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Hemisphere:  Northern  ·  Contains:  Sh2-175
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Sh2 175 H-alpha RGB, 



    
        

            jerryyyyy
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Sh2 175 H-alpha RGB

Imaging telescopes or lenses: Stellarvue SVT 130T

Imaging cameras: SBIG STT 8300M

Mounts: Astro-Physics Mach1AP GTO CP4

Guiding telescopes or lenses: Stellarvue SVT 130T

Guiding cameras: SBIG STT 8300M

Software: Software Bisque TheSky X Professional  ·  Maxim DL  ·  EQMOD  ·  PixInsight  ·  DC-3 Dreams ACP Observatory Control Software  ·  CCDWare FocusMax V.4  ·  Astro-Physics Command Center (APCC) Software

Filters: Astrodon Red Tru-Balance E-Series Generation 2  ·  Astrodon Blue Tru-Balance E-Series Gen 2  ·  Astrodon Green Tru-Balance E-Series Gen 2  ·  AstroDon 5nm Ha filter

Accessory: Moonlite Nitecrawler 3.5


Dates:Oct. 4, 2019

Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 12x240" bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 12x240" bin 1x1
Astrodon H-alpha 5nm: 18x1800" bin 1x1
Astrodon Red Tru-Balance E-Series Generation 2: 12x240" bin 1x1

Integration: 11.4 hours

Avg. Moon age: 6.22 days

Avg. Moon phase: 37.79%


Astrometry.net job: 2966874

RA center: 0h 27' 16"

DEC center: +64° 42' 19"

Pixel scale: 0.611 arcsec/pixel

Orientation: 0.089 degrees

Field radius: 0.159 degrees


Resolution: 1356x1288

Locations: Stanford Faculty Observatory, Stanford, California, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

One more of the smaller (2"x2") Sharpless2 objects.

Information from:

http://galaxymap.org/cat/list/sharpless/171

Sh 2-175 appears in the direction of a supershell of molecular and atomic hydrogen clouds surrounding the Cas OB5 association, which is part of the Perseus arm. A widely varying range of distances to this nebula and its potential ionising star has been published in the scientific literature.

Avedisova gives the ionising star of Sh 2-175 as LS I +64 26 (O9.5 V), which Humphreys lists as a field star outside of any OB association.

Russeil concludes that LS I +64 26 is actually a B1.5 V star at 1090 +/- 210 parsecs and locates Sh 2-175 at this much closer distance.

You can read more about this region (with full references) in this galactic plane commentary (see the above web site).

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jerryyyyy
jerryyyyy
License: None (All rights reserved)
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Sh2 175 H-alpha RGB, 



    
        

            jerryyyyy