Two little and weak probably NP StDr 167 & 174 ( Los_Calvos )

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Two little and weak probably NP StDr 167 & 174

Imaging Telescopes Or Lenses: Planewave CDK12.5
Imaging Cameras: Moravian Instruments G4-16000 MK II
Mounts: Astro-Physics 1100GTO
Filters: Chroma Blue 50x50 mm · Chroma Green 50x50 mm · Chroma H-alpha 3nm Bandpass 50x50 mm · Chroma Lum 50x50 mm · Chroma OIII 3nm Bandpass 50x50 mm · Chroma Red 50x50 mm · Chroma SII 3nm Bandpass 50x50 mm
Accessories: Skymeca Skytrack 3.0
Software: Adobe Photoshop · Pleiades Astrophoto PixInsight
Guiding Cameras: Atik 414EX Mono

Dates:: July 15, 2023 · July 16, 2023 · July 20, 2023
Frames:: Chroma Blue 50x50 mm: 28×300″(2h 20′)
Chroma Green 50x50 mm: 25×300″(2h 5′)
Chroma H-alpha 3nm Bandpass 50x50 mm: 98×1200″(32h 40′)
Chroma OIII 3nm Bandpass 50x50 mm: 92×1200″(30h 40′)
Chroma Red 50x50 mm: 25×300″(2h 5′)
Integration:: 69h 50′
Avg. Moon age:: 19.43 days
Avg. Moon phase:: 4.34%

RA center: 16h02m36s.44

DEC center: -61°58′35″.4

Pixel scale: 1.465 arcsec/pixel

Orientation: -178.858 degrees

Field radius: 0.511 degrees

WCS transformation: thin plate spline

More info:Open

Resolution: 1663x1882

File size: 17.9 MB

Data source: Own remote observatory

Remote source: Observatorio El Sauce

2 small and weak possible NP : StDr 167 & 174 Xavier Strotner and Marcel Drechsler discovered 2 possible NPs located in the Triangulum Australe.We tried to image them, they are very weak since they do not appear at all on 20-minute narrowband brutes. After 30 hours in Ha and OIII it is possible to see them appear, the 2 are very close.StDr 167 is a confirmed NP (PN-G: 323.3-06.9) for which a spectrum has already been performed by Pascal Le Dû, it has a diameter of 1.2 arc minutes. It has a crenulated circle shape and is only visible in OIIIStDr 174 is larger but more diffuse and it emits in HA and OIII the resultant makes it appear bluish-grey and does not have a really well-defined shape (like streaks). Since it is very weak, no spectrum has yet been made to confirm its nature. Its approximate size is 7.5 x 5 arc minutes.We present you the complete field, with a starless crop in version B to better identify them. The treatment was not easy and we chose not to overtreat in order to keep them looking "natural".

Final
Original
B

	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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Status	Advanced success
Started	...
Astrometry.net job	8700825
PixInsight job	4AQKNT1OY11CH2CZ8C2RBGSBWXZURDJI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h02m36s.44
RA (top/left)	15h59m37s.81
RA (top/right)	16h05m26s.81
RA (bottom/right)	16h05m30s.42
RA (bottom/left)	15h59m49s.78

Dec (center)	-61°58′35″.4
Dec (top/left)	-62°21′02″.5
Dec (top/right)	-62°21′47″.6
Dec (bottom/right)	-61°35′57″.2
Dec (bottom/left)	-61°35′06″.6

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Two little and weak probably NP StDr 167 & 174

Two little and weak probably NP StDr 167 & 174

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Two little and weak probably NP StDr 167 & 174

Two little and weak probably NP StDr 167 & 174

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