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IC 5070, the Pelican Nebula in the constellation Cygnus in the light of hydrogen. 72 frames, 300 sec. each (6 hr. total). Explore Scientific ED102 0.1m f/7 refractor, Stellarvue 0.8x reducer/flattener, ZWO ASI294MC Pro cooled camera, 7nm H-alpha filter, iOptron CEM25P mount, auto-guided, ASIAir controller. Processed in Astro Pixel Processor, Lightroom, and Photoshop.
#astrophotography, #deepsky
Fujifilm X-T10, Samyang 135mm f/2.0 @ f2.0, ISO 1600, 60 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken October 26 under Bortle 3/4 skies.
The faint haze on the right edge is integrated flux nebulae (IFN).
Nov. 2020 update: Tweaked color.
Crescent Venus in daylight.
30 1/1000sec. exposures, Explore Scientific 102mm f/7 refractor, ASI294MC camera, UV/IR cutoff filter, iOptron CEM25P, ASIAir controller, processed in Astro Pixel Processor, Lightroom, and Photoshop.
More information on how this photo was made:
Date: Nov. 1, 29 / Nov.29, 2019 /Dec. 27, 2019
Location: Amagi Highland, Shizuoka Pref., Japan / Asagiri Arena, Shizuoka Pref., Japan
Optics: SIGMA 135mm F1.8 DG HSM | Art (f/2.2)
Mount: SWAT-310 V-spec(single axis autoguiding)
Autoguider: QHY5L-II, LM75JC, PHD2
Camera: Canon EOS 6D (SEO-SP4)
ISO speed: 1600
Exposure: 30x180sec.x9panels
Processing: PixInsight, Astro Pixel Processor
Dati: 26 x 4 min. 800 Iso + 15 Dark + 25 flat e darkflat software: AstroPixelProcessor e Photoshop CS2 Strumenti: ottica Takahashi FSQ106 f/5 su Skywatcher EQ6 pro - Canon 40D CentralDS. 10/08/2020 - Castelletta (AN), Temp. esterna: 18° C temperatura al sensore 0,00°C - Umidità 75%
Date: 21:10-28:15JST Oct.4, 2019
Location: Asagiri Highland, Shizuoka Pref., Japan
Cloud Coverage: 0 ~ 30%
Wind: 5 ~ 26 kt
Temperature: 13.9C ~ 17.8C
Humidity: 71 ~ 93%
Air pressure: 914hPa
Lens: SIGMA 135mm F1.8 DG HSM | Art (f/2.2)
Mount: SWAT-310 (single axis autoguiding)
Autoguider: QHY5L-II, LM75JC, PHD2
Camera: Canon EOS 6D (SEO-SP4)
ISO speed: 1600
Exposure: 15x180sec.x5panels
Processing: PixInsight, Astro Pixel Processor
This wonderful dark nebula in Cepheus (Barnard 150 / LDN 1082) is commonly referred to as the "Seahorse Nebula", but in the orientation of my image, the structure reminds me much more of a mermaid, drifting through the cosmos with her long hair.
Its counterpart is played by an H-Alpha cloud, which already belongs to the adjacent "Flying Bat Nebula" (Sh2-129). To bring out this faint area, I captured 7 hours of Ha and then combined it with 10 hours and 24 minutes of RGB. I hope you like it!
Celestron RASA 8 f/2
Celestron Motorfocus
EQ6-R Pro
ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)
RGB: 326 × 60″ (5h 26′)
TS 2600 MP (Gain 100, Offset 200, -10°)
RGB: 51 × 60″ (5h 51′), 131 × 120″ (4h 22′), 70 × 10″ (11' 40'′)
Baader H-Alpha Highspeed 3.5nm: 210 × 120″ (7h)
Total: 17H 24′ 40″
Bortle 5 (19.50 SQM)
N.I.N.A., Guiding with ZWO ASI 120MM and PHD2
Astropixelprocessor, Photoshop, Pixinsight
First ever HARGB image taken with the ASI183MM and Antlia RGB HA 3.5nm filters.
The RGB sequences were taken in Nebulosity at 15 degrees as I could not get the software to cool the camera. NINA was used to capture the HA and it worked a treat. This is fabulous software and its free.
ASI183MM gain = 111
20 * 60 sec RED
20 * 60 sec GREEN
20 * 60 sec BLUE
12 * 600 sec HA.
Calibrated in Astro Pixel Processor.
Mount was the m-zero with just a rough PA so some walking noise in the shadows but hey, I am thrilled :)
The Rosette Nebula (NGC 2244).
> The Rosette Nebula (also known as Caldwell 49) is an H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter. — Wikipedia
Stack of 20 exposures 3 minutes long at ISO 1600. Stacked in AstroPixelProcessor, and edited in Photoshop. I think this is a little grainy due to the higher ISO and using LENR instead of darks.
I used a SkyWatcher Esprit 100 telescope on a HEQ 5 Pro tracking mount, and the Nikon z 50.
Starforming Nebula IC 410 in the constellation Auriga in the light of sulfur (red), hydrogen (green), and oxygen (blue). 19 hours total exposure, Explore Scientific ED102 102mm f/7 refractor, ZWO ASI294MC camera, dual narrow-band filter (Hα,[O III]), [S II] filter, iOptron CEM25P mount, Processed in Astro Pixel Processor and Lightroom.
Date: 2023-5-13,21,25, 6-14
Location: El sauce Observatory, Chile
Optics: R200ss,
Camera: ASI294MM-pro
Exposure: 6 panel mosaic
・P1 (L, R, G, B) = (164, 72, 68, 68)
・P2 (L, R, G, B) = (173, 70, 69, 69)
(gain 120, offset 5)
Processing: Pixinsight, AstropixelProcessor, Photoshop
Imaging the Western Veil Nebula in Cygnus in HA and 03 resulting in an HOO image.
200 minutes of O3
100 mins of HA.
4hrs imaging time all up
ASIi83MM at 0 degrees, gain 111
m-zero mount with rough PA
VdB 14 & 15 (left in the picture) are two very beautiful reflection nebulae, which also contain a few reddish emission components and belong to an even larger dust cloud in the inconspicuous constellation Camelopardalis. VdB 15 is the larger, lower area of the nebula and surrounds the star CE Cam, a variable supergiant. VdB 14, the upper part of the nebula, is located near the star CS Cam, which is also a supergiant. The distance to earth is around 3,000 lightyears.
The open star cluster Stock 23 can be found on the right in the picture and is also a nice object for visual observation. Its distance is estimated at 1,240 lightyears and it is surrounded by several spectacular dark clouds. It is embedded in the large but faint emission nebula SH2-202, which extends over the entire right half of the picture.
Equipment:
Celestron RASA 8 f/2
Celestron Motorfocuser
EQ6-R Pro
ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)
RGB (no filter): 300 × 30″ (2h 30′)
RGB (IDAS LPS-D3 Filter): 260 × 120″ (8h 40′)
TS 2600 MP Mono (Gain 100, Offset 50, -10°)
Ha: (Baader H-alpha Highspeed Ultra-Narrowband 3.5nm Filter): 130 x 60 (2h 10')
Total: 13h 20'
Flats, Darkflats, Dithering
N.I.N.A., Guiding with ZWO ASI 120MM and PHD2
Astropixelprocessor, Photoshop, Pixinsight
Date: November 23, December 8 & 15, 2022
Location: Hannover, Germany (Bortle 5-6)
The Lagoon Nebula is one of the brightest nebulae in the night sky - bright enough for some people to see with the naked eye as a hazy patch in the sky. Around 5,000 light years from earth, this giant interstellar cloud is a nursery for young stars. These baby stars heat up the nebula gas so much that it emits light - light we can see. We may not see much with our naked eye but with a little help and a little patience, we can see a whole lot more.
Calibrated images of the Lagoon Nebula were provided by iTelescope.net. In addition to providing access to their telescopes, iTelescope.net provides subscribing members with a combination of premium image sets (with the rights to use & post them) and webinars that show how to process them. Itelescope.net captured the images using their T71 telescope based in the dark skies of Chile. I handled the post-processing side with Astro Pixel Processor, Photoshop, Star Xterminator, and Topaz Sharpen and DeNoise AI.
The Theta Musca Supernova Remnanant-G304.4-3.1
this is a recently discovered SNR (first imaged in high resolution just over a year ago by Bray Falls)
The object is huge and too big for the small sensor of my imaging camera, so I will have to re-attempt with possibly my RedCat51 at some future point in time.
Equipment
HEQ5/ASIAIR/Sharpstar Z4/Antlia 3 nm Ha Filter/Optolong 3nm OIII filter/ZWO ASI533MM Pro
Integration
16 hours in OIII (10 minute subs)
4 hours in Ha ( 10 minute subs)
Location
Bortle 6
imaged over multiple nights in July 2024
Processing notes
Ha and OIII data stacked in AstroPixelProcessor.
Ha and OII integrations registered in APP.
Processed in PixInsight
Dynamic Crop
Graxpert for gradient removal (for some reason GraXpert did a better job IMHO than my usual goto ADBE )
BlurX-correct
BlurX default
Starnet++
SetiAstro NB to RGB script to convert Ha and OII star masks to star layer -only mild stretch (4.0) applied
NoiseX on starless images
GHS for starless layer. Had to experiment to not overstretch the data especially Ha and swamp the image with ha signal
Linear Fit
HOO image constructed with PixelMath
Red- Ha
Green- 0.2 Ha +0.8 OIII
Blue-OIII
mild curves transformation
star layer added using Pixelmath
Narrowband Normalisation
BlurX
NoiseX
levels adjustment in Photoshop CS
Comment
Images published on the web tend to show the oxygen areas in an electric blue and the Ha areas in a hue closer to pink
while it was possible to achieve this colour palette by using adjustment layers (Hue/Saturation, colourise) I have chosen to go with the image more or less as it emerged from PixInsight
William Optics GT 71 with 0.8 field flattener.
ASI 294 MC Pro one shot colour CMOS camera.
Calibrated in AstroPixel Processor.
60 minutes total integration time
Camera Temperature -10degrees, gain at 300.
A region of active star formation in the constellation Cygnus glowing in the light of hydrogen gas. On the left is NGC 7000, also known as the North America Nebula, and on the right is IC 5070, a.k.a. the Pelican Nebula.
This is a mosaic of seven tiles, taken with two different astro cameras on three nights in July and August. Explore Scientific 0.1m f/7 telescope, ZWO ASI 294MC (one-shot color) and ASI 2600MM (monochrome) cameras, UV/IR cut fillter, iOptron CEM25P mount, ASIAir controller, auto-guided. Processed in Astro Pixel Processor and Lightroom.
#astrophotography #deepsky region of active star formation in the constellation Cygnus glowing in the light of hydrogen gas. On the left is NGC 7000, also known as the North America Nebula, and on the right is IC 5070, a.k.a. the Pelican Nebula.
This is a mosaic of seven tiles, taken with two different astro cameras on three nights in July and August. Explore Scientific 0.1m f/7 telescope, ZWO ASI 294MC (one-shot color) and ASI 2600MM (monochrome) cameras, UV/IR cut fillter, iOptron CEM25P mount, ASIAir controller, auto-guided. Processed in Astro Pixel Processor and Lightroom.
#astrophotography #deepsky
Very weak and identified in 1954 on photographic Plates as a Milkyway satellite.
Esprit 100 f5.5 APO/Qhy16200 CCD @-20C.
98x300 sec IDAS-LP2 filter.
Imaged on: 13,14,15&16 May, 2018.
Knight Observatory, Tomar
Messier 45, also known as the Seven Sisters or the Pleiades is an Open Cluster located in Taurus. It can easyly be seen in a starry autumn or winter night as a constellation of approx. five stars even with the naked eye.
Object: M 45 (Pleiades)
Optics: William Megrez 72ED F6 + Long Perng 0,6x Reducer
Mount: Sky-Watcher EQ6-R
Camera: ZWO ASI 183MM Pro @-20°C, Gain=53, Offset=10
Filter: ZWO EFW 7x36mm, ZWO 36mm Filters
Exposure: total ~7h, R 87x60sec, G 90x60sec, B 106x60sec, L 65x120sec, L (mixed from RGB), 200 Bias, 40 Darks, 60 Flats per channel
Date: 2018-11-16, 2018-11-17
Location: Schwaig
Capture: Sequence Generator Pro
Guiding: APM50 Image Master, ASI120MM, PHD2
Image Acquisition: Stephan Schurig
Image Processing: Stephan Schurig
AstroPixelProcessor 1.070: Calibration, Registration, Normalization, Integration, Channel Combination, Background Flattening & Calibration, Star Colors Correction, Auto Digital Development
Photoshop 20.0.1: Levels, Curves, Exposure (Offset, Exposure), Masked Nik Dfine 2 Denoise, Masked Dynamic (Dynamic, Saturation), Star Shrink, Masked Unsharp Masking, Masked HighPass Sharpening, Camera Raw Lens Correction (Distorsion, Chromatic Abberation), Cosmetic Background Repair
Comet ATLAS C/2019 Y4, discovered in December 2019, has been quickly increasing in brightness over the last few months, and many of us hope that trend will continue; past projections put it as reaching naked-eye brightness this April or May. However, it's brightness has recently plateaued around magnitude +8. That and an elongated nucleus suggest that it might be disintegrating.
It was likely about magnitude +8 when I photographed it last night, April 9th, near Star 42 Camelopardalis. I'm not sure what the faint nebulosity is to the lower left of the comet: either Dark Nebula HSVMT 25, integrated flux nebula (IFN), or it's simply an artifact. Galaxy NGC 2366 is also apparent in the upper right corner.
Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 50 x 30 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker (used comet stacking mode so stars and comet were stacked separately and then combined), editing with Astro Pixel Processor and GIMP, taken in the 30 minute-window between astronomic dusk and the rise of the 93% illuminated moon on April 9, 2020 under Bortle 3/4 skies.
M101 is about 25 million lightyears away from us. Its spiral arms show several "knots" that are regions of star forming.
101 x 180s @ ISO 800
Pentax K3ii and TS 130/910 APO.
This is the version stacked with AstroPixelProcessor.
Comet Leonard increased in brightness by more than 2 magnitudes and within a day faded and then faded further in the next day.
COBS (Comet OBSveration database) contributions indicates that C/2021 Leonard had a significant outburst just prior to its recovery in the evening sky on December 15/16 2021. The comet flared to mag 3.5 and then quickly subsided to mag 5 by December 18. These three images were captured with a Vixen VSD 100 mm telescope and a Nikon Z7II camera mounted on a Vixen SXP. About 2.5 minutes of images were acquired with subs and stacked with AstroPixelProcessor and finished with Photoshop. With clouds and haze in Tucson and Comet Leonard gaining altitude each day the differences shown are not normalized and are a qualitative product of the captures. On December 17 there was considerable haze that like reddened the coma shown.
The photos were converted to BW, stretched, and then a inverted to show the coma stretched greatly to show the faint coma. The outburst on Dec 15/16 ejected much coma material. This then appears to be observed as an extended coma trail 24 h later in the middle image on December 17, and without the continuing outburst on December 18th the coma is much smaller and compact in the faded comet.
This color image was made with the Mono CCD camera and R, G and B filters. Because the Comet is moving fast all the 103 images made with the three different filters had been shifted and had to be re-aligned before stacking. A second stack was made to only show the stars. The 2 stacks have been combined and processed further.
AstroPixelProcessor: Calibration of the sub frames with Bias frames, Dark frames, flat frames and the Bad Pixel Map.
Pixinsight: StarAlignment, CometAlignment, Separate ImageIntegration for R, G, B for stars and comet. BackgroundCorrection, Histogramtransformation (Black point clipping for starcombined image), Pixelmath combination for starimage and Comet image, ,Platesolver script, Arcsinh Stretch, histogram stretch, curves adjustments, Image annotation script, annotations,
Knight Observatory, Tomar, Portugal
The 'W' of Cassiopeia has always been one of my favorite constellations - maybe because I could always spot it as a kid.
This extent contains the middle three stars of the 'W' - Ruchbah (blue, bottom), Navi (blue, upper left), and Shedar (yellow, upper right). The center star of the 'W', Navi, illuminates the Gamma Cassiopeiae Nebulae (IC 59 and IC 63) a combination of red emission and blue reflection nebulae. The red/pink emission nebula below Shedar is the Pacman Nebula (IC 11 or NGC 281). And to the right of Ruchbah is the Owl or E.T. Cluster (NGC 457); the owl or E.T. is upside down here.
Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 35 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken on Oct. 23, 2019 under Bortle 3/4 skies and thin cloud cover.
Thin cloud cover was present most of the time that I imaged and acted as a diffusion filter for the larger stars. I kind of like this effect that emphasizes big stars, especially for this extent where the nebulae are fairly small for a focal length of 135mm, although I'd always prefer clear skies to a natural diffusion filter. Even though my tracking was spot-on (good balance, polar alignment, and a charged SkyTracker), I wasn't able to use about half of my subs because of clouds.
Equipo: Star Adventurer - Canon 6D - Sigma 70/300 APO
50 lights - 19 darks - 100 bias
60s - f/6,3 - ISO 3200 - 190mm - 4000K
Procesado: AstroPixelProcessor - Lightroom
IC443, the Jellyfish Nebula on the right is the remnant of a Supernova that occured around 10.000 years ago. A (the?) resulting rapidly spinning Neutron star or pulsar CXOU J061705.3+222127 is found today at the indicated location. The nebula to the left is IC444. This image in H Alpha light was made with an Esprit100 f5.5 refractor/ QHY16200 CCD camera (cooled to -20C). 35 x 15 minutes (8.8 hrs), integrated with Astro Pixel processor and processed further with Pixinsight. Image dates: 6,7,9 and 10 November 2017.
Info about the Pulsar: www.space.com/31442-jellyfish-nebula-mysterious-pulsar-im...
Knight Observatory, Tomar
This is the wonderful globular cluster M 3 in Canes Venatici. It‘s one of the largest and brightest, and is made up of around 500,000 stars. It is estimated to be 11.4 billion years old and 32,600 light-years away from Earth. I had already photographed this cluster for about 3 hours last year and was able to add another 2.5 hours this time, which made the faint stars in the outer regions of the cluster more visible. Well, M 13 in Hercules is even more spectacular, but I think M 3 is worth to take a closer look at it. Hope you like it!
Equipment used:
Skywatcher 200/1000 @ 950mm f/5
EQ6-R Pro
ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)
RGB (no filter): 658 x 30" (5h 29‘)
N.I.N.A., Guiding: ZWO ASI 120 MM & PHD2
Bortle 5
Astropixelprocessor, Photoshop, Pixinsight
One of the objects I was able to photograph last night with some unusually clear sky after many cloudy nights, despite it being quite near the horizon. This is one of the more colorful regions of the Milky Way, called the Rho Ophiuchi nebula after the bright star within the blue cloud near the top. The brighter red star near the bottom is the brightest star in the constellation Scorpius called Antares, the Heart of the Scorpion. Much of the region is filled with dust, reflecting the light of nearby stars as well as some gas, mostly hydrogen, glowing because it's energized by the nearby hot stars.
Tech: 12 300 sec. exposures, Nikon 80-200mm f/2.8 lens @200mm, ZWO ASI294MC camera, iOptron CEM25P mount, processed in Astro Pixel Processor and Adobe Lightroom.
This is an extremely difficult target for me as I live around 16 miles south of the UK's second largest airport London Gatwick, so battling light pollution from Gatwick and trying to bring out the faint dust is a huge challenge, but I like a challenge and I am extremely happy with the final result
RA: 21h07m03.75s
Dec: 67°15'14.40"
Constellation: Cepheus
Designation: NGC7023
Image Details: 201x150S at Gain 100
Darks: 101 Frames
Flats: 101 Frames
Bias: 101 Frames
Acquisition Dates: Oct. 23, 2020 , Nov. 15, 2020 , Nov. 18, 2020 , Nov. 19, 2020 , Dec. 12, 2020
Total Capture time: 8.4 Hours
Equipment Details:
Imaging Camera: ZWO ASI6200MC Pro 62mpx Full Frame OSC
Imaging Scope: SharpStar 15028HNT Hyperboloid Astrograph
Guide Camera: StarlightXpress Lodestar X2
Guide Scope: 365Astronomy 280mm Guide Scope
Mount: Sky-Watcher EQ8 Pro
Focuser: Primalucelab Sesto Senso V2
Filter: Optolong 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
This Rosette Nebula image is a stack of 19x15 minute H-Alpha images taken with Esprit 100 Refractor and QHY16200 CCD camera. The stack is part of a work in progress for a HaRGB image.
Image dates 10,11,12 and 13 November 2017.
Knight Observatory, Tomar
Sky-Watcher Quattro 150P f/3.5
Player One Uranus-C OSC (Offset:10 / Gain:100)
SkyTech LPRO MAX filter
54 x 60sec. subs (54 mins.)
Processed in Astro Pixel Processor (x2 drizzle), GraXpert and Affinity Photo
Galaxy IC342 can be found in a dusty region, 10 degrees from the Galactic Equator but that dust is not very bright. Almost all IC342 images show just the Galaxy, not the dust in the surrounding region. It was not my intention to image that dust, but when i made a luminance stack with all the 271 (300 second) subs i had, there it was....
The inverted image is annotated and i added surface brightness data for a couple of faint Galaxies. KK35 or PGC166077 with a surface brightness of 26.85 mag/arcsec² was thought to be a Dwarf Galaxy but it most likely is an outher region of IC342.
Esprit 100 Refractor/ QHY16200 CCD @-20C.
271x300 sec Luminance (22.6 hrs)
Calibrated/ stacked with AstroPixelProcessor, post-processed with Pixinsight.
Image dates:
15,16,17,18 November 2017, 2,3,4,5,7,8,9,10,11,12 January 2019.
Sky-Watcher Quattro 150P f/3.5
Altair Astro Hypercam 585C OSC (Offset:10 / Gain:190)
HDR mode on
60 x 120 sec. subs (2hrs.)
Processed in Astro Pixel Processor, StarNet, NoiseXTerminator and Affinity Photo
Approx 10 hours each of HA and OIII, taken in 5 minute subs.
AP 155EDFS refractor. ZWO ASI6200 mount.
Processed with AstroPixelProcessor and Photoshop.
M101 Pinwheel Galaxy
Equipment:
Celestron AVX
Baader Moon and Sky Glow with IR cut filter
ES ED 102 FCD 100 Scope
SSAG Cope and Camera
ZWO 183mc Pro
Pegasus Focus Cube
Software:
SGP Acquisition
Sharp Cap - Initial Focus and Polar Align
AstropixelProcessor for stacking and initial stretch
Finished in Photoshop
I'll have to look to see how much integration.
A pair of dark nebula in the Aquila constellation on a background of Milky Way consisting of countless stars of all magnitudes. This image shows 50438 stars.....
The annotated image (right) shows the deep red Mira variable RT Aql : www.aavso.org/vsx/index.php?view=detail.top&oid=1151
One distant Galaxy (PGC166630) is visible in this star rich field at 250 Million lightyear distance.
Esprit 100 refractor plus QHY16200 CCD camera on 10 Micron GM2000 mount in a Scopedome 2M. Software: Sequence Generator Pro, AstroPixelProcessor, Pixinsight.
Knight Observatory, Tomar.
Some astronomy images leave me wondering if I can actually find the object (named in the title) in the picture. Like finding objects in clouds in our daytime skies, objects in astronomy pictures are sometimes easy to find and sometimes not. Admittedly, my first view of images from this scene gave me a similar feeling - I guessed because of the thick field of stars. So in processing, I removed the stars and BAM! There were the dragons and the egg they were fighting over.
Calibrated images of the Fighting Dragons of Ara and the Dragon's Egg Nebula were provided by iTelescope.net. In addition to providing access to their telescopes, iTelescope.net provides subscribing members with a combination of premium image sets (with the rights to use & post them) and webinars that show how to process them. Itelescope.net captured the images using their T71 telescope based in the Rio Hurtado Valley, Chile. This was especially helpful because the Dragons of Ara are visible in the Southern Hemisphere where I live in Colorado. After capturing, I handled the post-processing side with Astro Pixel Processor, Photoshop, Star Xterminator, Topaz Sharpen and DeNoise AI.
An image in Ha RGB
Located between Hadar and Rigel Kentaurus, this nebula has recently become quite a favourite for astroimagers
Location : Bortle 6
Equipment
Sharpstar z4/Antlia 3 nm Ha filter/ Antlia Triband RGB filter/ZWO 533 Mm pro -for H-alpha /6/533 MC pro for RGB colour/ASIAIR/HEQ5/ASIAIR
Data
4 hours in RGB (5 minute subs)
8 hours in Ha (10 minute subs)
20 minutes in RGB ( 60 second subs) -for stars
Processing
stacked in AstroPixelProcessor, processed in PixInsight
Processing Notes
Ha and RGB separately
Stack
register Ha, RGB long and RGB short stacks
Dynamic Crop
GraXpert
Blur X -correction
Image Solver
SPCC
Starnet++
Nebula
BlurX
NoiseX
GHS
NoiseX
Dark Structure Enhance ( for Ha only)
Curves Transformation
Stars
SetiAstro star stretch script
HaRGB image constructed using Foraxx utility in PI :
Synthetic OIII constructed as follows:
RGB image split into r,g and b
OIII=( 0,55*G +0.55*B)- 0.1*R
on the assumption that some red leaks into Blue and Green, 10 % is just a guess
Starless image in Foraxx constructed using Paulyman's script in PI
Curves Transformation after applying a luminance mask
Stars and starless combined with Pixelmath
Minor tweaking including a final crop - in Photoshop CS6
See also Starless version in Ha
NGC 7822 is a beautiful emission nebula in Cepheus, well-known and popular for its shape and the dark nebulae running through it.
Thanks to good weather three weeks ago, I was able to collect 17.5 hours of data at f/2 for this SHO version. When it comes to color, I like the classic processing in the style of the Hubble Telescope, but this slightly more modern color scheme also has its charm.
Celestron RASA 8
Celestron Motorfocus
EQ6-R Pro
TS 2600 MP (Gain 100, Offset 200, -10°)
Baader H-Alpha Highspeed 3.5nm: 178 × 120″ (5h 56′)
Baader O-III Highspeed 4nm: 174 ×120″ (5h 48′)
Baader S-II Highspeed 4nm: 176 × 120″ (5h 52′)
Total: 17h 36′
Bortle 5 (19.50 SQM)
N.I.N.A., Guiding with ZWO ASI 120MM and PHD2
Astropixelprocessor, Photoshop, Pixinsight
24-07-2020, 9 x 30 seconds Luminance, Esprit 100 telescope/QHY16200 CCD @-20C. Calibrated subs in AstroPixelProcessor, further processing in Pixinsight: Staralignment, Cometalignment, ImageIntegration, DynamicBackgroundExtraction, MaskedStretch, Curves, HDRMultiscaletransform
I managed to catch a nova last night! That's an unusual astronomical event in which a star brightens tremendously in a short time. This one, known as Nova Cas 2021 was discovered in the constellation Cassiopeia just a few days ago and is now bright enough to see in binoculars and photograph with modest equipment. It also shares the view with some other interesting objects: an open cluster of stars, Messier 52 (M52) and a nice star-forming nebula, NGC 7635, known as the Bubble Nebula for the interstellar cavity being blown by a bright, young star.
By studying spectra (the distribution of the light across colors/wavelengths) and the light curve (the change in brightness over time), astrophysicists have determined that Nova Cas is a "classical nova" in which one of the stars in a close binary system transfers some of its mass to its white dwarf star companion, which eventually results in a tremendous nuclear explosion that we can see across the galaxy. Here's an article from Astronomy Now with more information: astronomynow.com/.../new-nova-in-cassiopeia.../.
Tech: ZWO ASI294MC Pro camera, Nikon 200-500mm f/5.6 lens @500mm, 15x60sec. exposures, processed in Astro Pixel Processor and Lightroom.
#astrophotography #novacas2021
NGC2237, the Rosette nebula
Reprocess of data from a few months ago using new software.
Object Information
* Designation : NGC2237, NGC 2238, NGC2239, NGC 2244, NGC 2246, Sh 2-275
* Type : Emission Nebula
* Magnitude : 9.0
* Location (J2000.0) : RA 6h 30m 28s / DEC +5° 03m 00"
* Approximate discance : 1600 parsecs / 5219 lightyears
Hardware
* Mount : Celestron CGX
* Imaging Scope : Skywatcher Explorer 150PDS (6" f/5)
* Imaging Camera : Canon EOS 6D Mark II
* Guide Scope : 50mm f/4 refractor
* Guide Camera : ZWO ASI 120MM
Exposures
* Single Exposure Length : 240sec
* ISO : 1600
* Light : 30x
* Darks : 7x
* Flats : ---
* Bias : 25x
* Total Integration time : 2h00m
* Capture date : 2018-03-19
Capture Software
* APT - Astro Photography Tool
* PHD2 Guiding
Processing Software
* Astro Pixel Processor
* Adobe Photoshop
* Astronomy Tools Action Set
Dati: 34 x 300 sec a gain 5 e offset 25 a -10° c + 70 dark + 30 flat e darkflat
Filtro: Astronomik UV/IR Block L2
Montatura: EQ6 pro
Ottica: Takahashi FSQ106
Sensore: QHY168C
Cam guida e tele: magzero mz5-m su Scopos 62/520
Software acquisizione: nina e phd2
Software sviluppo: AstroPixelProcessor e Photoshop
Temperatura esterna: 18.5 ° C - Umidità 70%