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The Crescent Nebula is located in the constellation of Cygnus, I have attempted to image this in the past without success, but this time I managed to get quite a lot of data to play with, the data was acquired on various nights in September, October and November 2018
Image Details:
Red Channel - SII Data - 89x300S
Green Channel - Ha Data - 64x300S
Blue Channel - OIII Data - 109x300S
101 Darsk, Flats and BIAS Frames used
Equipment Used:
Imaging Camera: QHY183M Mono ColdMOS Camera at -20C
Imaging Scope: Skywatcher Quattro 8" F4 Newtonian
Guide Scope: Skywatcher Finder Scope
Guide Camera: QHY5L-II
Mount: Skywatcher EQ8 Pro GEM Mount
Focuser: PrimaluceLabs ROBO Focuser
Filterwheel: StarlightXpress 7x36mm EFW
Filters: Baader 7nm Ha, SII and OIII
Acquision Software: Main Sequence Software Sequence Generator Pro
Processing Software: Pixinsight 1.8.5
2nd process
Astrotrac 360
Nikon D810 + 200-500mm @400mm
40x3min + 30x1min subs
No guiding
this is a good test of the Nikkor 200-500 mm coma @ 400mm wide open. Pretty bad.
M66 LRGB
Planewave 17” CDK
Camera: FLI ML16803
Filter: Chroma L,R,G,B
Focuser: IRF90
Focal Length: 2939mm
Focal Ratio: f/6.8
Mount: 10 Micron GM3000
Location: Deep Sky West, Chile
6,3h of LRGB data, combination in PixInsight done:
L: 24 x 300sec
R: 15 x 300sec
G: 16 x 300sec
B: 21 x 300sec
Captured from Grand Mesa Observatory, both the WO 12" RC and QHY600 Mono CMOS are coutesy of and recently supplied by William Optics. I was so encouraged by these great results and with permission from William Optics this setup is now available as an option "System 5" on GMO's subscription plans.
The Eagle Nebula was captured over 2 nights using the QHY600M with just 4 x 300 second exposures (bin 1x1) each channel LRGB and 8 x 600 second H-Alpha (bin 2x2). The William Optics WO12 RC is currently setup using the William Optics .8 reducer providing a 1971mm focal length @ F6.4. Bin 1x1 the image scale is 0.39 arcsec/pix and Bin 2x2 the image scale is 0.79 arcsec/pixel.
Total acquisition time 2.66 hours.
View High Resolution HaLRGB
View High Resolution H-Alpha
Filters used were supplied courtesy of Optolong
Plate Solve Information
Referentiation matrix (world[ra,dec] = matrix * image[x,y]):
+1.09243694e-04 -9.03580643e-07 -5.20203876e-01
+8.72695046e-07 +1.09320113e-04 -3.53349451e-01
WCS transformation ....... Linear
Projection ............... Gnomonic
Projection origin ........ [4788.284896 3194.021007] px -> [RA: 18 18 54.820 Dec: -13 50 32.63]
Resolution ............... 0.393 arcsec/px
Rotation ................. 179.514 deg
Observation start time ... 2020-04-25 09:58:01 UTC
Observation end time ..... 2020-04-25 10:03:01 UTC
Focal distance ........... 1971.28 mm
Pixel size ............... 3.76 um
Field of view ............ 1d 2' 47.5" x 41' 53.2"
Technical Details
Captured and processed by: Terry Hancock
Location: GrandMesaObservatory.com Purdy Mesa, Colorado
Dates of Capture April 26 and 27th 2020
HA 80 min 8 x 600 sec
LRGB 80 min 4 x 300 sec
Filters by Optolong
Camera: QHY600 Monochrome CMOS
Gain 60, Offset 76 with Dark, Bias and Flat Frames
Optics: William Optics 12" RC @ F6.4
EQ Mount: Paramount ME
Image Acquisition software Maxim DL6 Pre Processing in Pixinsight Post Processed in Photoshop CC
The incandescence of the Eagle Nebula is laced with intricate dark lanes, globules, and huge clouds of dust which shroud ongoing star formation from direct view. The most prominent dark structures are the so-called “Pillars of Creation”, three long fingers of gas and dark dust nearly ten light years long. The Pillars are a field laboratory for the study of star formation and have been examined intensely by astronomers at visible, infrared, and ultraviolet wavelengths. Within the Pillars are much smaller, warmer, and denser regions called evaporating gaseous globules (EGGs), some of which contain just a few solar masses. The EGGs are ground zero for star formation, though it’s difficult to catch these new stars in the act of igniting because they remain obscured by cloaks of dark dust. EGGs located near bright stars are elongated by winds of light and charged particles into what look like schools of celestial tadpoles.
The stars within the Eagle Nebula appear to be in an intermediate state. Stars within the Pillars and other dusty regions remain obscured, while a cluster of some 400 new stars clearly appears in a more transparent section of the nebula. The largest of these stars has a mass some 80 times that of our Sun and the luminosity of perhaps a million Suns. The cluster formed just 2 to 5 million years ago. The nebula itself is only slightly older.
The light we see from the Eagle Nebula and its associated stars left some 7,000 years ago, but some astronomers suspect the Pillars of Creation may have already been obliterated when a massive young star within the nebula detonated as a supernova. The Spitzer Space Telescope detected evidence of a patch of hot gas near the Pillars which may have been caused by such an event about 8,000 years ago. Information from our e-book cosmicpursuits.com/astronomy-courses-and-e-books/armchair...
For discussion in the Pixinsight forum...
pixinsight.com/forum/index.php?topic=3814.0
ATrous Wavelets applied to linear data..
Best version...so far
Previous work
M16 in LSHO narrowband. FSQ-106EDXIII, QHY-183MM, 2 hr 45 min exposure, Pixinsight processed as LSHO.
RA: 03h47m00.00s
Dec: 24°07'01.20"
Constellation: Taurus
Designation: M45
Image Details: 180x90S at Gain 0
Darks: 101 Frames
Flats: 101 Frames
Bias: 201 Frames
Acquisition Dates: Dec. 12, 2020 , Jan. 9, 2021 , Feb. 9, 2021 , Feb. 10, 2021
Total Capture time: 4.5 Hours
Equipment Details:
Imaging Camera: ZWO ASI Cameras ASI6200MC Pro 62mpx Full Frame OSC
Imaging Scope: Sharpstar Optics 15028HNT Hyperboloid Astrograph
Guide Camera: Starlight Xpress Ltd Lodestar X2
Guide Scope: 365Astronomy.com 280mm Guide Scope
Mount: Sky-Watcher EQ8 Pro
Focuser: Primalucelab Sesto Senso V2
Filter: Optolong Astronomy Filter L-Pro 2"
Power and USB Control: Pegasus Astro USB Ultimate Hub Pro
Acquisition Software: Main Sequence Software. Sequence Generator Pro 3.2
Calibration and Stacking: Astro Pixel Processor
Processing Software: PixInsight 1.8.8 and EZ Processing Suite for Star Reduction
Full Size Image
Astrobin: www.astrobin.com/1m3rgl
Heart Nebula with a Rokinon 135
Camera: QSI 583 WSG5
Filter: Astrodon RGBH
Focuser: Robofocus
Focal Length: 135mm
Focal Ratio: f/2.0
Pixel Size: 5.4μm
Image Scale: 8”
Mount: Astro-Physics Mach1 GTO
Location: Deep Sky West, New Mexico
10h of RGBH data, integration in PixInsight done:
R: 32 x 300sec
G: 29 x 300sec
B: 32 x 300sec
Ha: 27 x 300sec
I have always been fascinated by these two galaxies and I Have imaged them before, this is however my longest imaging session to date, even managed ot pick up some of the Flux Nebula around the two galaxies, this is the last image produced in the 2018/2019 season for me
This will also be the last image put together using Baader filters
Imaging Details:
201x60S in Red, Green and Blue filters
101x150S in Red, Green and Blue Filters
101x300S in Red, Green and Blue Filters
101 Dark, Flat and Flat Darks Applied
Total Imaging time: 47.92 Hours
Imaging Dates: Dec. 14, 2018, Jan. 9, 2019, Jan. 21, 2019, Jan. 28, 2019, Feb. 24, 2019, Feb. 26, 2019, Feb. 27, 2019, March 2, 2019, March 25, 2019, March 28, 2019, March 30, 2019, March 31, 2019, April 1, 2019, April 10, 2019, April 11, 2019, April 14, 2019, April 29, 2019, May 4, 2019, May 5, 2019, May 11, 2019, May 12, 2019
Equipment Details:
Imaging Camera: Qhyccd 183M Mono ColdMOS Camera at -20C
Imaging Scope: Sky-Watcher Quattro 8" F4 Imaging Newtonian
Guide Camera: Qhyccd QHY5L-II
Guide Scope: Sky-Watcher Finder Scope
Mount: Sky-Watcher EQ8 Pro
Focuser: Primalucelab ROBO Focuser
FIlterwheel: Starlight Xpress Ltd 7x36mm EFW
Filters: Baader Planetarium RGB
Power and USB Control: Pegasus Astro USB Ultimate Hub Pro
Acquisition Software: Main Sequence Software. Sequence Generator Pro
Processing Software: PixInsight 1.8.6
Rokinon 135
Camera: QSI 583 WSG5
Filter: Astrodon RGBH
Focuser: Robofocus
Focal Length: 135mm
Focal Ratio: f/2.0
Pixel Size: 5.4μm
Image Scale: 8”
Mount: Astro-Physics Mach1 GTO
Location: Deep Sky West, New Mexico
9,5h of RGBH data, integration in PixInsight done:
R: 26 x 300sec
G: 26 x 300sec
B: 28 x 300sec
Ha: 35 x 300sec
I thought I would post another revision of this image. My wife got me the Pixinsight video series by Warren Keller and Rogelio Andreo as an anniversary gift and I have learned quite a bit about how to better manage image data. I completely changed my workflow for this image, and also introduced the Exponential Transformation to bring out some of the darker cosmic dust a bit better. This is a very difficult image to process, as trying to dim the starfield and accentuate the cosmic dust tends to result in over-processed data. Hopefully I have finally found a good balance here, although I may still add additional data when the moon diameter decreases.
Details:
81 x 600s, ISO 800 (13.5 hours)
187 darks, 100 flats, 300 bias
Equipment: Explore Scientific 80mm APO @ 384mm f/4.9, Canon 450D, Televue 0.8x reducer/flattener, Orion Atlas EQ-G
Processed in Pixinsight
IC1805, Westerhout 5, and NGC 869&884, respectively.
This is a wide-field image of one of my favorite parts of the night sky. It's a combination of 1min and 30 sec exposures (519 frames total):
122x1min
397x30sec
Modified Canon T3i w/100mm f/3.5
Tracking: Sky-Watcher Star Adventurer mount
Stacked and processed in Pixinsight
Taken in Yakima Canyon, Washington
Spent the day playing with this in Pixinsight learning how to do various different things. Been a lot of fun!!
This is the planetary nebula called The Eskimo Nebula or NGC 2392. It is a double-shell planetary nebula located in the constellation Gemini. Radial velocity measurements reveal that this diameter of the cloud is growing at a rate of 68 miles per second (Burnham, 1978).
Observation data: J2000 epoch
Right ascension: 07h 29m 10.7669s
Declination: +20° 54′ 42.488″
Distance: 6520±560 ly
Apparent magnitude (V): 10.1
Apparent dimensions (V): 48″ × 48″
Constellation: Gemini
Tech Specs: Orion 8” RC Telescope, ZWO ASI2600MC camera running at -10F, 35 x 60 seconds, Celestron CGEM-DX pier mounted, ZWO EAF and ASIAir Pro, processed in DSS and PixInsight. Image Date: January 3, 2024. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).
Shot in New Orleans under Bortle 8 skies.
Ha 900s x 23
Sii 900s x 36
Oiii 900s x 25
Total Integration = 21h
Takahashi FSQ-106
Takahashi EM-200
ASI 2600MM
Antilia 3nm SHO
Pixinsight:
S/H: BXT / HT
O: BXT / HT / SXT / NXT -> Photoshop (local nebula boost) -> Rescreen Stars
SHO: Blue/Gold Combo
Photoshop: Levels, Shadows/Highlights, Curves, Sat, Local Adjustments, Smart Sharpen (masked)
Processing some lost data from last year! This is IC 59 and IC 63 and are found in the constellation Cassiopeia very near the bright star Gamma Cassiopeia. This set of objects is also known as the Ghost of Cassiopeia. Gamma Cassiopeia also has the informal nickname of Navi. The “IC” designation comes from a group of objects discovered between 1888 and 1907, most made possible by photography, and known as the Index Catalog.
These nebulae are a combination of emission and reflection, they are located about 610 light years from Earth and are about 10 light years across. Gamma Cassiopeia provides the radiation to light up this area of dust and gas, eventually dissipating in the area.
Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO AS2600mc-Pro running at 0C, Sky-Watcher EQ6R-Pro mount, Optolong L-eXtreme filter (2”), 6 Hours 50 Minutes using 300 second exposures, guided using a ZWO 30mm f/4 mini guide scope and ZWO 120 Mini, focus with a ZWO EAF, controlled with a ZWO ASIAir Pro. Processed using PixInsight and DSS. Image Date: September 14, 2023. Location: The Dark Side Observatory, Weatherly, PA, USA (Bortle Class 4).
20s f/3.5 18mm ISO 3200 Canon 700D DSLR single shot tripod mounted. Processing: PixInsight > Photoshop.
M42, Orion Nebula (portion of it). Meade 10in, f/10, Canon 5DMKIII full spectrum. Darks, flats, bias. Processed with PixInsight and Photoshop.
Properties and Evolution
M42 is located at a distance of 1,350 light years, with an uncertainty of about 2%, and is estimated to be 24 light years across.
But the Orion Nebula is just a small illuminated blister on the surface of a much larger cloud of gas and dust that extends over 10 degrees, covering half of the constellation Orion. This much larger nebula is known as the Orion Molecular Complex (OMC 1); we happen to see this structure approximately face-on. The Orion Molecular Cloud extends several hundreds of light-years, and includes Barnard's Loop, the Horsehead Nebula, the Flame Nebula, and the reflection nebula M 78.
M 42 is the closest region of massive star formation to Earth. The youngest and brightest stars we now see in the Orion Nebula are thought to be less than 100,000 years old. Some of these newborn stars are particularly massive, and emit large quantities of ionizing ultraviolet radiation. The ultraviolet light of these hot stars causes the nebula to glow by fluorescence.
The Trapezium multiple star complex is among the most recent products of star formation in the Orion Nebula. This small group of class O and B stars is also responsible for most of the ultraviolet radiation that ionizes the nebula. Two million years ago, this cluster may have been the home of the "runaway stars" AE Aurigae, 53 Arietis, and Mu Columbae, which are currently moving away from the nebula at velocities greater than 100 km/s.
Altogether the Orion Nebula contains about 700 stars in various stages of formation. Many of the faint stars around the Trapezium are so young that they are still radiating energy from gravitational contraction, and have not yet settled down as stable main sequence stars. Other studies of the Nebula have revealed the presence of about 150 protoplanetary disks, supporting the view that these objects are common around infant stars.
I captured this image of Albireo, one of the main, visible stars in the constellation of Cygnus. Actually, make that two as it is a double star. They stand out brightly against the glittering backdrop of the Cygnus Star Cloud.
Albireo A is the larger, amber star and Albireo B is the smaller sapphire blue star. If they are orbiting each other the orbital period is at least 75,000 years.
It turns out that Albireo A is itself a binary star with the components orbiting every 100 years. This whole system is a mere 380 light years away. You could almost touch it - if you had long arms.
The amber star is about 50 times the size of our sun and shines 950 times as bright. The little blue star is only 3 times the mass of our sun and only shines 190 times as bright.
This is a combination of 62 ten-second exposures using my C11. Any longer and the bright stars would have been way over exposed, any less and the background stars would not have shown up.
~~~~~
Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA
Mount: SkyWatcher EQ6-R Pro
Controller: ZWO ASIAIR Plus 256G
Main Camera: ZWO ASI533MC Pro at -10C
Filter: ZWO UV/IR Cut filter
Focuser: ZWO EAF
Guide Camera: ZWO ASI174MM Mini guidecam
Guide via: ZWO OAG
Stacked from:
Lights 62 at 10 seconds, gain 101, temp -10C
Darks 30 at 10 seconds, gain 101, temp -10C
Flat 30 at 570 ms, gain 101, temp -10C
Dark Flat 30 at 570 ms gain 101 temp -10C
Bortle 4 sky.
Integrated the saved frames in Astro Pixel Processor.
Processed in PixInsight
Added captions in Photoshop CS4
Rarely photographed, Sh2-92 is an emission nebula located in the constellation of Vulpecula. This cloud of gas has a diameter in excess of 200 light years. The source of the ionization of the gases of this cloud is a brilliant Wolf-rayet star, known with the abbreviation WR 127. (Explore Scientific ED80, ZWO ASI2600MM, Antlia 3nm SHO, ZWO ASIAIR, ZWO AM5, PixInsight, Photoshop)
---Photo details----
Stacks HSO: 3x75x2min
Darks : 100
Exposure Time : 7.5h
Stack program : PixInsight
---Photo scope---
Camera : ZWO ASI6200MM PRO
CCD Temperature : -10C
Filter(s) used: Optolong Ha 3nm, Optolong S2 3nm, Optolong O3 3nm
Tube : Takahashi FSQ-106 EDX4
Field flattener / Reducer : -
Effective focal length : 530 mm
Effective aperture : F/5
---Guide scope---
Camera : ASI Mini guider
Guide exposure : 3 sec
---Mount and other stuff---
Mount : Skywatcher AZ-EQ-6 GT
---Processing details----
NINA for acquisition, controlling the following:
- ASTAP (plate solving)
- PHD2 (guiding)
- Stellarium
PixInsight : stacking, alignment, background extraction, histogram manipulation
Lightroom for final touchups
Topaz Denoise for a last processing step
Scope: Orion Optics VX6 with 1/10 PV upgraded optics
Guide Scope: Skywatcher ST80
Guide Cam: QHY 5 Mono
Mount: Skywatcher HQE5
Camera: Nikon D5100 Modded
Additional: Astronomik CLS CCD Filter, Baader Mark-III MPCC Coma Corrector
Exposure: 29x5 Minute Subs ISO:1600, Darks, Bias & Flats
Technical: 750mm f/5
Software: DSS, Pixinsight, BackyardNikon, PHD2
canon 6d + canon 400mm f5,6
20x1min
iso 1600
stacking using deep sky stacker,
processing in pixinsight and photoshop
M8 & M20 - Canon 450D Baader + filtro Hutech IDAS LPS P2 - Canon EF 100mm f/2.8 L Macro IS USM @ f/4, ISO 800. Integrazione: 14 x 240" 10 Dark, 10 Flat, 10 Bias. - Astroinseguitore iOptron Sky Tracker - Elaborazione con Pixinsight v. 1.8 + Photoshop CS6 + plugin Topaz Denoise 7. Data di ripresa: Luglio 2015. Luogo di ripresa: San Bernardo d'Armo, SS n°28 del Col di Nava - Coordinate 44°09'58.99"N-07°88'40.78"E
sony A7S sur tsq71/347
cem120
reprise traitement mais avec pixinsight .
480 poses de 30 sec 3200 iso
Soit 4h
As per usual the minute I upload an image I dislike most things about it. The previous version was too aggressively processed with some scruffy stars and poor control of the blue areas. So here is version 2, which I will also dislike within the next 30 minutes!
All the same data as before shots with Astrodon Ha & OIII filters using an Altair Astro 6" RC and Atik 314l+. Re-processed in Pixinsight and CS5.
NGC 7635, also called the Bubble Nebula, 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.
Taken in my back garden between 23:00 - 01:28 9th August'17.
20 x 3min H-Alpha Images
10 x 3min R
10 x 3min G
10 x 3min B
Total of 2.5 Hours Imaging
Equipment:-
Skywatcher 200P 8" Reflector Scope
ATIK 314L+ CCD Mono Camera
Baader Ha, R, G, B Filters
Guiding via Orion Star Shoot 70mm & CCD & PHD2
Imaging: MaximDL
Processing: Pixinsight 1.8.5
Shot August 3, 2019, from the turnout just inside the east entrance to Pinnacles National Park. Nikon D5600 with a Rokinon 16mm f/2.0 lens. No tracking. The image of the sky is from fifty 10-second exposures at f/3.5, ISO 6400. 500 seconds total integration time. The foreground is from just one of the 10-second exposures. Processed in PixInsight and Photoshop.
Veil Rokinon 135
Camera: QSI 583 WSG5
Filter: Astrodon RGBH
Focuser: Robofocus
Focal Length: 135mm
Focal Ratio: f/2.0
Pixel Size: 5.4μm
Image Scale: 8”
Mount: Astro-Physics Mach1 GTO
Location: Deep Sky West, New Mexico
15h of RGBH data, integration in PixInsight done:
R: 29 x 300sec
G: 54 x 300sec
B: 36 x 300sec
Ha: 62 x 300sec
ARP 273, files downloaded from Hubble Legacy Harchive and processed by me with Pixinsight and Photoshop, filters used: f390w, f475x and f600lp. Credit: Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA). Arp 273 (APG 273) is a pair of interacting galaxies located in the direction of the constellation Andromeda at a distance of 345 million light-years from Earth.
It is catalogued in the Atlas of Peculiar Galaxies compiled by Halton Arp in 1966. The pair is formed by the interaction of the spiral galaxy UGC 1810 which appears face-on and the five times smaller spiral galaxy UGC 1813 which appears almost in profile (edge-on). The latter shows the hallmarks of active star formation in the galactic core and is hypothesized to have already crossed the larger galaxy in the past. At the end of one of UGC 1810's spiral arms, a third small galaxy can be seen.
On January 28, 1962, a type II supernova was detected in the galaxy UGC 1810 cataloged as SN 1962R.
Arp 273 is part of the galaxy cluster Abell 347, itself a component of the Perseus-Pisces Supercluster (SCl 40).
40 minutes ( 20 X 120 sec ) stack of Dumbbell nebula shot using Canon T4i ( modified ) , Celestron 8SE scope and CGEM || mount from my light polluted patio.
Veil Nebula
Nikon D5300
AT65EDQ
CG5 with OnStep
18@300 seconds ISO 400
100 bias
20 flats
APT, CdC, PHD2, Sharpcap (for polar alignment), PixInsight, Photoshop, Astronomy Tools Action Set.
70 degrees F!! High humidity but surprisingly dark.
Would have had more integration time but moon was rising and almost 2AM (had to work in the AM)
This is a tough target for an unmodded camera as the star field is overwhelming.
The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop (radio source W78, or Sharpless 103), a large but relatively faint supernova remnant. The source supernova exploded circa 3,000 BC to 6,000 BC, and the remnants have since expanded to cover an area roughly 3 degrees in diameter (about 6 times the diameter, or 36 times the area, of the full Moon). The distance to the nebula is not precisely known, but Far Ultraviolet Spectroscopic Explorer (FUSE) data supports a distance of about 1,470 light-years.[2]
The Hubble Space Telescope captured several images of the nebula. The analysis of the emissions from the nebula indicate the presence of oxygen, sulfur, and hydrogen. This is also one of the largest, brightest features in the x-ray sky.
(Updated Post: Learned how to use PixInsight and got a much better result!)
First attempt at an apparently very difficult object. I think you're supposed to utilize different types of filters to pull out the color detail, but it looks like I obtained some decent nebula structure.
NGC 2359 is an emission nebula in the constellation Canis Major. The nebula is approximately 3,670 parsecs away and 30 light-years in size. The central star is the Wolf-Rayet star WR7, an extremely hot star thought to be in a brief pre-supernova stage of evolution.
Image Details:
Imaging Scope: Astrotelescopes ED 80mm Refractor
Imaging Camera: ZWO ASI183MC Color with IR/UV Cut Filter
Guiding Scope: William Optics 66mm Petzval
Guiding Camera: Orion Starshoot Auto Guider
Acquisition Software: Sharpcap
Guiding Software: PHD2
Light Frames: 25*5 mins @ Gain=100
Stacked in Deep Sky Stacker
Processed in PixInsight and Adobe Lightroom
This image is a composite of four emission nebulae, clouds of star-forming gas and dust that are illuminated by the newborn stars they host. Each of them are included in the Sharpless Catalog of emission nebulae compiled by Stewart Sharpless in the 1950's. The individual images were captured over a period of four clear nights in Seattle, Washington, using an Ha narrowband filter to suppress light pollution by only admitting light at wavelengths emitted by the nebulae.
From top-left to bottom-right, the nebulae and integration times are as follows:
SH2-86 in Vulpecula (200 mins)
SH2-129 in Cepheus (235 mins)
SH2-126 in Lacerta (250 mins)
SH2-155 in Cepheus (195 mins)
Telescope: Tele Vue 76mm
Camera: QSI 683wsg
Filter: Astrodon Ha 5nm
Mount: iOptron iEQ45 Pro
Processing Software: PixInsight 1.8. Composited using Adobe Photoshop.
ATIK 490EX
TS 80/560 F7 Reducer/Flattener 0,8x
03-Mar. to 05-Mar.-2025
Ha 41 x 5min
OIII 40 x 5min
SII 22 x 5min
Exposure time 12h10' used 8h35'
Stack Program: Astro Pixel Processor (Ha,OIII 80% / SII 48% problems with filter)
Pictures combined with PixInsight (SHO)
Image Processing: PixInsight
LRGB of M 82, Bode's nebulae, NGC 3034
"StarPi" INDI/Ekos/Kstars and Smartphone
RC 8 @1150mm
QHYCCD 183M LRGB
152x600 Luminanza
36x300 RGB
elaboration pure Pixinsight
Shots in cooperation whit Alessandro Pensato
The Bright Nebula (Mag 10) of IC 4628 dominates the lower left of this picture.To the middle upper right lies the bright Open Star cluster of NGC 6231 (Mag 2.59), although it contains stars of magnitude 10 to 13.
The two bright stars to the right from there are (from the top) Zeta Scorpii Mag 4.8 and the lower one Zeta2 Scorpii Mag 3.6.
This shot is a combination of 48Light Frames and 25 Dark Frames at 180seconds each, stacked/Combined Pre-Processed in Pixinsight and post-processed in CS6.
5 hours of luminance data from earlier in August.
Altair Astro 6" RC and Atik 460ex. Processed in Pixinsight and CS5. Data capture in Sequence Generator Pro.
NGC 4449, also known as Caldwell 21, is an irregular Magellanic type galaxy in the constellation Canes Venatici, being located about 13 million light-years away. It is part of the M94 Group or Canes Venatici I Group that is relatively close to the Local Group hosting our Milky Way galaxy. This galaxy is similar in nature to the Milky Way's satellite galaxy, the Large Magellanic Cloud (LMC), though it is not as bright nor as large. NGC 4449 has a general bar shape, also characteristic of the LMC, with scattered young blue star clusters.
Observation data (J2000 epoch)
Constellation: Canes Venatici
Right ascension: 12h 28m 11.9s
Declination: +44° 05′ 40″
Distance: 13.08 ± 0.98 Mly
Apparent magnitude (V): 10.0
Tech Specs: Orion 8” RC Telescope, ZWO ASI2600MC camera running at -10F, 162 x 60 seconds (2 hours and 42 minutes), Celestron CGEM-DX pier mounted, ZWO EAF and ASIAir Pro, processed in DSS and PixInsight. Image Date: February 4, 2024. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).
An open cluster of young stars forming in a zone of hydrogen - either as cold dense dark clouds or less dense bright areas of gas emitting strongly in the hydrogen alpha wavelength.
Eventually, the light pressure of ultraviolet radiation from the young stars will push the clouds of gas away leaving just an open cluster like the Pleiades.
Infrared analysis of the iconic Eagle dark nebula shows more young stars forming within.
16 x 10 minute Hydrogen alpha sub-exposures on itelescope T21, a 1939mm focal length, f/4.5 corrected Dall-Kirkham scope.
Astrometry
Center (RA, hms): 18h 19m 12.203s
Center (Dec, dms): -13° 48' 03.394"
Size: 31.2 x 26.3 arcmin
Radius: 0.340 deg
Pixel scale: 0.956 arcsec/pixel
Orientation:Up is 0.886 degrees E of N
It is a 30 X 130 sec stack of Ring Nebula ( Messier 57 ) taken through 8inch telescope, Celestron CGEM II EQ mount and Canon T4i ( modified ) camera.
Ritchey-Chrétien Astrograph 10 ''
Gemini G53F mount
Atik 414 Ex
Exp. 40 x 180 '' Ha
Exp. 60 x 180 '' O3
Pixinsight-Photoshop