Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  Iris Nebula  ·  NGC 7023
Getting plate-solving status, please wait...
NGC 7023 • Iris Nebula from a White Zone, 



    
        

            Douglas J Struble
NGC 7023 • Iris Nebula from a White Zone
Powered byPixInsight

NGC 7023 • Iris Nebula from a White Zone

Getting plate-solving status, please wait...
NGC 7023 • Iris Nebula from a White Zone, 



    
        

            Douglas J Struble
NGC 7023 • Iris Nebula from a White Zone
Powered byPixInsight

NGC 7023 • Iris Nebula from a White Zone

Equipment

Imaging Telescopes Or Lenses
Stellarvue SVX102T-R · Explore Scientific 152 mm Carbon Fiber · Stellarvue 102mm Raptor
Imaging Cameras
ZWO ASI1600MM-Cool
Mounts
Astro-Physics Mach 1 GTO · Orion Atlas Pro AZ/EQ-G · Celestron CGX on Pier
Filters
Astronomik Deep-Sky B · Astronomik Deep-Sky G · Astronomik Deep-Sky R · Astrnomik CLS-CCD · Astrodon Lum Tru-Balance E-Series Gen 2 · Astrodon Green Tru-Balance E-Series Gen 2 · Astrodon Red Tru-Balance E-Series Gen 2
Accessories
ZWO 8x 1.25" Filter Wheel (EFW) · QHYCCD PoleMaster · Hotech 2" SCA Self-Centering Field Flattener · MoonLite CFL 2.5" Large Format Focuser
Software
Adobe Photoshop CS5.5 · PHD2 · Sequence Generator Pro · PixInsight · SkySafari Pro
Guiding Telescopes Or Lenses
Stellarvue 50mm Guidescope · Orion 80mm Short Tube
Guiding Cameras
ZWO ASI224MC · Starlight Xpress Lodestar x2

Acquisition details

Dates:
June 16, 2017 ·  June 18, 2017 ·  June 19, 2017 ·  June 22, 2017 ·  May 23, 2018 ·  May 24, 2018 ·  May 25, 2018 ·  June 13, 2020 ·  June 14, 2020 ·  June 15, 2020 ·  June 16, 2020
Frames:
Astrnomik CLS-CCD: 724x60" (12h 4') (gain: 0.00) -20°C bin 1x1
Astrodon Blue Tru-Balance E-Series Gen 2: 217x60" (3h 37') (gain: 0.00) -20°C bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 211x60" (3h 31') (gain: 0.00) -20°C bin 1x1
Astrodon Lum Tru-Balance E-Series Gen 2: 671x30" (5h 35' 30") (gain: 0.00) -20°C bin 1x1
Astrodon Lum Tru-Balance E-Series Gen 2: 575x60" (9h 35') (gain: 0.00) -20°C bin 1x1
Astrodon Red Tru-Balance E-Series Gen 2: 60x120" (2h) (gain: 0.00) -20°C bin 1x1
Astronomik Deep-Sky B: 176x60" (2h 56') (gain: 0.00) -20°C bin 1x1
Astronomik Deep-Sky G: 176x60" (2h 56') (gain: 0.00) -20°C bin 1x1
Astronomik Deep-Sky R: 176x60" (2h 56') (gain: 0.00) -20°C bin 1x1
Integration:
45h 10' 30"
Darks:
50
Flats:
50
Bias:
250
Avg. Moon age:
20.04 days
Avg. Moon phase:
44.66%
Bortle Dark-Sky Scale:
8.00

Basic astrometry details

Astrometry.net job: 3620059

RA center: 21h01m35s.8

DEC center: +68°0918

Pixel scale: 1.106 arcsec/pixel

Orientation: 290.582 degrees

Field radius: 0.501 degrees

Resolution: 2593x1976

Locations: Backyard White Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard

Description

This is the third attempt to collect more data on the Iris Nebula from my white zone. I am still not very satisfied with the dark nebula and most likely will never be able to pull out the dark nebula definition from my white zone to my satisfaction. However, I do like the core of it's reflection.

NGC 7023 is a reflection nebula located in the west central section of the far northern constellation of Cepheus. The nebula contains at its centre an extremely young star named V380 Cep (mag. +7.1) which is believed to have burst into life just 5,500 years ago. Since still incredibly young there is plenty of local dust surrounding the star and when starlight hits the dust it's reflected to become the visible nebula.

NGC 7023 is located 6 degrees northwest of the brightest star in Cepheus, Alderamin (α Cep - mag. +2.5) with third magnitude Alfirk (β Cep) positioned about 3.5 degrees to the northeast. Only a degree east-northeast of NGC 7023 is Mira type variable star T Cep, which fluctuates between magnitudes +5.2 and +11.3 over a period of 388.14 days. A faint eleventh magnitude barred-spiral galaxy, NGC 6951, is positioned two degrees southwest of NGC 7023.

The nebula is also known as the Iris Nebula and is number 4 in the Caldwell catalogue. It was discovered by Sir William Herschel on October 18, 1794.

Comments

Sky plot

Sky plot

Histogram

NGC 7023 • Iris Nebula from a White Zone, 



    
        

            Douglas J Struble