View allAll Photos Tagged CrescentNebula
Taken using:
Altair Ascent 80ED refractor with 0.8x reducer/flatenner at f/5.6
Altair Hypercam 533C PROTEC OSC Binned 1x1
SkyTech LPRO Max filter
52min total (2min subs)
Processed with Deep Sky Stacker and Affinity Photo
Roma,Bortle 8.8/10,Integrazione di 4 sessioni che vanno dal mese di Aprile al mese di Giugno per un totale di 11 ore.La nebulosa Crescente(NGC6888 o C27)è una nebulosa a emissione nella costellazione del Cigno,si trova a circa 5000 a.l dalla terra ed è stata scoperta da William Herschel nel 1792.
Dati dell Immagine:167 Light da 180" a gain 120 ed a una temperatura di -10°. 81 Dark. 81 Darkflat. 81 Flat.
Attrezzatura utilizzata:TS 71 SDQ Quadrupletto,Skywatcher Eqm35 Pro,Zwo Asi 294MC Pro,Optolong L-Enhance,Asi Air Pro,Guida con Artesky Ultraguide 32mm e Zwo Asi 224MC.Elaborata con Pixinsight e Photoshop.
Atik 314L+
AstroProfessional 102mm refractor (focal 714mm)
HEQ5 Pro autoguided
Halpha : 1 x 5 min
Processed with Iris (dark, flat, offset, DDP)
Blur with Photoshop
Location : Méribel (Savoie - FRANCE)
Date: 08/08/2010 at 02h00 UT
Reprocessed data.
Total of 5.9 Hours so far. I would like to get more though.
HA 9 x 900s
OIII 12 x 900s
SII 2 x 1200s
Bin 1x1
No darks or flats
40 x Bias
SW Equinox 80 APO and Flattener
EQ5 Pro Synscan GOTO.
Guiding: SW 9x 50 finder guider and QHY5.
Atik 314L+
Baadar HA 7nm, OIII 8.5nm and SII 8nm
Using: Artemis capture, PHD, DSS, CCD Sharp, Nebulosity 3 and Photoshop CC.
Vicky N
Leicester
9 x 10 min, binned 2x2.
Acquired Maxim DL5, processed Photo shop CS2.
Sky Watcher EQ6 Pro mount. William Optics FLT132mm main scope, Scopos 80mm guide scope. Starlight Xpress SXV M25C camera, SX Lodestar guide camera, Astronomik Hydrogen Alpha filter. Seeing waxing gibbous moon. Staines, Middx,UK.
12-10-08
The Crescent Nebula (NGC 6888), in Cygnus, is an emission nebula whose gas originates from its exciting source, a Wolf-Rayet star (a massive, evolved and extremely hot star). All around it are faint, diffuse nebulae belonging to the Cygnus-Norma arm.
This approx. 2x3 degree field is the result of the stacking of 45 two-minutes exposures shot with a modified Canon EOS 350D at 800 ISO, fixed on a TMB 80mm refractor. A simple tonemapping process was achieved in order to reveal the faintest nebulae visible. The recently discovered Soap Bubble nebula, a very faint planetary nebula, is also in the field but was not detected.
The Crescent Nebula is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It was discovered by William Herschel in 1792. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000 to 400,000 years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures.
Source: Wikipedia
So the OIII and Ha data are blended with the RGB picture and the Ha was blended with the luminosity. Basically I wanted the Bicolor with good stars.
I figured I would try to image the Crescent from my driveway, given the abnormally clear skies.After lots of exposure and lots of stretching, this is the result... As can be seen ghere, the Crescent lies in an area with lots of nebulosity.
天津一周圍區域
IC 1318
Sadr Region
眉月星雲
NGC6888
Crescent Nebula
M29
IC 4996
NGC 6914
NGC 6910
IC 1311
其實這次上山主要給自己的任務
就是完成這1*2的馬賽克拼貼
過去我也曾試過幾次馬賽克
但幾乎都是憑運氣
白天風景很好馬
晚上的話就很困難了
看起來應該要同一晚或同一地點
天氣狀況良好
甚至仰角也差不多的狀況下
比較容易成功
看起來這次就好多了
沒有明顯的邊界
未來有機會看能不能1*3
或是2*2
但感覺沒買付費軟體會GG...
這晚
我的拍攝成功了
但我的女主角
仍未抵達
2-Frame Mosaic
4.31 x 5.09 deg
Date：2021/9/7
Weather：Clear
Location：Kunyang, Mount Hehuan , Nantou, Taiwan
Camera：Canon 6D(mod)
Lens/Telescope：
William Optics ZenitherStar 81+
Flat 6A III
Mount：iOptron CEM40
Guiding：
William Optics Uniguide+ZWO ASI120MM mini+PHD2
Parameter： ISO1600
Exposure time：5min*15, 5min*19
Dark, Flat, Bias
Software：DSS+Image Composite Editor+PS+Starnet++
Une partie de la nébuleuse du Croissant (le numéro 27 du catalogue Caldwell, aussi numérotée NGC 6888). C'est une bulle de Wolf-Rayet : un grand nuage de gaz éjecté par une étoile de type Wolf-Rayet. L'étoile en question est l'étoile qui apparaît bleue, en haut à droite de l'image. C'est une étoile très massive, peut-être 21 fois la masse du Soleil. Quand elle est devenue une géante rouge (il y a 120000 à 240000 ans) elle a commencé à expulser de la matière, qui forme cette "bulle" visible autour d'elle. Elle est maintenant dans une phase de courte durée, dite phase Wolf-Rayet, où sa surface extrêmement chaude émet des ultraviolets, d'où sa couleur bleue. Elle finira sa vie en supernova, d'ici quelques centaines de milliers d'années.
天津一周圍區域
IC 1318
Sadr Region
眉月星雲
NGC6888
Crescent Nebula
M29
IC 4996
這次上山第一晚天氣不太好
把儀器隨便對一對就隨便拍一拍
結果回來發現跟第二晚拍的疊不起來...
原本想說完蛋啦
後來發現第二晚還有再補拍這區
而且第一晚拍的很多雲
完全暈開柔焦
完全不能用
不過第二晚的話原本想拍南冕
但上半夜南邊太多人走來走去
而且架太北邊會拍到人
那就算啦回來好好拍這裡
早知道那第一晚就應該去武嶺拍照
然後好好睡覺才是XD
天津一這區往往都是遺珠
等了3年總算有機會拍到了
就像是
我一直傻傻地
在走廊等你來讀書
Date：2021/9/7
Weather：Clear
Location：Kunyang, Mount Hehuan , Nantou, Taiwan
Camera：Canon 6D(mod)
Lens/Telescope：
William Optics ZenitherStar 81+
Flat 6A III
Mount：iOptron CEM40
Guiding：
William Optics Uniguide+ZWO ASI120MM mini+PHD2
Parameter： ISO1600
Exposure time：5min*15
Dark, Flat, Bias
Software：DSS+PS+Starnet++
Finally got a cloudless night and could aquire 2,5 hours of data. The result is stunning and i can't wait to take the Oiii and S2 channels to combine it to a multicolor image.
Image Details:
51x180s Light Frames
50x10s Flat Frames
50x180s Dark Frames
200x Bias Frames
Canon Rebel XT/Astronomik 6nm Hydrogen alpha filter
26 X 300 seconds @ ISO1600
William Optics ZS70ED @ f/4.8
The Crescent Nebula (NGC 6888 or Caldwell 27) is an emission nebula in the Cygnus constellation, about 5000 light years away. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 400,000 years ago.
The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray emitting temperatures.
description source wikipedia
Constellation Cygnus
Right ascension 20h 12m 7s
Declination +38° 21′ 30″
Image Details
Lights Ha-Filter - 34x180s @ -10°C Gain 100 HCG
Lights Oiii-Filter - 62x180s @ -10°C Gain 100 HCG
Lights Sii-Filter - 24x180s @ -10°C Gain 100 HCG
Flats - 10x
Bias - 100x0.2s
Equipment
Mount - Skywatcher EQ6-R
Telescope - TS-Optics CF-APO 90 mm
Camera - Altair Astro 26m
Motorfocus - Pegasus FocusCube v2
Filter Wheel - Starlight Xpress 7x 36mm
Filters - Chroma Set 36mm: L,R,G,B,Ha (5nm),SII (3nm),OIII (3nm)
GuideCam - Altair 290c
GuideScope - TSOptics 50mm ED
Flatbox - DeepSkyDad Flap Panel
Software
N.I.N.A. - Nighttime Imaging 'N' Astronomy
PHD2
Pixinsight
Preprocessing for all Filters and Panels
Flat Calibration
Flat ImageIntegration
Light Calibration
SubframeSelector to select best set of images
StarAlignment
Light ImageIntegration
Drizzle Integration
Processing
Linear
Dynamic Crop
Dynamic Background Extraction
EZ Deconvolution on Ha & Oiii
Non-Linear
Pixelmath to combine the channels
Lots of Curve Adjustments
07/11/2024 and 08/11/2024 - Sadr Region featuring Crescent Nebula C27
This was my first attempt at a composite image of multiple nights and I think it turned out pretty well. This is also my current photo with the longest exposure I've ever tried, however I'm running into the issue where my camera dies as I'm taking the photos so I'll probably need to buy a secondary battery eventually.
INFO:
Exposure Time: 3h 12m (128x90s)
ISO: 640
Aperture: f/4.9
Camera: Nikon D850
Mount: SkyWatcher HEQ5-Pro
Telescope: William Optics Redcat 71 WIFD
ZWO 80mm F/7.5 FF APO - AM5n - Asiair - Asi 2600MC Pro
45min integration - Ha+OIII+LPF - PixInsight
Bortle 5 - Seeing 4
Reworked the data from GSSP and here is the nearly full view of the stack. I've learned quite a bit from RBA's PI workshop and have applied much of what I learned here. I'll probably come back to this data set a few more times before I'm done.
Some things yet to figure out:
1. Try to register/stack in PI. Currently, this is from source in DSS.
2. Figure out robust ways to generate and use star masks to keep stars small. I kept them small here, but a lot of the little ones still came up.
3. Figure out better noise reduction techniques.
I'm pleased that the nebulosity came up so well.
10 minute subs at 400 ISO with a cooled DSLR - full spectrum modified Pentax K10D.
Prime focus on Stellarvue SV4 using flattener and Baader Moon and Skyglow filter
Stacked with 80% best out of 71 subs in DSS 3.3.3 beta 47
Stacking broken up by temperature and camera rotation in an attempt to control amp glow.
Processing in PI for DBE, MT, Stretching.
Annotated in PI as well.
Here are the results from the plate solve:
Referentiation Matrix (Gnomonic projection = Matrix * Coords[x,y]):
-0.000015711578 -0.000531392482 +0.671504498025
+0.000530938144 -0.000015467146 -0.963770026367
+0.000000000000 +0.000000000000 +1.000000000000
Resolution ........ 1.913 arcsec/pix
Rotation .......... 88.295 deg
Focal ............. 582.24 mm
Pixel size ........ 5.40 um
Field of view ..... 1d 58' 0.1" x 1d 17' 5.7"
Image center ...... RA: 20 12 17.874 Dec: +38 21 08.17
Image bounds:
top-left ....... RA: 20 15 40.674 Dec: +37 23 07.99
top-right ...... RA: 20 15 28.212 Dec: +39 21 02.44
bottom-left .... RA: 20 09 12.726 Dec: +37 20 55.20
bottom-right ... RA: 20 08 49.603 Dec: +39 18 45.93
ZWO 80mm F/7.5 FF APO - AM5n - Asiair - Asi 2600MC Pro
30min integration - Ha+OIII - PixInsight
Bortle 5 - Seeing 4
NGC6888 眉月星雲 crescent nebula
PN G75.5+1.7 肥皂泡泡星雲 soap bubble nebula
HOO + RGB stars
Ha 600s x15 / O3 600s x18 / RGB 60s x60
Total 6.5 hrs
Takahashi Epsilon 160ED
ZWO 6200MM with Chroma filter
Rainbow Astro RST135 + OAG on 174mini
LIVA Q2 / Pegasus Ultimate powerbox / ZWO EAF
NGC 6888 is commonly known as the Crescent Nebula which is one of the more intriguing objects in our galaxy. This annular nebula circumscribes a 7.5- magnitude Wolf-Rayet star known as HD 192163. Wolf-Rayet stars are extremely luminous and hot stars that shed mass at enormously high rates, in many cases after passing through a supergiant stage. This material travels at speeds as high as 3,000 km per second until it smashes into gases that previously constituted the star's outer atmosphere. The Crescent has long been believed to be the result of such a collision. Studies show it to be a prolate ellipsoid, 25 by 16 light-years across, that is tilted at a 45 degree angle to our line of sight. The Einstein and Rosat spacecraft revealed that X-rays emanate not from the nebula's cavity but from its visually brightest parts. The X-ray emissions originate in filamentary structures close to the nebula's inner border, suggesting that they are generated as material cools after being shocked by the fast wind for HD 192163. The nebula's outer edges, by contrast show the first point of contact between the advancing Wolf-Rayet wind and the atmosphere of the former red supergiant.
Acquired 11-Jul-10, 2 hours 40 min @ ISO 1600, flats, darks, bias
New Moon, temperature ranged 84 - 75⁰F
Modified XSi WO ZS80FD with AstroTech FF and IDAS LPS at F6.9 on Celestron CGE mount, guided with PhD Guiding using QGuider on an ST80
La nébuleuse du croissant
______________________________
Gear - Matériel 🔭
Mount : Skywatcher EQ6-R
Scope : TS Optics 94 EDPH
Guiding : ZWO ASI290MM Mini on ZWO OAG
Imaging camera : ZWO ASI071MC Pro
Filters : Optolong L-extreme
Picture - Prise de vue 📷
Total integration : 9h35
Light : 115 x 300s
Dark : 30
Flat : 20
Gain : 90
Sensor temp : 0°C
Software - Logiciels
Imaging session : Nina
Guiding : PHD2
Stacking : PixInsight
Processing : PixInsight, Photoshop
This is just true color so I can't go very deep.
8x7minute exposures for a total of 56 minutes. Maybe I will combine it with my narrow band.
8" Newtonian, Modified Canon 500D, Atlas eq mount, star shoot autoguider (PHD), 2" Orion Sky Glow Imaging Filter. Taken in my backyard in Anchorage, AK. Processed with DSS