Image Description and Details :

NGC 6752 is a globular cluster in the constellation Pavo. It is the fourth-brightest globular cluster in the sky (after Omega Centauri, 47 Tucanae and Messier 22). The cluster lies around 13,000 light-years distant and is one of the closer globular clusters to Earth and has been calculated to be 11.78 billion years old.Telescope 20" Cassegrain f/3 (1500 mm) Camera Moravian G2 8300 monoExposure RGB 4x2min each (total 24min) Software PixInsight Location IAS Hakos Farm, Namibia

Copyright: Herbert Walter

Image Description and Details :

Celestron C5+Canon 60DExposure time: 2 secondsIso: 800F: 10Focal Lenght: 1250 mm.Process: Lightroom + PixinsightGuillermo Cervantes MosquedaObservatorio Astronómico AltaïrPoncitlán Jalisco México

Copyright: Guillermo Cervantes Mosqueda

Image Description:

On a rocky summit of an icy planet sits a remote research outpost. This frozen world orbits a inconspicuous star in a minor arm of a giant barred spiral galaxy.

Named after a mythical creature of an ancient culture that once dominated the planet, this scientific outpost is called the Sphinx. The Spinx is mythicized to have mercilessly killed those who couldn't answer her riddle.

The Sphinx station has a prime view on one of the galaxies major star forming regions, named after another mythological figure, a giant hunter. Not all scientific riddles within the hunter are solved yet, but fortunately the Sphinx hasn't killed any scientists so far.

The thin atmosphere of the planet at this high altitude location contains enough water to form clouds, which shroud the observatory in freezing fog about 40% of the time. If the clouds part, the hunter's giant molecular clouds of ionized hydrogen are lighting up the sky.

I had the opportunity to visit the Sphinx outpost with benjaminbarakat in September for a night of astrophotography. After a sternous night, we were happy that both the planet and the mythical creatures had shown mercy. The hunter had made its appearance and we escaped this stunning place without getting killed by lack of oxygen, the cold or the wrath of the Sphinx.

EXIF
Canon EOS EOS Ra
Canon 24-70mm f/2.8 L ll @ 50mm
iOptron SkyTracker Pro
Sky:
4 panel panorama, each a stack of 7 x 60s @ ISO1600
Foreground:
Panorama of 4x 2s @ ISO400 during blue hour

Copyright: Ralf Rohner

Image Description and Details :

Located in the constellation Cassiopeia, this magnificent star forming region, surrounded by energized gas and dark dust lanes, is itself located alongside the larger Heart Nebula and is well known for its strong source of radio emissions.⁣
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We are star dust.⁣
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——————⁣
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This image was created with data captured across 7 nights from October to November using a 8” Ritchey–Chrétien reflector telescope and a cooled, monochrome camera with both narrowband and broadband filters.⁣
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The Hydrogen Alpha, Oxygen III and Sulphur II emission wavelengths are exceptionally strong in this region and I mapped the colour palette to try and make something truly unique! I belended in RGB stars for good measure. I hope you like it! ⁣
⁣
⁣30hr 25.5min⁣s total exposure time⁣
⁣
120x 300” Sii⁣
105x 300” Ha⁣
117x 300” Oiii⁣
84x 60” R⁣
65x 60” G⁣
82x 60” B⁣
40x Darks⁣
390 Flats/Dark Flats⁣
10/30-31, 11/01-02, 11/05-07/2021⁣
Bortle 6⁣/7⁣
Calgary, AB⁣
⁣
|| Setup ||
1624mm Focal Length⁣
TS Optics RC 8” Carbon Fiber⁣ @ f8 ⁣
SHO 3nm, 2”⁣
RGB, 2”⁣
EQ6-R Pro⁣
ASI2600MM-Pro, unity, -15C⁣
EAF⁣
EFW 7x2, 2”⁣
OAG⁣68M⁣
ASI290MM-mini⁣
ASIAir Pro⁣
⁣APP, PI⁣, PS, MLR⁣
2x binning


Copyright: Andrew Lesser

Image Description and Details :

Barnard 150, also known as the Hippocampus Nebula, is a dark molecular cloud of dust in the constellation Cepheus located about 1,200 light years away.

This molecular cloud is part of our galaxy and it is one of 182 objects cataloged by astronomer Edward E. Barnard.On the right side of the image, we can see part of the squid nebula (OU4) (red signal).

Copyright: Thomas LELU

Image Description and Details :

SH2-135, a faint emission nebula very often missed by the amateur astrophotographers.There aren't too many photos of this target and most of them are in HaRGB. The Oiii is nearly invisible and I had to stretch the stack as much as I possibly could to highlight the Oiii areas.Equipment used:AZEq6-GTAstroTech 106LE with upgraded Moonlite focuserTSFlat 2" field flattenerASI294MM Pro Cmos camera, cooled at - 15°C8x1.25" ZWO USB filterwheelChroma 3nm 1.25" Ha, Oiii and Sii filtersQhyccd QHY5L-IIM guide cameraOPTICSTAR AR90 F5.5 guidescopeQhyccd PolemasterSoftware used:Eqmod, SGP - Sequence Generator Pro, PHD2, Stellarium with stellariumScope, SharpCap for polar alignmentDate: 15.09 to 25.10.2021Location: Bushey Herts, UK, bortle 7Ha: 80x300sec Bin 2x2, Gain 200 Offset 10Oiii: 52x300sec Bin 2x2, Gain 200 Offset 10Sii: 60x300sec Bin 2x2, Gain 200 Offset 10Total integration time 16 hours Stacked in AstroPixel Processor and processed in Pixinsignt and Photoshop CC 2021

Copyright: Emil Andronic

Image Description and Details : Telescope: FSQ-106ED
Camera: QSI 583ws
Guide: EZG-60 - ZWO ASI 120 MC
Filters: BAADER LRGB, ASTRONOMIK H-ALPHA
Exposure: 42 x 10 MIN LUM, 11 X 5 MIN RED B2, 11 X 5 MIN GREEN B2, 11 X 5 MIN BLUE B2,10 X 10 MIN H-ALPHA
Software: MAXIM DL, PHOTOSHOP CC, PIXINSIGHT
Location: ESCOBAR DE CAMPOS, LEON (SPAIN)

Copyright: César Blanco

About two weeks ago, I processed a monochrome Hα image of this interesting object on the border of Cepheus and Lacerta. Last Monday the sky unexpectedly cleared. I decided to spend the night on acquiring OIII data to create an Hα-OIII-OIII false colour image, where Hα is assigned to the red channel, OIII to the blue channel and a mix of Hα and OIII to the green channel. Although it stayed clear all night, I only used the images captured before midnight. In the area in the Netherlands where I live, the sky severely brightens from midnight to dawn because horticulturalists are then allowed to ignite assimilation lights. Although the used OIII filter has a bandwidth of only 4nm, the light pollution caused by the glasshouse horticulture severely affects the quality (signal-to-noise ratio) of the images. I'll post a separate message to illustrate the difference in sky quality before and after midnight.

What's striking in (false) colour images of this object, is the conical beam that crosses in front of nebulas in the background. Here this beam has a cyan hue in front of yellow/orange nebulas.

Exposure time: 16 hours, 10 minutes (141x 300" Hα, 53x 300" OIII) | Optics: Takahashi ε-180ED f/2.8 | Camera: ZWO ASI294MM Pro (B 2x2, G 120, T -15 °C) | Acquisition: ZWO ASIair Pro | Filters: Baader Planetarium Ultra-Highspeed | Mount: Astro-Physics Mach1 GTO | Location: Zoetermeer, Netherlands | Date: 27 & 28 October and 8 November 2021

Pre-processing in Astro Pixel Processor, post-processing in Adobe Photoshop.

Copyright: Maurice Toet

Image Description and Details :

The Pacman Nebula (NGC 281) is a cosmic cloud of space gas rich in Hydrogen Alpha (red/orange) and Oxygen (blue) located in the constellation Cassiopeia. It gets its name from the classic video game character it resembles. NGC 281 is a rather diffuse red-glowing emission nebula. It includes a small, yet noticeable open star cluster (IC 1590) and some really dynamic dust lanes. The prominent lane of dark dust cutting into this glowing nebula creates the “mouth” of this nebulas shape.The Pacman Nebula contains Bok globules, which are small and isolated dark nebulae containing dense amounts of dust and gas. These collections of cosmic gas and dust are often followed by the formation of new stars.Captured with 14.5 hours of narrowband data under a near full moon and Bortle Class 4 skies near downtown Flagstaff, Arizona.OTA: William Optics GT81 using 0.8x Flat6A-81 reducerMount: Celestron CGX-LCamera: ZWO ASI294MM ProGain: 100Filters:Night 1Chroma 3nm Oiii 900s x 32 = 8hrsNight 2Chroma 5nm Ha 900s x 26 = 6.5hrsCooling Temperature: -10 CelsiusAuto-guiding: ZWO ASI174MM Mini and ZWO M48 OAGControl: ZWO ASIAIR ProCalibrated in Astro Pixel Processor⁣ with darks and flatsProcessed in Pixinsight and Lightroom

Copyright: Drew Evans

2 panel mosaic crop

C 8 Hyperstar

C 14 Hyperstar

Starlight Xpress M25 C

Starlight Xpress 694 C

QHY 247 C

Baader L Booster Filter

Copyright: JP Pecorino

Image Description and Details : LBN 576 (also known as Abell 85 and CTB 1) is a faint supernova remnant lying almost 10,000 light years away.

Very diffuse nebula and challenge target, which required many hours of exposure, around 26 hours to obtain this result. Hope you like it.


Setup:
Mount: Sky-Watcher EQ6-r
Telescope: TS APO 80/500
Capture camera: QHY294MM
Guide camera: ASI 120MM
Filters: Baader CMOS Ha 3.5nm; Baader CMOS OIII 4nm
Frames:
Ha: 115x400s | Gain 1750 | -10ºC
OIII: 120x400s | Gain 1750 | -10ºC
Total Exposure: ~26h

Acquisition: Sharpcap; APT
Edition: PixInsight Core; PS
Location: Sabugo - Portugal | Bortle 6/7
Oct/Nov 2021

Copyright: Henrique Silva 

Image Description and Details :
Lower's nebula (Sh2-261) is found on the outermost edge of our Milkyway between the Orion and Perseus arm. Sh2-261 is a large faint region of predominantly ionized hydrogen. The nebula is named after Harold and Charles Lower who discovered this nebula in 1939.
Embedded within Sh2-261 is LBN 862 and LBN 864. Also there are several dark nebulae in this field.

Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: QSI 6120i
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: Tak QE 0.73x
Software: PHD 2, Pleiades Astrophoto PixInsight , Astro Pixel Processor (for stacking), Sequence Generator Pro SGP (for capture)
Filters: Astrodon Ha, SII, OIII,
Accessories: Robofocus Focuser, ATIK EFW3

Original Resolution: 3600x 2400
Dates: 3rd Nov - 8th Nov '21

Frames:
Astrodon Ha 18 x 20'
Astrodon SII 24 x 20'
Astrodon OIII 30 x 20'
​Total Time: 24 Hours

Center (RA, Dec): (92.351, 15.689)
Center (RA, hms): 06h 09m 24.153s
Center (Dec, dms): +15° 41' 18.668"
Size: 80.7 x 53.8 arcmin
Radius: 0.808 deg
Pixel scale: 1.34 arcsec/pixel
Orientation: Up is 180 degrees E of N

Copyright: Brendan Kinch

Image Description and Details :

EQUIPMENT DATA:
Telescope: Borg 101ED f/4
Mount: Skywatcher HEQ5 (Rowan Belt Mod)
Camera: QHYCCD 163M
Filters: Optolong H OIII
Guide Scope: DIY Guidescope 43mm f/3
Guide Camera: QHY 178M

ADQUISITION DATA:
Location: Castillo de Villamalefa
Date: Summer 2021
Resolution: 1.87″/pixel
Guiding Performance: 1” RMS (average)
Exposures: (Gain 174 / Offset 77 / Bin 1×1)
H: 11.25h (137x300s)
O: 26.35h (319x300s)
Sensor Temperature: -10C
20 Flats
20 Darks

Total Integration Time: 38.5h

Copyright: Alberto Ibañez

Image Description and Details : This colourful region, located in the constellation Cygnus, has many distinct views of energized gas, all of which give a deep sense of wonder and amazement. The night sky is wonderful, always look up!⁣
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We are star dust.⁣
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This was captured over 8 nights across June and July, only 3 hours at a time due to our limited darkness on the 51st parallel North.⁣
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⁣27hr 47min⁣ total exposure time⁣
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94x300” Sii⁣
84x300” Ha⁣
119x300” Oiii⁣
31x120” R⁣
32x120” G⁣
28xx120” B⁣
40x Darks⁣
180 Flats/Dark Flats⁣
06/06, 06/25-30, 07/09/2021⁣
Bortle 6⁣/7⁣
Calgary, AB⁣
⁣
Setup#1⁣ - SHO⁣
711mm Focal Length⁣
@williamoptics GT102⁣
@williamoptics Flat68iii⁣
@antliafilters SHO 3nm, 2”⁣
@antliafilters RGB, 2”⁣
@skywatcherusa EQ6-R Pro⁣
@zwoasi ASI2600MM-Pro, unity, -10C⁣
@zwoasi EAF⁣
@zwoasi EFW 7x2, 2”⁣
@zwoasi OAG⁣68M⁣
@zwoasi ASI290MM-mini⁣
⁣
@zwoasi ASIAir Pro⁣
⁣APP, PI⁣, PS, MLR⁣

Copyright: Andrew Lesser

Image Description:

Takahashi FSQ106EDXIII

QSI683

Paramount ME

Astrodon Tru-Balance E-Series Gen 2 L: 23 · 900s

Astrodon Tru-Balance E-Series Gen 2 RGB: (26, 26, 24) · 900s

Copyright: R. Colombari

Image Description and Details :

This is the 9th object in the van der Bergh surrounded by LDN 1357 and 1355 in the constellation Cassiopeia.
Captured over 2 nights with a Celestion EdgeHD 9.25" at 2350mm focal length for a total of 18.625 hours using LRGB filters.

Copyright: Matthew Proulx

Image Description and Details : With only 2 months left to complete 10 years of the ghost crater discovered by me, I present a new photo in better resulution of the formation in question and take the opportunity to transcribe the original text with some minor adaptations."I've always had the greatest interest in astrophotography of Lunar formations and from the beginning, using mainly the Virtual Moon Atlas, I tried to find and know the most striking features of the regions I observed or photographed.As time went by, I acquired a better knowledge and more easily recognized these regions and their main accidents, which greatly facilitated the perception of anything that clashed with the traditionally observed landscape.So on January 5, 2012, photographing the region near Plateau Aristarchus, I noticed a strange depression that caught my attention. I tried to locate it on lunar maps and even in the Virtual Moon Atlas, but I found nothing.I searched the internet, asked for help from colleagues in Brazil and abroad to clarify what this training could be, I believed that it should already be known or that others had already observed it.In principle, I couldn't find any reference to this lunar formation.Looking at the attached photo, the impression we have is the existence of a depression that is only revealed when the Sun is at a very low angle of illumination.I sent the original photos to my friend Vaz Tolentino from the Lunar Observatory (VTOL) back in 2012 and he gave me the following explanation: Indeed, your photo, due to the angle of sunlight, captured an interesting and unusual circular depression, which has along its southwestern rim, the crater WOLLASTON D (5km in diameter). The formation is very strange in that it doesn't look in the style of known ghost craters. The strange and unusual thing is that, it appears that the supposed crater was flooded by basaltic lava and, instead of filling up and leveling off with the surrounding outer floor, it only filled a little and didn't even out, remaining like a "gourd" or "bowl ", in addition to leaving no traces of a central peak. This depression appears to be about 42 km in diameter, being slightly larger than ARISTARCHUS. I checked LRO images and unfortunately I can't identify anything due to the sunlight being high in the photos. We need more photos of this region, in light conditions similar to the one in this photo.At Alexandre Amorim's suggestion, I decided to contact BAA (http://www.baalunarsection.org.uk/) Lunar Section where I made contact with Dr. Anthony Cook. I sent to the same the photos obtained by me in January and June 2012, as well as I reported the suspicion that the referred depression had not yet been catalogued. After exchanging several emails, I received the following message from Dr. Cook, which I transfer in full:On Mon 4/06/12 07:06 , "Tony Cook [atc]" atc@aber.ac.uk sat:Dear Avani,Thank you for your images. It looks like a buried ghost crater that you have found. Please keep on looking for another ghost craters elsewhere on the Moon because I think that there may be quite a few that are visible near to sun rise or sunset that remain to be discovered. I think this work will be of great interest to Peter the Greek.

Dr Anthony Cook Institute of Mathematics and Physics, Aberystwyth University, Penglais, Aberystwyth, Ceredigion. SY23 3BZ. United KingdomIn April 2013 using the new QHY 5L camera, a color CMOs dedicated to high resolution Lunar and planetary photography, I got a more detailed photo of the place where the depression was located:This allowed colleague Vaz Tolentino to trace the altimetric profile of depression and perform the following analysis:"Dear Avani and Amorim:Analyzing the Avani photos (January/2012 - April/2013), together with the altimetric profile that presents a classic phantom crater depression, I reach the conclusion that, most likely, it is the discovery of a new phantom crater without cataloging.Also analyzing the altimetry of the ghost craters DAGUERRE, LAMONT and that discovered by VTOL in February 2011, I came to the conclusion that they have very similar altimetric profiles, and the Avani ghost crater is a little shallower (46 km of diameter per 130 m depth) than DAGUERRE and LAMONT (both approximately 400 m deep).However, Avani's ghost crater depth (130m) is more compatible with the ghost crater discovered by VTOL (which is approximately 100m deep). What this means?It means that, in the past (at the time of the ancient selenographers), when the main interest in observing the Moon was to map its relief, identifying and naming its formations, they did not have the current technology, that is, shallow formations like these two Phantom craters (Avani and VTOL) are very difficult to see through an eyepiece, to be sure of what you are actually looking at.After the initial period of cataloging and naming relief formations, lunar map drawings and other studies, the space age arrived. The first robotic lunar probes (Soviet and American) and the manned landings of the APOLLO missions had other scientific goals than discovering new, uncatalogued formations. Furthermore, even in the very high resolution photos taken by modern robotic lunar probes (SELENE, LRO, GRAIL, etc.), the images were mostly captured with sunlight coming from above and not obliquely, which makes it difficult relief enhancement and does not facilitate the identification of shallower formations such as these phantom craters.For modern selenographs, only after the technological evolution of digital cameras (CCD and CMOS), together with the evolution of telescope optics (large and good mirrors and also APO lenses), combined with the favorable angle of incidence of light on the lunar surface, it became easier to identify new smaller formations, "camouflaged" and not cataloged on the Moon.Congratulations Avani Soares on your discovery!Another point marked by the new generation of Brazilian selenographers. A hug from the VTOL team!In this way, I believe that any misunderstanding regarding the existence and identification of the aforementioned training is ruled out, only lacking the official disclosure and recognition to crown the aforementioned work."

Copyright: Astroavani

NGC 986 is a barred spiral galaxy in the constellation of Fornax, located about 56 million light-years away. It is a small target and is not imaged often. The galaxy contains two large, extended and slightly warped arms that begin at each end of the central bar.

Young blue stars are spread through the arms and the core of the galaxy glows with star formation surrounded by numerous dust lanes.

Imaged in LRGB at El Sauce, Obstech, Chile on our CDK 1000

Image Processing: Mike Selby

Imaging telescopes or lenses: Telescop Service TS-PHOTON 10" F4 Advanced Newtonian Telescope with Carbon Tube

Imaging cameras: ZWO ASI294MM Pro

Mounts: iOptron CEM70 CEM70-NUC

Guiding telescopes or lenses: Williams Optics RedCat 51

Guiding cameras: ZWO ASI290MM Mini

Focal reducers: Telescope Service TS-Optics NEWTON Coma Corrector 1.0x TSGPU Superflat - 4-element

Software: PixInsight · Lightroom · Photoshop

Filters: Astronomik S2 1.25" 6nm · Astronomik 1.25" Ha 6nm · Astronomik 1.25" OIII 6nm

Accessory: MoonLite CRL 2.5" Focuser/Stepper Motor/V2 mini Controller · ZWO EFW 1.25" 8 positions

Frames:
Astronomik 1.25" Ha 6nm: 61x180" (3h 3') -20C bin 2x2
Astronomik 1.25" OIII 6nm: 67x180" (3h 21')-20C bin 2x2
Astronomik S2 1.25" 6nm: 70x180" (3h 30') -20C bin 2x2

Integration: 9h 54'

Copyright: Andrei Gusan

Image Description and Details : The Grus Triplet is group of galaxies about 60 million light years away in the constellation Grus and is comprised of NGC 7582, NGC 7590, and NGC 7599. These three galaxies along with NGC 7552 make up the Grus Quartet, which is part of the IC 1459 Group.

Location/Date – El Sauce, Chile, August 2021

Imaging System – Planewave 17” CDK, 10 Micron GM3000, FLI ML16803 Chroma Filters

Exposure – LRGB, 11 hours

Copyright: Good Astronomy