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

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

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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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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	3969685
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

NEW DISCOVERY: StDr Object 21

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