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Contains:  California nebula, NGC 1499, Part of the constellation Perseus (Per), The star 42Per, The star 50Per, The star 52Per, The star 54Per, The star Atik (ζPer), The star εPer, The star νPer, The star ξPer, The star οPer
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California Nebula at 85mm in HOO, 


California Nebula at 85mm in HOO
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California Nebula at 85mm in HOO

Technical card

Dates:Jan. 21, 2020

Frames: 52x240"

Integration: 3.5 hours

Avg. Moon age: 26.22 days

Avg. Moon phase: 11.87%

Basic astrometry details job: 3218691

RA center: 4h 2' 9"

DEC center: +36° 34' 55"

Pixel scale: 9.401 arcsec/pixel

Orientation: 92.980 degrees

Field radius: 8.036 degrees

Resolution: 5255x3203

Locations: Home, Silver Spring, Maryland, United States

Data source: Backyard


This bicolor image of the California Nebula (NGC 1499) was created using images taken through an STC Duo Narrowband Clip Filter. The image uses the HOO color palette with R=Ha, G=OIII, and B=OIII.

Imaged with 85mm/F1.4 Rokinon at F/2, STC Duo Narrowband Clip Filter, and full spectrum modified Nikon D5300.

Pre-processed using PixInsight Batch Pre-Processing (BPP) script. Images calibrated using darks, bias, and flats. Extracted red/green/blue channels using BatchChannelExtraction script. R, G, & B channels registered and stacked independently using StarAlighment and Integration. R channel data gives the Ha image. Averaged G & B channels using Pixelmath to generate OIII image. Total integration time of ~3 hours using 52 subs at ISO200x240 sec. R and Average of G+B channels individually post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT for noise reduction, stretched using masked stretch, Curves Transformation, TGVDenoise for noise reduction, HDR transform, Local histogram transform, morphological transform to shrink stars. HOO image generated using SHO-AIP script with luminance using Ha data.

For Ha version of the image and additional acquisition details, see:



License: None (All rights reserved)

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California Nebula at 85mm in HOO,