View allAll Photos Tagged NGC7635
Re-worked version
Bubble Nebula and Open cluster M52 in the Hubble palette. Hoping to produce a colour blend of this in the near future.
TS APO65Q Telescope
Atik 490EX CCD Camera
QHY5L Guide Camera on 90x50 finder scope
Baader Ha, OIII and SII narrow band filters.
Artemis Capture.
PHD2 Guiding.
All processing Pixinsight incl stacking (image integration) plus some actions in PS
Ha=x12 600 Seconds
OIII=x12 600 Seconds
SII=x12 600 Seconds
Total of 6 hours July and August 2016
NGC 7635 Bubble Nebula
Distance from Earth: 11,090 light years
NGC 7635 (sometimes known as the Bubble Nebula or C 11) is a diffuse nebula visible in the constellation of Cassiopeia, towards the border with Cepheus.
It is a HII region, at the southern vertex of which there is an empty structure, caused by the pressure of the radiation of a central star of blue color (spectral class O), SAO 20575, of ninth magnitude, whose stellar wind reaches 2000 km / s; it is a blue Giant, which is also responsible for the ionization of the nebula, which emits its own light. Its distance from the Sun is estimated at 11,000 light-years.
Meade RCX 14 "
Ioptron Cem120
Moravian G2-8300
Astronomik filters
This is a photograph taken with a small refractor telescope and a DSLR of two Deep-Sky objects located in the Northern Hemisphere constellation of Cassiopeia, the Queen. Although they look like being close to each other, they are located far apart from each other, both of course belonging to our Milky Way Galaxy collection of stars and nebulae.
The object at center is M52 (Messier 52, NGC 7654), an open star cluster of about 200 stars at an estimated distance of about 4,000 to 5,000 light years. It was discovered by Charles Messier on 1774. These stars were born from the same interstellar nebula of gas and dust about 35 million years ago, so this is a young star cluster by astronomy standards. This object, visible with a small telescope or even binoculars under clear, dark skies is sometimes called the Salt-and-Pepper cluster.
To the right of M52 we can see the Bubble nebula (NGC 7635), which was discovered by W. Herschel in 1787. This object is located further away from M52, at an estimated distance of about 11,000 light years. The Bubble Nebula is a strange planetary nebula, formed from a fast stellar wind of a hot, young, massive star located inside the nebula. As the wind comes off the star, it pushes the surrounding gas to form a giant sphere that is surrounded by a molecular cloud. The high-energy ultraviolet light from the star ionizes the gas atoms, causing them to glow. The star that illuminates the Bubble is some 25 to 40 times as massive as our Sun and thousands of times brighter. This Wolf-Rayet star will probably end up exploding as a supernova.
The Bubble nebula is much dimmer than M52 and requires a large telescope to be seen. Finally, at the upper right we can see a smaller nebula, which is catalogued as NGC 7538, at about 9,000 light years, a region of active star formation containing a protostars with a mass of about 300 solar masses.
I photographed these two objects back in 2017 but this time I managed to collect about 1,5 hours of data with the use of a CLS light pollution filter, so hopefully a better result was obtained.
Thanks to everyone for viewing - clear skies!
Details:
Telescope: Orion EON 80ED
Camera: Canon EOS 20Da
Mount: Vixen Sphinx (NexSXW)
Filter: Astronomik CLS
Guiding: 80/400 Skywatcher refractor - SkyWatcher SynGuider
Light frames: 20 x 5 mins (total: 100 mins), ISO 3200, Custom WB, calibrated with darks
Date: 26 October 2019
Processing: DSS 4.2.3, Adobe Photoshop 2020 with Astronomy Tools Actions set (spikes added to the brightest stars).
Locations: Deep Sky West, Rowe, New Mexico, United States
ASTRO-PHYSICS
175 mm f/8 Starfire EDF (175EDF):
HOO + SII blend, just for a first review. RGB data will be added soon.
Integration: 28.5h
Ha: 27 x 1800
OIII: 9 x 1800
SII: 21 x 1800
PixelMath:
R= Ha*.76 + SII*.24
G= OIII
B= OIII*.85 + Ha*1.5
NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia.
This is my first completed image with the new ODK10 telescope from Orion Optics. It has taken a little tuning all round. but I think I'm there now!
NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel. It is located approx 7800 light years away.
Details
M: Avalon Linear Fast Reverse
T: ODK10
C: QSI683 ws-g with 3nm narrowband filters.
16x1800s Ha
17x1800s OIII
18x1800s SII
25.5 hours total integration time.
A widefield view of Cassiopeia and Cepheus containing a variety of objects including the Bubble Nebula – lower center aka NGC7635, Shapless-162 or Caldwell 11, which is an HII emission region that contains a bubble structure created by stellar wind from a massive hot star. It is estimated to be anywhere from 7100 to 11,000 lightyears from earth. Another prominent object is the Lobster Claw Nebula or Sharpless-157 on the right side of the frame at about 11,050 lightyears distant. On the left side of the frame is the huge diffuse nebula Sharpless 161 which is studded with the bright nebula NGC7538 sometimes called the Northern Lagoon Nebula or Brain Nebula, (both are about 9100 lightyears distant). Aside from these glowing gas regions there are two prominent star clusters: NGC7510 aka the Dormouse or Arrowhead Cluster and The Cassiopeia Salt and Pepper Cluster (M52, NGC7654).
The field contains objects from Lynds' Catalogue of Bright Nebulae
- LBN 547
- LBN 543
- LBN 544
- LBN 548
- LBN 549
- LBN 540
- LBN 533
- LBN 536
- LBN 537
Details:
- Acquisition Date: 09/02/2022 to 09/03/2022
- Location: Western Massachusetts USA
- Imaging Camera: QHY600PH-M -10°C - Mode 1(High Gain) Offset:15 Gain:56
- Telescope: Takahashi FSQ106 EDXIII @ f/5 (530mm focal length -106mm aperture)
- Mount: Astro-Physics AP1100 w/GTO4
- Guide scope: Celestron Off Axis Guider
- Guide Camera: ASI174m mini
- Software: Adobe Photoshop CS5, Sequence Generator Pro, PixInsight 1.8 Ripley, Aries Astro Pixel Processor
Filters used:
- Chroma Hydrogen Alpha (Ha) 3nm 50mm
- Chroma Oxygen III (OIII) 3nm 50mm
- Astrodon Sulfur II (SII) 3nm 50mm
Exposure Times:
-Chroma Hydrogen Alpha: 15 x 600 sec (150 min)
-Chroma Oxygen III: 15 x 600 sec (150 min)
-Astrodon Sulfur II: 15 x 600 sec (150 min)
Total Exposure: 450min. (7.5 hrs.)
Sky Quality:
-Magnitude: 19.71
-Bortle Class 5
-1.41 mcd/m^2 Brightness
-1234.6 ucd/m^2 Artificial Brightness
Nouveau traitement SHO sur ce crop
Canon EF 400mm f2.8 + TCx1.4 (FL: 560mm )
AP1100GTOAE no guiding
Asi 183 MM + filtres SHO Astronomik 6nm
Pauses 137x300s (11h25')
DESCRIPTION + OBJECTS: Very interesting and rich region of nebulosity in Cassiopea constellation. From left to right you can see Sh161, Sh158 (NGC7538), Sh169, Sh152, NGC7635 Bubble nebula, M52 (NGC7654), NGC 7510, Sh157 Lobster Claw nebula in the center. FOV 4° x 2,6°.
GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor 500/5,6 PF, Astronomic UV/IR/L2 Clip in filter, Rollei Astroklar light pollution filter, Dew heater strip, Sensor pixel scale xx 1,79 arcsec/px, tracking mount iOptron CEM60EC - 3 star alignment, no auto guiding.
ACQUISITION: September 3rd, 2021, Struz, CZ, Subexposure 180s, f 5,6, ISO 2000, Interval 15 s, RAW-L, Light 41x, Dark 30x, Bias 20x, Flat 20x, DarkFlats 10x. Total exposure time 123 min. Night, no wind, 10°C, Backyard, light pollution - Bortle 5.
STACKING AND POST PROCESSING: AstroPixelProcessor (stacking, background neutralization, light pollution removal, calibrate background), Adobe Photoshop CC 2021 (black and white point settings, stretching, stars dim, enhance DSO, contrast setting). No cropped, image size 3840 x 2560 px.
Happy new year 2019 :)
Again a year has passed...so fast! It was a great year... unfortunately quite cloudy. I hope 2019 is going to be better :)
This is a rework of NGC7635 captured in september 2018.
Processing was done in Pixinsight and I mainly focused on the bubble itself, to bring out more details in the very bright parts.
Object: NGC7635 (Bubble Nebula) (2024) (SHO Palette)
NGC 7635, also called the Bubble Nebula, is a H II region, emission nebula in the constellation Cassiopeia. The bubble structure is created by stellar winds moving at over 4 million miles per hour from a massive, hot, young central star called SAO 20575 which is 45x the size of our sun. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel.
- Radius of Bubble – 3 to 5 lightyears
- Other designations - Sharpless 162 (SH2-162), or Caldwell 11
- Distance: reported by Hubble Site - 7100 light years
Details:
- Acquisition Date: 10/12/2024 to 10/24/2024
- Location: Western Massachusetts, USA
- Imaging Camera: QHY600PH-M -10°C - Mode 1(High Gain) Offset:15 Gain:56
- Telescope: Celestron EdgeHD 11 Celestron 11" Edge HD @f/7
- Focal reducer: Celestron .7x Focal Reducer, for 11 HD
- Mount: Astro-Physics AP1100 w/GTO4
- Guide scope: Celestron Off Axis Guider
- Guide Camera: ASI174m mini
- Software: Adobe Photoshop CS5, Sequence Generator Pro, PixInsight 1.8 Ripley, Aries Astro Pixel Processor
Filters:
- Chroma Ha 3nm 50mm
- Chroma OIII 3nm 50mm
- Astrodon SII 3nm 50mm
Exposure Times:
- Hydrogen Alpha (Ha): 26 x 10min. (260min) bin 1x1
- Oxygen III (OIII):26 x 10min. (260min) bin 1x1
- Sulfur II (SII):26 x 10min. (260min) bin 1x1
Total Exposure:780min. (13.0hr)
Sky Quality:
-Magnitude: 19.71
-Bortle Class 5
-1.41 mcd/m^2 Brightness
-1234.6 ucd/m^2 Artificial Brightness
NGC7635 is also known as the Bubble Nebula due to it's obvious appearance. It's located about 7100 light years from Earth and is about 7 light years across, and located in the constellation Cassiopeia. Dense pillars of hydrogen gas and dust surround the bubble.
NGC 7635 et Messier 52.
With the full moon, the sky was very bad. So, to save the night, this solution of starless can be fine.
Objet : M52
Instrument : Lunette 80 ED Esprit Super APO Sky_Watcher
Camera : ZWO ASI1600 MC / Filtre = L-EXTREME / Temp = -15°c / Gain= 139 / Offset = 21
Durée pose unitaire = 240s / Nombre de pose : 100 / Durée total = 6h40
Traitement SIRIL et PHOTOSHOP / Gestion Stellarmate
Here is a selction of some of my astro images from 2015. A wide selection of mono, narrowband and LRGB taken with two very differernt focal lengths and two different camera's.
It's been an interesting 2015 and I am really looking forward to what 2016 brings!
From top left the images are as follows. There's a clickable link to show the picture.
DWB111 - www.flickr.com/photos/swag72/18055155179/in/dateposted-pu...
IC5146 - www.flickr.com/photos/swag72/20956920656/in/dateposted-pu...
IC1805 - www.flickr.com/photos/swag72/20847210896/in/dateposted-pu...
IC1396 - www.flickr.com/photos/swag72/22841402303/in/dateposted-pu...
IC1848 - www.flickr.com/photos/swag72/23065199495/in/dateposted-pu...
IC1871 - www.flickr.com/photos/swag72/23065199495/in/dateposted-pu...
NGC7635 - www.flickr.com/photos/swag72/21672256872/in/dateposted-pu...
M1 - www.flickr.com/photos/swag72/16155482830/in/dateposted-pu...
IC434 - www.flickr.com/photos/swag72/16265877975/in/dateposted-pu...
NGC7023 - www.flickr.com/photos/swag72/18877814869/in/dateposted-pu...
Veil Complex - www.flickr.com/photos/swag72/21230850569/in/dateposted-pu...
NGC1333 - www.flickr.com/photos/swag72/23235920719/in/dateposted-pu...
NGC2359 - www.flickr.com/photos/swag72/23529756720/in/dateposted-pu...
Acquisition
-----------
DATE-LOC : 2025-10-12
EXPOSITION : 180.0 s
GAIN : 139
OFFSET : 21
CCD-TEMP : -10.0 degC
NBRE DE POSES : 138
Instrument
----------
CAMERA : ZWO ASI1600MC-Cool
TELESCOPE : Orion Quattro 200/800
LONG_FOCALE : 800.0 mm
F/D : 3.9
Conditions météo
----------------
%_Nuages : 0.0 percent
HUMIDITE : 73.0 percent
DIR_VENT : 68 deg (Est-Nord-Est (ENE))
VIT_VENT : 20.88 kph
Logiciels
---------
SOFT : N.I.N.A. 3.2.0.3011 (x64)
Traitement SIRIL + PHOTOSHOP
Auteur de l'image
---------------------
@Frank TYRLIK
Site prise de vue
-----------------
Latitude : 46.84333° N
Longitude : 0.80472° W
RC8, ASI2600MM-Pro, Astronomik SHO (6nm), HEQ5. 13h30 d'intégration, 3 SHO x 4h par sub de 5 minutes + 3 RVB x 30' par sub de 60" .
NINA, Pixinsight & XTerminator suite
Newton 150/750 avec correcteur-réducteur x0.95, MiniCam8 (0.84"/pix).
SHO par brutes de 5 minutes avec 6h30 en Ha, 2h30 pour SII et OIII puis 30 minutes pour chaque RVB (les étoiles), 13h.
NINA, PixInsight, Affinity Photo 2
Wizard Nebula, Lobster claw Nebula and many other objects
35x10min Fuji XT10 1600iso + Samyang 135 + Optolong L Extreme
vernègues terrasse
pleine lune
M52, an open star cluster, and NGC 7635, an emission nebula, lie within about 2 degrees of each other in the constellation, Cassiopeia. This picture combines two image sets captured on consecutive nights, one with a filter designed to enhance the visibility of emission nebulae, and the other without the filter to capture more "natural", vibrant star colors. Captured under dark skies near Goldendale, WA.
Telescope: William Optics ZenithStar 110mm (f/7)
Camera: Canon XSi (450D), H-alpha modified
Mount: Astro-Physics Mach1 GTO
Filter: Optolong LenHance
Integration: 100 mins (20 x 5 mins) for each of the two image sets.
Processing: PixInsight 1.9
NGC 7635, aussi nommée la nébuleuse de la Bulle (aussi désignée Caldwell 11 ou sh2-162), est une nébuleuse en émission située dans la constellation de Cassiopée. NGC 7635 a été découverte par l'astronome germano-britannique William Herschel en 1787.
Dans la partie centrale, la nébuleuse de la Pince de homard (Sh2-157), ainsi que la petite nébuleuse NGC7538. Et dans le haut de l'image, l'amas ouvert Messier 52 (M52).
NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia. It lies close to the open cluster Messier 52. In the center of the image, the Lobster Claw nebula (sh2-157) and NGC 7538.
(source: Wikipedia)
= Acquisition info =
William Optics Zenithstar 73ii (FL 430mm)
Risingcam IMX571 color
iOptron CEM26
WO Uniguide 32/120 + Touptek GPM462M
NINA & PHD2
= Séances photo =
21 et 22 juillet et 6, 7 et 10 août 2025 : Filtre IDAS NBZ --- 180s x 200 (10h)
= Traitement/processing =
Siril, GraXpert, Starnet++ & Affinity Photo 2
Temps d'exposition post-traitement : 9h15
@Astrobox 2.0 / Bortle 9
St-Jean-sur-Richelieu, Québec
AstroM1
Ha 19 x 10 min 3 x 30 min. OIII 12 x 30 min 19 x 10 min. SII 11 x 30 mins
Optics: Takahashi Baby Q FSQ-85ED F5.3
Camera: Xpress Trius SX-694 Mono Cooled to -20C
Guiding: OAG Lodestar X2
Filter: Baader Ha
Mount: Skywatcher AZ EQ6-GT EQ & Alt-Az Mount connected to the Sky X and Eqmod via HitecAstro EQDIR adapter
Image Acquisition: Sequence Generator Pro
Stacking and Calibrating: Pixinsight
Processing: Photoshop CC, Pixinsight
Well its only taken a year and about 100 attempts but finally processed a version of this I am happy with.
La Constellation de Cassiopée est riche en objets célestes: Nébuleuses et Amas principalement.
Région de la Bullet dans Cassiopée / Bubble nebula region in Cassiopeia:
- Nébuleuse de la Bulle / Bubble Nebula (NGC7535, Caldwell11 or Sh2-162)
- Nébuleuse de la Lagune du Nord / Northern Lagoon Nebula (NGC7538 or Sh2-158)
- Nébuleuse de la Pince de homard / Lobster Claw Nebula (Sh2-157)
- Amas ouvert Sel-et-Poivre / Open cluster of stars Messier 52 (M52 or NGC7654)
- Amas de la Pointe de flèche / Open cluster of stars NGC7510
L'image contient également la Nova Cassiopeiae 2021 (V1405 Cas) qui est apparue en mars 2021.
Nikon D5300 Stock + Zenithstar 73
iOptron CEM26 + iPolar
SVBony CLSfilter
ZWO ASI224MC + WO Uniguide 120mm
3 nuits : 25, 26 et 30 juillet 2022
100 x 5min = Exp = 500min => Stack 90% = 450min (7h30min exp.)
ISO400 -- 31 flats No Offset No Dark
AstroM1
(rsi3x1.3)
NGC 7635 a.k.a. Bubble Nebula
……………………………................
Space is full of things / situations / events that intrigue us, NGC7635 being one of those. In short and for everyone to understand, a massive star is caught in a "bubble". This star is almost 50 times larger than the Sun and the emitted radiation is about 1 million times stronger than it, producing a stellar wind that exceeds 5 million km per hour, wind that pushes dust and gas outward creating thus a shell or a bubble, a situation that obviously led to the popular name of this nebula.
As general information, the Bubble Nebula is an emission nebula with a diameter of about 7 light-years, located in the constellation Cassiopeia, at a distance of over 7000 light-years from Earth and it was discovered in 1787 by the British astronomer, William Herschel.
Specialists believe that in a short time ( meaning in the next 10-20 million years), the "guilty" star will consume its energy resources, and will explode, forming a supernova.
Equipment and settings:
Mount: SW EQ6R
Telescope: SW 150/750 PDS
Camera: ASI 533MM Pro
Filters: SHO Astrodon 5nm
Integration: 15h45’
Edit in Pixinsight.
Location: my Bortle 6+ backyard
Reprocess of my data from September 2019. Very few data, especially of SII.
Taken with my 10" Newton and SBIG STF-8300 with 6nm Astronomik filters. Fully processed in Pixinsight.
Ha: 9 x 1200 sec
OIII: 4 x 1200 sec
SII: 3 x 1200 sec
Total integration time: 5.3 hours
NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel. (Wikipedia).
Acquisition: 20 & 25/11/16
Chiswick, London, UK.
10.5 Hours total Exposure (SII:Ha:OIII)
9x1800sHa, 9x1200sHa, 4x1200sSII, 5x1200sOIII
SII and OIII bin 2x2
Equipment:
T: Takahashi FSQ106ED @ f/8
C: QSI683ws Mono CCD @-30C
F: Astronomik Ha (6nm)
M: Celestron Advanced Vx
G: QHY5-II
Ha 19 x 10 min 3 x 30 min. OIII 12 x 30 min 19 x 10 min. SII 11 x 30 mins
Optics: Takahashi Baby Q FSQ-85ED F5.3
Camera: Xpress Trius SX-694 Mono Cooled to -20C
Guiding: OAG Lodestar X2
Filter: Baader Ha
Mount: Skywatcher AZ EQ6-GT EQ & Alt-Az Mount connected to the Sky X and Eqmod via HitecAstro EQDIR adapter
Image Acquisition: Sequence Generator Pro
Stacking and Calibrating: Pixinsight
Processing: Photoshop CC
I am really happy with my First auto-focus image with my Celestron 9.25 Edge HD. This is the Bubble Nebula also known as NGC7635 is an emission nebula located 8000 light-years away in the Constellation Cassiopeia.
Equipment:
Telescope - Celestron 9.25 Edge HD
Imaging Camera- Qhy268m
Mount - Sky-watcher EQ6-R Pro
Software:
Sequence Generator Pro
Pixinsight
Lightroom
Photoshop
Lights:
R-30x60sec
G-30x60sec
B-30x60sec
Sii-50x300sec
Ha-40x300sec
Oiii-45x300sec
35 Darks
100 Bias
Total integration 12.75 hours
NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star, SAO 20575. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. (Celestron EdgeHD800, ZWO ASI2600MM, ASIAIR, EAF, EFW, Skywatcher HEQ5, Antlia SHO 3nm, Pixinsight, Photoshop).
2 hours 10 mins, 10 min subs at 1x1 binned, 7nm Ha
Scope - Takahashi Sky 90 with reducer
CCD - Atik 460exm
Michael L Hyde (c) 2016
Bubble Nebula and Open cluster M52 in the Hubble palette. Hoping to produce a colour blend of this in the near future.
TS APO65Q Telescope
Atik 490EX CCD Camera
QHY5L Guide Camera on 90x50 finder scope
Baader Ha, OIII and SII narrow band filters.
Artemis Capture.
PHD2 Guiding.
All processing Pixinsight incl stacking (image integration) plus some actions in PS
Ha=x12 600 Seconds
OIII=x12 600 Seconds
SII=x12 600 Seconds
Total of 6 hours July and August 2016
Une région riche en objets celestes / A rich constellation with many DSOs
==
NGC 7635, aussi nommée la nébuleuse de la Bulle ou Caldwell 11, est une nébuleuse en émission située dans la constellation de Cassiopée. NGC 7635 a été découverte par l'astronome germano-britannique William Herschel en 1787.
M52 (ou NGC 7654) est un amas ouvert situé dans la constellation de Cassiopée. Il a été découvert par Charles Messier en 1774, qui l'inclut dans son catalogue le 7 septembre 1774.
Aussi une partie de la nébuleuse de la Pince de homard / Lobster Claw Nebula (Sh2-157)
NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia. It lies close to the open cluster Messier 52.
Messier 52 or M52, also known as NGC 7654 or the Scorpion Cluster, is an open cluster of stars in the highly northern constellation of Cassiopeia.
(source: Wikipedia)
= Acquisition info =
William Optics Zenithstar 73ii (FL 430mm)
Risingcam IMX571 color
iOptron CEM26
WO Uniguide 50/200 + ZWO ASI224MC
NINA & PHD2
= Séances photos =
8, 19 et juillet 2024 : Filtre IDAS NBZ -- 75 x 180sec
= Traitement/processing =
Siril, StarNet++, GraXpert & Gimp
Exposition après traitement : 3h35
@Astrobox 2.0
Échelle de Bortle, niveau 9
St-Jean-sur-Richelieu, Québec
AstroM1
OBJECT: NGC 7635, The Bubble nebula, Constellation Cassiopeia, apparent magnitude 10, apparent dimension 15’ x 85’, 7100 - 11000 ly away.
CALIBRATION: RA 23h 21 min, DEC 61°12’, FOV approx 39’x 23’, Field radius 0,39°, Pixel scale 1,15 arcsec/px, Image size 2000 x 1333 px, Cropped 16x.
GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor Z 400/4,5 + TC2x = 800/9, Kolari H+ Clip in filter, UV lens filter, Dew heater strip, tracking mount iOptron HEM27EC - ipolar alignment, No auto guiding.
ACQUISITION: August 3 and 5, 2024 (2 sessions), Struz, CZ, Subexposure 120s, f 9, ISO 3200, Interval 10 s, RAW-L, Lights 29+51x, Bias 22x, Flats 22x, Total exposure time 160 min. Night, no Moon, no wind, 8° C, Backyard - Light pollution - Bortle 5.
STACKING AND POST PROCESSING: Stacking in Pixinsight (WBPP), post processing in Pixinsight ( DynamicCrop, BlurXTerm, NoiceXTerm, streching via HistogramTrans, and Adobe Photoshop CC 2024 (final colour and brightness tuning)
OBJECT: NGC 7635, The Bubble nebula, M52 Cluster left down, Constellation Cassiopeia, apparent magnitude 10, apparent dimension 15’ x 85’, 7100 - 11000 ly away.
CALIBRATION: RA 23h 21 min, DEC 61°12’, FOV approx 2,1°x 1,4°, Field radius 1,3°, Pixel scale 1,14 arcsec/px, Image size 3840 x 2560 px, Cropped 1,5x.
GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor Z 400/4,5 + TC2x = 800/9, Kolari H+ Clip in filter, UV lens filter, Dew heater strip, tracking mount iOptron HEM27EC - ipolar alignment, No auto guiding.
ACQUISITION: August 3 and 5, 2024 (2 sessions), Struz, CZ, Subexposure 120s, f 9, ISO 3200, Interval 10 s, RAW-L, Lights 29+51x, Bias 22x, Flats 22x, Total exposure time 160 min. Night, no Moon, no wind, 8° C, Backyard - Light pollution - Bortle 5.
STACKING AND POST PROCESSING: Stacking in Pixinsight (WBPP), post processing in Pixinsight ( DynamicCrop, BlurXTerm, NoiceXTerm, streching via HistogramTrans, and Adobe Photoshop CC 2024 (final colour and brightness tuning)
Object: NGC7635 (Bubble Nebula) (2019) (HST Palette)
NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region emission nebula in the constellation Cassiopeia. The bubble is created by the stellar wind from a massive, hot, young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by Friedrich Wilhelm Herschel. Distance from Earth ~11000 light years. This widefield also includes M52 aka NGC 7654, an open cluster of stars in the northern constellation of Cassiopeia, NGC7538 the Northern Lagoon Nebula aka Brain Nebula – Dreyer’s Object and part of the Lobster Claw Nebula (SH2-157).
This image was done using the HST or Hubble Space Telescope Palette which is accomplished by combining sub frames using three narrowband filters that capture light produced by glowing hydrogen (Ha), oxygen (OIII) and sulfur (SII) present in the nebula. Green is assigned to hydrogen, blue to oxygen and red to the sulfur.
Acquisition Date: 9/28/2019 – 09/30/2019
Location: Chester Basin, Nova Scotia
Camera: FLI ML16200 @ -20°C
Telescope: Astro-TECH AT130 with APM Riccardi APO Flattener 1.0x
Mount: Astro-Physics AP1100
Guide scope: Celestron Off Axis Guider
Guide Camera: ASI174 mini
Filters:
-Chroma 3 nm Hydrogen Alpha (Ha): 10 x 30min. (300min) bin 1x1
-Chroma3nm Oxygen III (OIII):10 x 30min. (300min) bin 1x1
-Astrodon 3nm Sulfur II (SII):8 x 30min. (240min) bin 1x1
Total Exposure:840min. (14hr)
Limiting Magnitude: 6.4
This is probably the first of many objects I will be revisiting to add some new data to existing data.
I’ve replaced the old Oiii data and added 25 Ha 6min subs to the existing 24 5min subs I took back in 2017 giving me 4.5h of Ha data. Was it worth it? At first no! but after the 4th attempt I realised it was me over processing the image, again! will I never learn, probably not. I'm happy with it now.
Note:
The Oiii data needed replacing as the original was not taken with a CCD filter.
NGC7635 the Bubble Nebula in the constellation Cassiopeia. It is located at a distance of between 7,100 and 11,000 light years with a visual Magnitude of 10. The "bubble" is created by the stellar wind from a massive hot 8.7 magnitude young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star.
EQUIPMENT:-
Telescope Meade 6000 115mm and AZ-EQ6 GT
ZWO ASI1600mm-Cool cmos camera
Orion Mini Auto Guide
Astronomik 12nm Ha Filter
Astronomik 6nm Oiii Filter
Chip Temp Cooled to -20 degC
IMAGING DETAILS:-
NGC7635 Bubble Nebula (Cassiopeia)
Ha Gain 139 (Unit Gain)
Oiii Gain 200
24 Ha subs@300sec (2h) Data from 2017
25 Ha subs@360sec (2.5h)
24 Oiii subs@300sec (2h)
Total imaging Time 6.5h
Dithering
20 Darks
20 Flats
PROCESSING/GUIDING SOFTWARE:-
APT "Astro Photograph Tools"
DSS
PS CS2
NGC7635, the Bubble Nebula, is located in the constellation of Cassiopeia. The bubble is created by stellar winds from a young and massive star central star. This star also causes the surrounding hydrogen gas to glow red.
Star Adventurer 2I
ZWO ASI294MC Pro camera
Baader Neodymium moon and sky glow filter
Sigma 150-600 lens at 600mm
240 2-minute exposures stacked in DSS
SiriL - color calibration
Photoshop / Starnet v2 for the balance of processing
NGC7635 - The Bubble Nebula - A narrowband image in the Hubble Palette. Also known as Sharpless 162 and Caldwell 11. The Bubble Nebula can be found in the constellation Cassiopeia, not far from the Open Cluster Messier 52. This area is a rich HII region and the bubble itself was created by stellar winds from a massive hot blue Wolf-Rayet star, AO 20575, that shed its material about 300,000 years ago to form the bubble. This star is 44 times larger than our sun. The Bubble itself is found in a massive molecular cloud which contains the expansion of the bubble and is excited by the same star, causing it to glow as well.
This image is the result of 25x5min exposures through Ha, O3 and S2 narrowband filters - for a total integration of about 6.25 hours. This was taken over two nights in the past week when a cold Canadian airmass pushed the smoke plume from the fires out west down south of us. I would like to get more integration but I only have access to it for a few hours as it rises above my tree line and before it sets behind another set of trees.
Here are the details for this image:
25 x 500 seconds, bin 1x1 @ -15C, unity gain, ZWO Gen II Ha Filter
25 x 500 seconds, bin 1x1 @ -15C, unity gain, ZWO Gen II O3 Filter
25 x 500 seconds, bin 1x1 @ -15C,unity gain, ZWO Gen II S2 Filter
50 Bias exposures
25x500 seconds Dark exposures
50 Ha Flats
50 O3 Flats
50 S2 Flats
Scope: Astrophysics 130mm Starfire F/8.35 APO refractor
Guide Scope: Televue 76mm Doublet
Camera: ZWO ASI1600mm-pro with ZWO Filter wheel with ZWO filter set
Guide Camera: ZWO ASI290Mini
Focus Motor: Pegasus Astro Focus Cube 2
Camera Rotator: Pegasus Astro Falcon
Mount: Ioptron CEM60
Polar Alignment: Polemaster camera
Capture Software: PHD2 Guider, Sequence Generator Pro controller
Image Processing: Pixinsight, Photoshop, along with Coffee, extensive processing indecision and second guessing, frequent processor's regret, significant frustration and the occasional swear word...…..
Telescope: Celestron Edge HD 800 with 0.7 reducer
Camera: ZWO ASI 071MC Pro
Exposure: 36 x 10min @ unity gain -5°C
Filters: Optolong L-extreme filter
Mount: iOptron CEM60
Location: Beveren-Waas Belgium
Date: 2025/08/25
NGC7635 Bubble Nebula captured in LRGB, Ha. Taken from PixelSkies, Spain www.pixelskiesastro.com
NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star, SAO 20575 (BD+60°2522). The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel.
Lum 23x900Secs
Red 10x900Secs
Green 7x900Secs
Blue 8x900Secs
Ha 22x1800 Secs
17.5 Hours in total.
Equipment used:
Telescope: Tec 140 F7
Camera: Xpress Trius SX-694 Mono Cooled to -5C
Image Scale: 0.95
Guiding: OAG
Filters: Astronomik LRGB, Ha 6nm
Mount: iOptron CEM60 "Standard" GOTO Centre Balanced Equatorial Mount
Image Acquisition: Sequence Generator Pro
Stacking and Calibrating: Pixinsight
Processing: Pixinsight 1.8, Photoshop CC
I forgot I Hadn’t gone public with this one. This is the same as my previously uploaded image but with stars removed.
NGC7635 the Bubble Nebula in the constellation Cassiopeia. It is located at a distance of between 7,100 and 11,000 light years with a visual Magnitude of 10. The "bubble" is created by the stellar wind from a massive hot 8.7 magnitude young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star.
EQUIPMENT:-
Telescope Meade 6000 115mm and AZ-EQ6 GT
ZWO ASI1600mm-Cool cmos camera
Orion Mini Auto Guide
Astronomik 12nm Ha Filter
Astronomik 6nm Oiii Filter
Chip Temp Cooled to -20 degC
IMAGING DETAILS:-
NGC7635 Bubble Nebula (Cassiopeia)
Ha Gain 139 (Unit Gain)
Oiii Gain 200
24 Ha subs@300sec (2h) Data from 2017
25 Ha subs@360sec (2.5h)
24 Oiii subs@300sec (2h)
Total imaging Time 6.5h
Dithering
20 Darks
20 Flats
PROCESSING/GUIDING SOFTWARE:-
APT "Astro Photograph Tools"
DSS
PS CS2