripod and fornax wedge. No guiding.

Lights were calibrated in photoshop camera raw: adobe daylight balance, camera standard profile, lens profile correction, reduction in highlights and noise reduction. Exported 16-bit TIFFs into DSS and aligned/stacked.

Rnc-color-stretch for sky removal (no air glow removal) and color preserving stretch, adjusted blackpoint to reduce color shift at lower end of signals. Had to use a very stron sretch, must be a byproduct of number of frames and low ISO, but unsure.

Photoshop for additional curve work, which was to enhance contrast and saturation. Imagesplus64 for star reduction and minor sharpening. Photoshop then used for maintaining color space and export to web.

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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	8492702
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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The California Nebula (Stock DSLR)

The California Nebula (Stock DSLR)

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The California Nebula (Stock DSLR)

The California Nebula (Stock DSLR)

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