NEW DISCOVERY: StDr Object 21 (equinoxx)

Celestial hemisphere: Northern · Constellation: Perseus (Per)

NEW DISCOVERY: StDr Object 21

20.AUG.2020 - Celestron Edge HD 1100 + Hyperstar v4 + ASI6200MM Pro

38 x 600s Baader Ha HighSpeed f/2 Filter

21.AUG.2020 - Celestron Edge HD 1100 + Hyperstar v4 + ASI6200MM Pro

33 x 600s Baader O3 HighSpeed f/2 Filter

-> no recognizable signal in O3

20-21.AUG - Takahashi FSQ-85 + Moravian G2-8300 FW

81 x 120s a Astronomik LRGB

StDr Object 21 discovered by Xavier Strottner and Marcel Drechsler.

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The nature of the nebula is not 100% clear.

It is probably the shock front of a white dwarf, which races through the interstellar medium

at high speed and thereby ionizes the surrounding gas.

Description:

- White dwarf of a once low-mass star.

- The star has an extremely high proper motion, which explains the elongated shape of the structure.

- It's likely that the white dwarf originates from a binary system

- Southern shock arc with a long extension to the north

- no OIII signal

Central star:

- Cool White Dwarf PM J04263 + 4820 (WDJ042623.59 + 482009.85)

- Very high speed CSPN

- proper motion: RA 37.540 / DEC -123.155 (GAIA)

- Distance: 107 parsec

- temperature: 8874.41K

- white dwarf probability: 86.44%.

- Mass (sun): 0.143853

- Magnitude: 15.992619

- UV-ratio: far UV 16.92 / near UV 16.97

Final
Original
B

Images from the EdgeHD Series
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Takahashi Refractors
HyperStar Lens Astrophotography
Schmidt-Cassegrain Telescope (SCT) Imagers
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ASI 6200 MM Pro
Moravian Users

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
PixInsight job	FYR27P28W09XF723OEQFCX9KG65M2SA5
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	04h26m29s.19
RA (top/left)	04h27m55s.31
RA (top/right)	04h25m01s.44
RA (bottom/right)	04h25m03s.59
RA (bottom/left)	04h27m56s.25

Dec (center)	+48°21′26″.7
Dec (top/left)	+48°32′36″.2
Dec (top/right)	+48°32′17″.1
Dec (bottom/right)	+48°10′13″.1
Dec (bottom/left)	+48°10′31″.9

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NEW DISCOVERY: StDr Object 21

NEW DISCOVERY: StDr Object 21

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NEW DISCOVERY: StDr Object 21

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