The Iris Nebula | NGC 7023 - a photo on Flickriver

            The Iris Nebula or NGC 7023, is a reflection nebula, its color comes from the light of its central star, which lies in the constellation Cepheus. You can find it nearish to the North Star. It is located ~1,400 light-years away from Earth, and its gasses stretch ~6 light-years across.

Equipment:
Celestron CGEM Mount
Nikon 500mm f/4 P AI-s
Sony a7RIII (unmodified)
Altair 60mm Guide scope
GPCAM2 Mono Camera

Acquisition:
Taos, NM: my backyard - Bortle 3
101 x 181" for 5 hours 4 min and 41 sec of exposure time.
6 dark frames
15 flats frames
15 bais frames
Guided

Software:
SharpCap
PixInsight
Lightroom
Photoshop


My mount was polar aligned with SharpCap (what an amazing system for aligning). I then mounted my a7RIII and adapted Nikon 500mm f/4 P Ai-s lens to the top rail of my scope. I used SharpCap to achieve "excellent" polar alignment. I shot ISO 3200, f/4 and 181" exposures. Image frames were stacked and integrated and processed in PixInsight using: STF, Cropping, Dynamic Background Extraction, BlurXTerminator, plate solving, color correction, NoiseXTerminator and then the DSO was separated from the stars, and both files processed and stretched separately and then recombined using PixelMath. That file was brought into Lightroom for Metadata and EXIF tags, light post-processing, and cropping to the final image.
   

Taken on: March 16, 2024

Tags:

500mm

500mm f/4 P AI-S

LensTagger

a7riii

a7riiia

astro

astronomy

autoguide

autoguided

celestron

celestron cgem

deep space

deep space object

guided

iris nebula

nebula

ngc 7023

nikkor

nikon

outer space

phd2

pixinsight

reflection nebula

sony

space « less

Sets appears in: • Astronomy and Astrophotography • Nikon 500mm f/4 P AI-S

Groups appears in: • Manual Focus • Amateur Astronomy more » • Astronomy for all • Nikon Prime AI-S • Sony Alpha cameras with manual lenses • Starry Night Astrophotography • Nikkor 500mm AI-P f/4 • Backyard Astrophotography • Old and Manual Focus Lenses • BudgetAstro • Camera Lens Astrophotography • Astrophotography for beginners. • Sony A7 series with manual Nikkor lenses • WONDERS OF PHOTOGRAPHY IN GENERAL.MARAVILLAS DE LA FOTOGRAFIA EN « less

Camera: f/5.6, 18281 sec, 500mm (more info) (hide info)

Lens:	Nikon 500mm f/4 P AI-S
Aperture:	f/5.6
Exposure Time:	18281
Focal Length:	500mm
Color Space:	sRGB
Software:	Adobe Photoshop 25.1 (Macintosh)
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Stats: 2,014 views / 5 comments

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