Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  PK120+18.1  ·  Sh2-174
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SH2-174 Valentine Rose Nebula and IFN, 



    
        

            Roland Schliessus
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SH2-174 Valentine Rose Nebula and IFN

Getting plate-solving status, please wait...
SH2-174 Valentine Rose Nebula and IFN, 



    
        

            Roland Schliessus
Powered byPixInsight

SH2-174 Valentine Rose Nebula and IFN

Acquisition details

Dates:
Aug. 25, 2020 ·  Sept. 4, 2020 ·  Sept. 8, 2020 ·  Sept. 9, 2020 ·  Sept. 10, 2020 ·  Sept. 11, 2020 ·  Sept. 12, 2020 ·  Sept. 13, 2020 ·  Sept. 14, 2020 ·  Sept. 16, 2020 ·  Sept. 17, 2020 ·  Sept. 19, 2020 ·  Sept. 20, 2020 ·  Sept. 21, 2020
Frames:
Baader B 1.25": 20×300(1h 40′) bin 1×1
Baader B 1.25": 30×60(30′) bin 1×1
Baader G 1.25": 30×60(30′) bin 1×1
Baader G 1.25": 20×300(1h 40′) -20°C bin 1×1
Baader Ha 1.25" 7nm: 52×1200(17h 20′) -20°C bin 1×1
Baader Ha 1.25" 7nm: 18×3600(18h) -20°C bin 1×1
Baader L 1.25": 147×300(12h 15′) -20°C bin 1×1
Baader O3 1.25" 8.5nm: 54×1200(18h) -20°C bin 1×1
Baader O3 1.25" 8.5nm: 18×3600(18h) -20°C bin 1×1
Baader R 1.25": 22×300(1h 50′) -20°C bin 1×1
Baader R 1.25": 30×60(30′) -20°C bin 1×1
Integration:
90h 15′
Darks:
50
Flats:
50
Bias:
50
Avg. Moon age:
16.12 days
Avg. Moon phase:
32.92%
Bortle Dark-Sky Scale:
4.00

RA center: 23h46m47s.920

DEC center: +80°5636.30

Pixel scale: 0.772 arcsec/pixel

Orientation: 4.522 degrees

Field radius: 0.452 degrees

More info:Open 

Resolution: 2536x3358

File size: 2.0 MB

Data source: Backyard

Description

Moravian G2-8300:
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Filter Baader36mm, ungefasst
Gain: 0.396 e-/DN

Gaussian Noise: 20.95 DN

With the many gathered nice Integrated Flux Nebula shown, the object looks a bit dirty. That's why the image does not look smooth after blending with Ha and O3.

Source Wiki SH2-174:

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SH2-174 is a planetary nebula visible in the constellation of Cepheus.

It is one of the northern most planetary nebulae of the celestial vault; γ Cephei is located about 3 ° north of Alrai and is visible in long exposure photos taken with a powerful amateur telescope. Its strongly northern declination means that it can be observed almost exclusively from the northern hemisphere, where it is circumpolar up to tropical latitudes.

The cloud, cataloged as a generic emission nebula in the 1960s, has never shown signs of star formation in progress, nor was the ionizing star of its gases known; during the nineties the hypothesis was advanced that it was a planetary nebula, whose central star has over time slipped out of the gaseous envelope it created itself, given that its dimensions were too small to be an H II region, but comparable to those of a normal planetary nebula. This ionizing star would be the white dwarf cataloged as GD 561, located outside the cloud. The distance, from which the dimensions were derived, was obtained through the study of the radial velocity, and is indicated around 300 parsecs (about 980 light years).

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SH2-174 Valentine Rose Nebula and IFN, 



    
        

            Roland Schliessus

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